350 Tbi Stumbles When Warm

All this with no result. next problem me and momma like to get out and just more or less idle around hardly ever get out of 2nd gear then when you do get ready to speed up it literally will not take the gas itll start jumping and bucking we. 88 F-350 with EFI 460 Starting/Running Problems - posted in 80-96 Ford Truck Tech Support: I have a 1988 Ford F-350 with an EFI 460 engine. i with a 600 holley. 9k/9ct rose gold baby/child ID BRACELET: rect, car, satin cord, various colours, free engraving in the Bangles & Bracelets category for sale in Johannesburg (ID:431520969). Hot/Cold Air Box Thermostat and AMM. My reasoning for looking at the larger TBI was started when I read the 350 TBI setup is only capable of feeding up to 275 HP. 7L Chevy TBI. Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Assembly. When an engine transitions from one A/F mixture to another, there is an interruption in the power. But when it warmed up the darn hesitation came back. Checked the coil and both resistance values were within spec both cold and hot just after shutdown. The Chevy crate engine comes in the higher cost four bolt main option or the lower cost 2 bolt main version. 350 small block tbi crank no start I recently bought an 89 k20 with a small block tbi in it and replaced the alt and battery, everything seemed to be working mint. for future 350 TBI fuel pump searches I found the following : +Carter P5001 / NAPA P5001 / Holley HLY-12-927 This is a self priming pump. GM 350 Crate Motor-Stock vs Upgrade The first thing you should notice from the graph is the 190-hp GM Crate motor made a lot more than 190 hp. The injectors look like the are spraying good. While driving if you. idle is still fine parked. Fuel filter has been replaced and TBI was rebuilt last April but it sort of used to do something like this when it was like 40 degrees or below. (rebuilt 350 in an 82 1/2 ton) each engine is. 18436572 firing order. I have spark, but it seems like it is advanced or retarded. I am trying to tune out a hesitation in the off idle part throttle range. It will start, run about 2 seconds, then dies. Having the timing advanced or retarded will cause problems, including hesitation, bogging or even misfire. It started right up! But it ran at a high idle, around 1500-2000 RPM. Re: Mercruiser 350 MAG MPI -02 need full trottle to start when warm You have a stuck injector. Drove home and tried it a few more times in my driveway. Ok guys, this isn't my first rodeo, and I'm truly stumped here. and when i keep my foot in the pedal it doesnt clear up engine is mild 350 with h. I had it happen on my '94 GMC Sierra 3500 Xcab with a 350 SBC. '89 Suburban, 350 TBI, 700R4, TBI Spacer, TC speedo regear, 4. when my blazer did this it was a o2 sensor it fixed it no problem i hate computer driven cars lol. 3L in its history, though. I installed the PCV valve and started the engine and warmed it up and the problem was still there, so I started checking things over making sure all the rubber hoses fit tightly. I haven't torn apart the distrib because I'm swapping out the front shocks and replacing a torn CV boot. It drives beautifully, throttle response is crisp with not even a hint of hesitation. This isn't in my MG, but, you guys have such vast knowledge and am truly stumped. I personally think it is bad gas ie,water in gas & iam assuming that the 83 oct, is a type-o. I can dump gas down the intake and it still will not start. Find our best fitting throttle body rebuild kit (tbi)s for your vehicle and enjoy free next day delivery or same day pickup at a store near you!. 1995 Chevy K1500 bad hesitation when warm only was created by game-tech. 7 TBI (3 year old Jasper engine - 20k miles). See our Intake manifolds - 350 320 318 Chevy Ford Marine Victor Aluminum. Having a problem with the engine. Re: Mercruiser 350 MAG MPI -02 need full trottle to start when warm You have a stuck injector. A Very Special Ford GT40. This produces a total displacement of 383 cubic inches (thus the name 383). i take these off the later 1993-96 gmc vans. It has the automatic 3-speed with overdrive. Truck had been overheated several months prior and I assume it was HOT. LS460 and LS600h hesitation on acceleration and/or P2119 CARspec is hearing increased complaints of hesitation when accelerating from Lexus LS460 and LS600h owners as the cars age. The J-Body Organization, j-body. The problem I'm having is a single engine stumble durring hard or soft acceleration the first time the truck is moved for the day in first gear. My 1995 Chevrolet Silverado truck had a hesitation problem, which we were able to fix by replacing some parts. What gives. There is no SES on and the light is functional. Like i said take the air cleaner off and remove the fuel line on the left side (passenger side) and start the engine, jump up on the truck and see how much fuel is coming out of the port on the tbi. IGNITION TIMING Most engines (except diesels) use an electric spark to ignite a fuel/air mixture. If your chevy gm tbi is running rich this will help you trouble shoot it and fix it Don't Forget to Subscribe today for more fact or fiction, diy ,how to car repair,spooky or funny videos uploaded. When you accelerate you should have absolutely no hesitation and your car should begin to move immediately. I installed a new fuel pump, dist cap, rotor, wires, plugs, crank sensor, coil, ignition module, swapped the MAP, cleaned the MAF, new filters, checked just about everything and on hot sunny days especially when stuck in traffic, it stalls. It has a lean code that comes up with the random misfire. the stock 2-barrel (other than weight savings, cosmetic, desire to spend seemingly senseless $$ on a 30 year old vehicle)?. I buy cars that need work and fix them up to sell them on for a profit. much worse at lower, or speed maintenance throttle. 6 mph -- just. Generic TBI Fuel Injection Block Diagram & Acronyms Individual Components and Their Function We have covered the block diagram and acronyms and are now ready to take a look at the function of the individual components, and some general information about them, and how to procure them. Get the job done with the right part, at the right price. The contact owns a 2005 Ford F-350 superduty. Related Documents & Media 2002 Ford E-350 Econoline Related Documents & Media 2002 Ford E-350 Econoline To view the related documents & media you must login to iATN (or join iATN ) as a premium member. Problem: With the engine running at idle, always when cold, intermittent when hot. 7L TBI and when I replaced the starter, I found that the knock sensor's ceramic fitting had broken and the wire came off- it was sluggish, but it didn't knock excessively. The truck has 190K miles on it and runs fine other than a misfire. I checked for any wild wires, and shook the wires of my ignition, TBI Harness, and could not get it to stumble. idle is still fine parked. There are always questions posted about how to cure hard starting, hot or cold. Find our best fitting throttle body rebuild kit (tbi)s for your vehicle and enjoy free next day delivery or same day pickup at a store near you!. Initial Calibration of the TBI Disclaimer The author of this presentation assumes NO responsibility for information provided causing the owner to modify or alter their motorhome which shall result in problems or mishaps. Cold needs more fuel than warm. It will consistanly shut off when warm and shifting into gear. Unplug the tan/black wire, time the engine to ZERO degrees and reconnect the tan/black wire. Follow up with the fuel system choice, plumbing, regulators tank etc Finish. The Winchester Tri-State show organizers have been very good to us and tolerant of our hijinks The least we can do is abide by their request and to support their very worthy cause. By 1986 gasoline was about half the cost (adjusted for inflation) of what it was earlier in the decade and GM was scrambling to put the 350 back into cars and trucks. I have a 95 hoe 4x4 with the 350 TBI and on a quick throttle push it has like a 1-2 hesitation before it takes off when the engine is warm and the check engine light comes on. If the main jet doesn't solve it, try setting the accelerator pump (see below). 4L60E trans. I couldn't find a 5. Re: Miss when warm: 92 Sonoma S-15 with 92 TBI 5. when car is in park runs bitchen and rev it up no problems or stumbleing seems like only happens under a load. i have a tbi 350 out of a 90 suburban in my jeep. The older VQ would typically exhibit a long crank as a CMP sensor is failing, if not it might stumble and stall randomly but a code would/should be saved. with the brown wire disconnected, not -2 degrees like you have it. 1995 gmc sierra stumbles when accelerating Sign In i have a 5. Unless you live in a very cold climate I don't recommend replacing the cold/hot intake air valve and plumbing. I have a 1995 chevy k 1500 350 tbi it hesitates when trying to accelerate changed plugs wires cap and rotor it dose have aftermarket tbi and performance intake it dose it hot or cold thanks Posted by midget_85 on Sep 22, 2011. 5HP "Turbo Cool Platinum I/C" opposed twin wont start after its hot. Also after sudden acceleration it backfires more often than not. Discussion in 'Off the Topic Forum' started by struggle, Dec 26, 2013. The latter can often solve stumble and stall problems that occur at highway speeds or under acceleration. Lid from 350 GM pickup truck Any aircleaner lid from any carbureted or TBI chevy truck from 1968 to current allows for the use of a taller aircleaner element. 7 350, has 176,000 miles, the truck runs great except when at idle, both with it in gear and out of gear at idle, almost like its missing, but runs fine when above idle, I replaced the fuel pump about 800 miles ago because the truck would surge while driving, new pump all fine so I know this new problem cant be the pump, new fuel filter, air. If your chevy gm tbi is running rich this will help you trouble shoot it and fix it Don't Forget to Subscribe today for more fact or fiction, diy ,how to car repair,spooky or funny videos uploaded. Definitely no 4. Re: Stumble, Hesitation, Bucking, Hard to start, Stalling, Jan 04 2012, 7:32pm The lockup converter could not be unlocking, which would act like a manual transmission if you were slowing and not down shifting or not pushiong the clutch in. and back it up on the ramps then a flip is switched and it runs rough and stumbles. Now, I am here because I have a problem -- it is an '89 Chevy G20 (3/4 ton) conversion van with a 5. i have no clue fella's i was hoping u could tell me im at a loss here on this one. Briggs and Stratton 19. It has an edelbrock performer package (cam/intake/carb) it has a mechanical fuel pump. Troubleshooting Guide for Hard Starting Problems. 3 which is the same engine i have in the Z plus 2 cyl. #1 cylinder is closest to the radiator (not always the case on Fords). Now, I am here because I have a problem -- it is an '89 Chevy G20 (3/4 ton) conversion van with a 5. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. The voltage should look smooth with no voltage flat spots. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. 5-1 compression. It has a lean code that comes up with the random misfire. It's OK at steady speed, but not great. xr250r carburetor xr250r carburetor; ls1 valve train upgrade kit ls1 valve train upgrade kit; carburetor fuel line carburetor fuel line. Once up to speed, at a steady 35 MPH on the flat and level there is noticable surging (not as bad as before replacing the MAP vacuum link hose). IGNITION TIMING Most engines (except diesels) use an electric spark to ignite a fuel/air mixture. Edelbrock is the most respected name in performance. Works with any fuel injection really since most shops really can’t properly diagnose unless computer just tells them what is wrong and unfortunately with TBI that usually doesn’t happen. Similar symptoms can be caused by a weak fuel pump. Get a fuel pressure gauge, attach to fuel rail, turn the key to the on position to allow the fuel pump to prime and DO NOT START, once the fuel pump runs and the pressure comes up (1-2 seconds) the fuel pump shuts off. Drove home and tried it a few more times in my driveway. 1986 s10 2. have no info on these heavy trucks as we rarley work on [] is ,what should the fuel. The engine runs fine when cold but as it warms up it starts to "surge" at idle and when you come to a stop it acts like it wants to stall then it grabs. 350 with HEI and quadrajet, Stumble when full throttle Discussion in ' The Hokey Ass Message Board ' started by socal_wrench , Dec 24, 2005. There are always questions posted about how to cure hard starting, hot or cold. 7:1 AF mixture. 5 turns to clean up the plugs. Its a 1976 C10 with a 350 auto 2 wheel drive reg cab long bed. with the brown wire disconnected, not -2 degrees like you have it. The 02 sensor was reading lean and it was lazy to cycle, so I replaced it and the plugs, and it runs great now. roadmaster 350 TBI 118k miles. When engine hot on the highway, when second venturi of carb is opened the engine seems to die momentarily. 3 which is the same engine i have in the Z plus 2 cyl. By the time the engine reaches operating temp (fully warmed up), the IAC position should drop into the range of about 20-50 counts in park or neutral. 350 TBI roadmonster running rough when warm. #6) When I was running my old 74 mustang with a 289 with 351 w heads I had a 600 on it. I'll look at the egr myself. when car is in park runs bitchen and rev it up no problems or stumbleing seems like only happens under a load. The 02 sensor was reading lean and it was lazy to cycle, so I replaced it and the plugs, and it runs great now. 1995 gmc sierra stumbles when accelerating Sign In i have a 5. If the engine runs good at 3000-4000 rpm but stumbles elsewhere, the correct main jet is being used, and the problem lies somewhere else. most of you if you have a 350 and you go to a mild 350 upgrade will be fine with a stock 350 PCV valve. It had some similar issues. Oxygen sensors are among the most interesting and important sensors on your engine. Our Take on the 2016 Lexus RX 350 Wild styling draws attention to the 2016 Lexus RX 350, but uninspired handling, lackluster brake feel and a lack of innovative features won't win it many new friends. ) on an Edlebrock Performer 4-barrel manifold? Are there any advantages to running the TBI on a 4-barrel manifold vs. Get the job done with the right part, at the right price. 95 chevy 350 auto K&N stock type air filter, cheapie stainless exhaust that wasn't complete so part leaks after cat/muffler joint, otherwise stock. It's a carburated 1986 350 from a C20 van. Having a problem with the engine. I headed back down to the local pull-a-part looking for Chevy/GMC vans again as this seems to be the most prevalent source of GM TBI era bits for Chevy V8’s. Model 400 TBI The Cross Fire Injection albeit as short lived as it was, was considered to be "cutting edge" when it was introduced in the fall of 1981 for the 1982 model years. ill find out monday i hope im taking my truck to school and they have a snap on tools scan tool there and im gonna hook it to. My reasoning for looking at the larger TBI was started when I read the 350 TBI setup is only capable of feeding up to 275 HP. My truck (in sig) just developed a bad stumble on acceleration. The Chevy 350 in my buggy with TBI has the same hissing soundand I did have a stumble off idlebut my dad and I have done a bunch of work to it to get it to run better and now it doesn't stumble nearly as much. My 88 Chevy truck has a 5. 00 Add to cart #CA/JP258 – TBI KIT: JP1 Emission Legal Version CARB EO #D452 1981-86 CJ 4. Lid from 350 GM pickup truck Any aircleaner lid from any carbureted or TBI chevy truck from 1968 to current allows for the use of a taller aircleaner element. It's OK at steady speed, but not great. Fuel filter has been replaced and TBI was rebuilt last April but it sort of used to do something like this when it was like 40 degrees or below. The feeling is unmistakable. Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. 7L STG 3 443/465 LIFT CAMSHAFT LIFTERS TIMING GASKET KIT. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. 7 tbI I have replaced every sensor on motor had igniton timing redone. I have checked the pickup coil, it is 834 ohms. If you let off the gas it dies. In fact, the old O2 sensor was one of the first ever used to electronically modulate the ratio of fuel and air used by the engine -- in a time even before what we would recognize as fuel injection today even existed. 7L (350CI) Throttle Body Injected automatic with 126,000 miles. Questions and answers about how to wire up the electrical system on your rat rod. Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. The injector spray looks normal while it is doing the surging thing. Maybe a cracked/warped intake, Throttle Body, etc. Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Assembly. TBI - Traumatic Brain Injury. 7, is the same. with the brown wire disconnected, not -2 degrees like you have it. The surging has been greatly reduced while driving. If I try to crank it up right away it would catch but would immidiately die. A Very Special Ford GT40. Throttle Body Injection A TBI system is similar to a carburetor in that one or two injectors are located in a central throttle body that supplies fuel to the engine through the intake manifold. ignition system is all new & good--coil, cap, button, wires. but it runs great when accelerating or about 60mph and faster almost like nothing is wrong with it. Having experienced exactly what you are talking about they are very similar but slightly different. 1 mph faster! At those speeds, the smaller engine got better fuel economy than the larger one by. The TBI and the ECM are remanufactured the rest of the parts NEW Fuel pump NEW Small Cap Distributor (except the upgrade large cap distributor is a remanufactured with new ignition module and pickup coil) The adaptor plate is a custom CNC machined plate that is pocketed to draw off all 4 holes (barrels) on your intake manifold. I just feel like the car has electrical problems and that is what causes the hesitation. The feeling is unmistakable. 56 gears, 33" tires. The latter can often solve stumble and stall problems that occur at highway speeds or under acceleration. No idling issues, no hesitation, no outstanding issues (that I know of) I appreciate any suggestions you may. Its a 1976 C10 with a 350 auto 2 wheel drive reg cab long bed. (I haven't gotten the fast idle/choke set up properly yet). 7L Hesitation, Cuts out, Misfire Posted to GM Driveability on 3/7/2009 23 Replies Thanks for taking the time to read this,your input is appreciated. The two basic types of electronic fuel injection (EFI) in use today are Throttle Body Injection (TBI) and Multi-Point Injection (MPI). 92 Chevy 350 TBI idle problems I have a 1992 Chevrolet K2500 350 tbi that idles high about 1200 to 1500 rpm sometime's will idle about 800 rpm. What would cause TBI engine to sputter, hesitate, skip and misfire/backfire Burb is 91 w/ TBI 350 and 4L80E. I checked the vacuum lines ,everything seems alright. The TPS on a TBI engine is not adjustable. There was a lot of gunk in the line for the PCV valve but everything else looked pretty good. The truck has full power while driving. I personally think it is bad gas ie,water in gas & iam assuming that the 83 oct, is a type-o. I got a 1990 Cheyenne with TBI 350. My fiancé' bought a 1994 Chevy 3/4 ton 4×4, 5. 0L Performance Fuel Injection Systems Complete stand alone fuel injection system kit * This is a complete fuel injection system kit. i own a 1991 blazer with a tbi 4. 7L 350, TBI, Auto, 220Kmiles Its been a great truck, for the most part it runs and drives great! but at low idle or low rpm's it missis,sputters,surges and if im just barely giving it any gas it almost wants to stall out. 7 tbi, it stumbles when first taking off but is fine when warmed up whats up? I replaced fuel filter, plugs, and plug wires, it is fine when it is warmed up but check eng light comes on thencould it be a bad fuel pump, or injector?. 6 mph -- just. Hello, I have a 95 GMC Sierra 1500 4x4 with the 5. i'm trying to figure out what's causing the surging and stumbling. The two basic types of electronic fuel injection (EFI) in use today are Throttle Body Injection (TBI) and Multi-Point Injection (MPI). 68 mpg for the 5. TBI - Traumatic Brain Injury. It started right up! But it ran at a high idle, around 1500-2000 RPM. Our Maverick 350 small block is a head turner. Maybe a cracked/warped intake, Throttle Body, etc. 0-liter engine of the lot came in the form of the GME T4 with 280 PS (276 hp) and 470 Nm (346 lb-ft) of torque. 8 and it happens only in the 1300 - 1400 RPMs, and there is a drop of 50-100 RPMs when it happens, and it resumes up quickly after that. Soap box: Electronic pulsed fuel injections systems are complex and are not a topic for back-yard mechanics. i need to REALLY rev it and ride the clutch for it to break its inertia and build momentum. Can you replace a 350 engine in a 1995 Chevy z71 with any 350 Chevy engine? 89 to 99, 5. Visualize vacationing with a hot is and also rehab graphics that could very well spring to mind Drug Rehab Center enjoying rehab expanse of orange normal water before you, loafing about on bright seashores and installing having a take in in hand on balmy times with songs participating in without anyone's knowledge. Generic TBI Fuel Injection Block Diagram & Acronyms Individual Components and Their Function We have covered the block diagram and acronyms and are now ready to take a look at the function of the individual components, and some general information about them, and how to procure them. I got this hesitation while accelerating that has got me stumped, its been doing this for almost a year now, and trying to fix it. Lid from 350 GM pickup truck Any aircleaner lid from any carbureted or TBI chevy truck from 1968 to current allows for the use of a taller aircleaner element. If I try to crank it up right away it would catch but would immidiately die. I removed the crank sensor, placed it in a pan of hot water and hooked up my DVOM to watch the sensor's resistance as it warmed up. I've had a TBI 350 before, but it always ran perfectly, so I'm not too up on how to troubleshoot these. Rehabs That Accept Medicaid Mentioned rehab tip on rehab iceberg for exercises over rehab game if you publication a rehab sport of golf package deal in Charleston. 1990 GMC C7000 Topkick C7H042 7. 7 tbI I have replaced every sensor on motor had igniton timing redone. For Persons with Acquired Traumatic Brain Injuries (TBI) Background The TBI Waiver was prepared by the Division of Medical Assistance & Health Services (DMAHS) in response to the Omnibus Budget Reconciliation Act of 1981, Section 2176, Public Law 97-35, and to amendments under Public Law 99-509. The problem I'm having is a single engine stumble durring hard or soft acceleration the first time the truck is moved for the day in first gear. 350/SBC Runs rough when warm - Need help Drivetrain & Performance 350/SBC Runs rough when warm - Need help - Chevy Nova Forum Steve's Nova Site is an automotive enthusiast website dedicated to the 1962 - 1979 Chevrolet Nova, Chevy II and Acadian automobiles. I have drained out the stale gas and chemically cleaned the fuel supply from the tank to through the injectors. Home-Cusimax Double Hot Stainless Steel Portable Burners, 1800 Watt Countertop Plate, oudxvx6211-best price - www. Follow along as HOT ROD buys the parts that matter for power and builds the cheapest small-block Chevy you can afford for only $2,613 and makes 391HP on a budget - Hot Rod Magazine. 350 tbi 4x4 Sunurban engine. i have a tbi 350 out of a 90 suburban in my jeep. System is going lean, and after 20-30 seconds of running lean, then goes into open loop forever. Questions and Answers about old school power plants including Flatheads and Hemis plus the trannies that bolt to them. You may have to register before you can post: click the register link above to proceed. Truck needs feathering of the gas to keep running on a cold start (warm start okay). I recently completed putting a stock TBI setup into my carb'ed '87 350. I have an idea, but I'd like to poll the group. com When I installed my 1991 TBI-350 motor, I eliminated a few sensors but did keep most. they attached a fuel pressure gauge on it thinking it might be the fuel pump that they put in. (I haven't gotten the fast idle/choke set up properly yet). vacuum is fine-18in steady. 0L Performance Fuel Injection Systems Complete stand alone fuel injection system kit * This is a complete fuel injection system kit. I have decided to create a page on trouble shooting TBI. Now, I am here because I have a problem -- it is an '89 Chevy G20 (3/4 ton) conversion van with a 5. GM 350 Crate Motor-Stock vs Upgrade The first thing you should notice from the graph is the 190-hp GM Crate motor made a lot more than 190 hp. Re: 305 to 350 TBI swap Well, I just got the 350 injectors installed in the truck (still with 305 ECU and ESC and knock sensor). -flat tappet camshaft and lifters with adjustable timing chain set; full gasket s. much worse at lower, or speed maintenance throttle. Although Camaro owners could opted out and get a higher output 5. Turning them in leans it out: try 1. TBI 350 hesitates bad when cold. The speed (distance) sensor - see Ed Hennessy's notes below. the reason i say this is, there is an flap inside the snorkel, that is suppose to close at cold engine temps, so that the tbi gets warm air from your exhaust manifold, and as your engine warms up, the flap opens also not sure if you have this on this truck, but worth checking. After examining the flywheel teeth, and gapping the plugs to the recommended manufacture gap, (they werent when we pulled them), we got a new starter installed. I've taken the time to summarize the information provided in the workshop manual. To check for system air leaks, use a spray bottle of soapy water. Just within the last month, it has started to hesitate off the line when cold -- then runs ok when it warms and then it st. I have a 98 Blazer that has plagued me for months on end. Cold needs more fuel than warm. No black smoke, 02 is reading nicely, it fires up when warm, and has good power again. #6) When I was running my old 74 mustang with a 289 with 351 w heads I had a 600 on it. 0L engine compared to 3. Includes plug for the driver side runner, and for the rear of the fuel rail. 56 gears, 33" tires. 18436572 firing order. The slump had gone away. Once up to speed, at a steady 35 MPH on the flat and level there is noticable surging (not as bad as before replacing the MAP vacuum link hose). tbi 350 idleing rough and cutting out under load. I have a 91 Silverado K1500 4x4, 5. Having experienced exactly what you are talking about they are very similar but slightly different. engine itself is new-last week. Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. He changed the plugs, wires, distributor, cap, rotor, fuel1 filter, and computer. After a while the engine will "stumble" and cut off. Maybe a cracked/warped intake, Throttle Body, etc. Call 504-599-5658 for. i had brought it in and the found that the tach was shorted out in the dash, from what i was told each gauge has its own dash modual in it. Price Highest. The three public lots are operated by Standard Parking. System is going lean, and after 20-30 seconds of running lean, then goes into open loop forever. 88 F-350 with EFI 460 Starting/Running Problems - posted in 80-96 Ford Truck Tech Support: I have a 1988 Ford F-350 with an EFI 460 engine. The 265 cu in (4. 90 suburban, 5. It fires right back up very easily. it turns over for a few seconds, then has a fluctuating idle until warm, once put in gear the idle speed lowers (no tach so not sure on rpms) and taking off from a stop it bogs out, stalls, sputters etc. Now, I am here because I have a problem -- it is an '89 Chevy G20 (3/4 ton) conversion van with a 5. im not sure if its worth building up or just get a new engine for the truck. It regulates out 9-22psi. If you slowly and smoothly push the accelerator down it revs up fine with no hesitation. 1989 Chevrolet C1500 Cheyenne 5. 3L in its history, though. 7L) engines. TBI to Carburetor Conversion on a Chevrolet by Richard Rowe While it works fine for stock applications, the fact is that General Motors' Throttle Body Injection (TBI) system is a nightmare for modified engines. Sounds fuel or vacuum leak related to me. Safety Features; Automatic Locking Retractors; Crash Sensor; Crumple Zones; Driver Airbag With Dual Stage Deployment; Front and Rear 3-Point Seatbelts; Front Seatbelt Height Adjus. i have a chevy 350 5. This will provide gains until the rpm at which the neck becomes the greatest restriction. I would assume that since you have aluminum heads that you also put in a higher lift cam than your stock motor had. Fuel filter has been replaced and TBI was rebuilt last April but it sort of used to do something like this when it was like 40 degrees or below. 1993 Chevy K1500 5. The injector spray looks normal while it is doing the surging thing. Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Comics from around the Web. Chevy 350 Engines. You can use a late 80’s or early 90’s GM TBI definition. I've taken the time to summarize the information provided in the workshop manual. The 02 sensor was reading lean and it was lazy to cycle, so I replaced it and the plugs, and it runs great now. It's OK at steady speed, but not great. and i disconected the hose from the egr valve. Also after sudden acceleration it backfires more often than not. It will consistanly shut off when warm and shifting into gear. This will provide gains until the rpm at which the neck becomes the greatest restriction. '91 Chevy 350 TBI surging at idle and stumbling at speed Howdy - My father in law's '91 Chevy was running poorly, so we put new plugs, wires, cap and rotor on it, and it's running better, but it it still surging at idle. it idles rough and acts like its running really rich, then when you take it out to drive it, as soon as you step on it to put a load on, it cuts out and backfires. Best Fuel Pressure Tester Update 1 Day Ago. The 8-pin module has two pins for the distributor pickup coil, P and N, a connection for power, "+" (hot in START and ON), a negative coil connector, "C", a ground, and four wires that connect to the ECM. 9k/9ct rose gold baby/child ID BRACELET: rect, car, satin cord, various colours, free engraving in the Bangles & Bracelets category for sale in Johannesburg (ID:431520969). When engine hot on the highway, when second venturi of carb is opened the engine seems to die momentarily. I have an 88 350 tbi that stalls after the engine has warmed up. It runs awful until up to operating temp and still lacks power then. Or Call to speak with a DriveTrain Genius. 3 which is the same engine i have in the Z plus 2 cyl. It was simple to work on and reliable. Cold needs more fuel than warm. Truck had been overheated several months prior and I assume it was HOT. not sure what else it could be unless its the injector which if i remember right it very pricey for the vortec engine. When I push the gas while it is in park, the RPMs increase like normal with no hesitation. I rebuilt the fuel pressure regulator on the TBI, problem still there. This electric spark has to happen at exactly the right time or the engine will not run properly. It fires right back up very easily. So I have an 87 Silverado half ton. With the Maverick, you're adding a little more oomfph and fun while enjoying a nice cruise on your day off or a long road trip to get away. Overheating can be caused by a low coolant level, a slipping fan clutch, too small a fan, too hot a thermostat, a bad water pump, or even a missing fan shroud. When it acts up, it feels like it wants to die out when I first start it, and after a minute or so letting it warm up, it goes away. This isn't in my MG, but, you guys have such vast knowledge and am truly stumped. There should be a decent amount of fuel streaming out, if not, you have a pressure problem. Truck needs feathering of the gas to keep running on a cold start (warm start okay).