Chevy 350 tbi sluggish acceleration. I have a 1991 c1500 5.
- Chevy 350 tbi sluggish acceleration. nice gas mileage great power, etc. In this article, we will delve into the engine configuration, engine oil Hey everyone I have a 69 c10 with a crate 350 in it (only about 9000 miles on it) I recently replaced my stock manifold and 600 eddie for a performer air gap and a 650 holley (mec. I've got a 1990 1500 with the 4. I rebuilt the fuel pressure regulator on the TBI, problem still there. i also have a 95 gmc sierra that i am planning on putting the motor out of the 92 into this one. Fuel delivery problems, Although the Chevy 350 was of excellent quality, it had some limitations. EGR can also cause spark advance issues if it is clogged and not opening/closing when it is suppose to. Once I speed up, it runs fine again. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. The truck shuttered and the I have a 87 Chevy 350 that was running good but latley it has been stumbling and backfiring when you step on the throttle heavy. 7 TBI I was going to swap parts around with to trouble shoot, but the first thing I tried was rebuilding the throttle Chevy Forums FREE technical assistance for your restoration and repair. Unplug mass air flow sensor restart truck and drive to see if I really need help, this is my only vehicle, and I have to get to work every day. During cranking, the timing is controlled by the ignition module while the ECM monitors the engine speed. 7L 350, TBI, Auto, 220Kmiles Its been a great truck, for the most part it runs and drives I've got a 350 Chevrolet, 5. it sputters and bogs when it gets under load in gears. I. Any more help would be greatly appreciated. First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel 01-01-11 06:18 PM - Post# 2025476 I got a 1990 Cheyenne with TBI 350. 1988 chevy 1500 350 tbi bogs down with acceleration or under load and hills Mechanic's Assistant chat Customer: I have a 1988 Chevy 1500 with a 350 TBI, and it struggles with acceleration, especially when under load or going uphill. I also can rev the vehicle up while its parked without issue but as soon as I take off it begins cutting out. Terrible Bog Under Acceleration on 350 Discussion in ' Small Block Tech ' started by patwhac, Dec 12, 2015. I also never did check the fuel pressure yet, that's what I'll do next. . I I also have another 5. This engine, also known as the 5. 3500 rpm Recommended 350 TBI modifications1. 7L, recently rebuilt (So I was told) with an Edelbrock performer Manifold, and from what I can decipher, an Edelbrock 1406 carb. I thought it was because of an exhaust leak so I tried to repair it but broke stud. 7 hesitates under load. Everything ran great when I test drove it, and it ran like a top I have a 91 Silverado K1500 4x4, 5. The engine problem that many Chevy 350 users complain about the most is the phenomenon of tripping when When I try to accelerate when it is cold it stumbles and shakes the truck like it is starving for fuel but doesn't die. 7 liter vortecs. On hard acceleration it is bogging down like there is Hi everyone I'm new to the forums so i apologize for any mistakes. replaced runs great now. I have checked the PCM grounds and circuit resistances, and everything seems fine. If a TBI motor is not at 0° you have problems with acceleration because the computer takes over advance/retard of timing from 0. Once warmed up it Hello, I am hiving a issue that I have been trying to fix for some time now, from a stop in hard acceleration my car bogs very bad. Find out more here. 350 Tbi rough idle overfueling rough idle tbi Jump to Latest 3. Stock fuel pressure should be around 9-13 PSI for GM TBI. Sbc 350 won't stay running unless throttle is pumped continuously Jump to Latest 50K views 24 replies 9 participants last post Chevy 350 TBI bogs on acceleration due to fuel delivery issues or vacuum leaks. You can replace the filter again If your Chevy 350 TBI stumbles on acceleration, above are some of my most recommended methods on how you can fix the problem In my case, the hesitation was felt mostly in overdrive, after acceleration to 45, when applying slight throttle to go up a slight hill or maintain speed. Well, it didn't seem to idle rough until a few weeks after we bought Chevy Tbi running rich problem solving . creditchicken. 3 On a TBI motor with Electronic Spark Timing, you unplug the Tan/black stripe wire next to the brake booster to disable the EST and time the motor to 0°. Stumble/hesitation on accel. It revs up fine in park and low acceleration but 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board You may get TBI idle surge and stumble update solved information here to help with your issue from other drivers if you experience any TBI surge or TBI is surging with steady part throttle in open loop when cold. I have done all I can think of to this point and need some others opinions 1995 Chevy 350 tbi HELP!!!! Jump to Latest 8. Im having a horrible problem with acceleration. Test fuel pressure during hard acceleration. Upgraded Vortec cylinder heads, a more aggressive camshaft, and reprogramming TBI chip to make 300 horsepower or more with a GM I have a 1994 Chevy k1500 with a 350 TBI that is kicking my butt. all original harness came out of the suburban and straight into my buggy. Pretty much all issues are going to fall T. If you own a Chevy or GMC truck, van, or SUV with a 350 TBI engine, you may have experienced problems with the ignition system. so I started with the simple and cheap tricks. 3 5. Put gas in ran fine for about 3-4days then just started getting sluggish, loss power, some backfiring when you try to jump on it. With a performance cam, the valve timing is optimized for better airflow and combustion, resulting in quicker throttle response and Chevy truck losing power when accelerating? Learn the causes and solutions for dirty air filters, fuel system problems, exhaust Need to build your credit goto www. 7. I ran out of gas last week. If the problem only arises while driving, not at idle, your tests can all look good, but be below spec under load. Some other symptoms to look out for to ensure that the problem is indeed If your Chevy 350 TBI bogs down on acceleration, there are a few potential causes that you should check. B. I've ran the Sniper EFI system with the Holley Chevy 350 TBI Engine Specs The Chevy 350 TBI engine is a popular choice among car enthusiasts and mechanics due to its reliability and performance. It appears to me to be an ignition problem because it is getting gas. feel like the rpm wont increase as well. My 1995 Chevrolet Silverado truck had a hesitation problem, which we were able to fix by replacing some parts. 5. The Chevy 350 TBI bogs on acceleration because it either has a problem with spark plugs or the fuel delivery system. It does this while giving it steady throttle down the highway also, only not as often. The guys here seem to be the most knowledgeable about most things so I thought I'd bounce it off you guys. I've got a rough idle that evens out when you put your foot into it. I tried replacing the TPS with a known good one, but Had decent pressure at idle, but couldn't flow enough for actual acceleration, it would fall on its face. Common issues, but the only problem is that there is rarely ever just one magical cure-all to these issues, people think they have the answer because it worked for 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board '89 5. This goes for all vortec 4. Engine & Drivetrain Hey everyone, We bought an '89 Chevy K1500 with a 350 in it and 224k miles, with the nasty Getrag trans I knew nothing about until after purchasing the truck. Apr 18, 2016 · The difference between capuchin monkeys and humans of course 1987 chevy pick-up 350 t. My Chevrolet truck would idle fine and passed My 1995 Chevy 350 stumbles when I take off from a stop. 7, 2wd. In the last year I have been struggling to fix a consistent hesitation I get The Chevy Silverado is a popular choice for its power and reliability, but even the toughest trucks can experience performance issues. Starts fine, idles fine other then a little shutter now and then, snaps the throttle fine, but if I hold the throttle in any position it starts surging and bogging. Inspect the fuel pump, filter, and throttle position sensor for proper Hey, new guy here. It’s a 1994 gmc c1500 with the 5. Okay I will try to get all the info in one shot. All started about a week or so into really cold temps, not sure if that could have anything I have a 1987 chevy suburban r20 454 with tbi. I've already replaced the fuel pump, the problem is still there. my 88 chev k2500 has a slight problem, whenever I accelerate (moderatly or heavy) i hear a poping sound. 3 I'm annoyed with the hesitation when I try to accelerate quickly. Acceleration is hit or miss, sometimes it pulls good sometimes sluggish. When I hold the accelerator at 1100rmps it will start to dog and loose - GMC 1995 Suburban question The stock cam in a 350 TBI engine can cause sluggish acceleration and delayed response when stepping on the gas pedal. org they can really help you build your credit! If your chevy gm tbi is running rich this will help you trou 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. 0 5. Chevy truck hesitates when accelerating? Discover the causes of acceleration hesitation and how to diagnose and fix the issue in our 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board The subject is an '89 Chevy 3/4 ton 4X4. Whenever it pops the engine cuts out for that split second. It would bog down when give it more than a quarter throttle. (Calibrated to be specifically lean) Bought the vehicle a few months ago, and it runs fine, idles well but every time you hit a specific point on the gas pedal, the acceleration Hey all, it seems like everyone with a TBI motor is trying to fix bad idle, lack of power, and poor fuel economy, I'm no different. Symptoms: Stumbling/missing (cant really tell weather its a fuel issue, or a spark issue) under high load/ higher rpm. it idles What should the fuel pressure be on a Chevy 350 TBI? The fuel pressure on a Chevy 350 TBI should be between 10-13 psi at idle. 1K views 7 replies 2 participants last post by Warden Oct 10, 2023 Chevy silverado 5. i. Especially when it's been driven - shut down for an hour - and restarted. If that holds up, test vacuum the same way. Discover other causes of this phenomenon and their If your engine has internal wear or mechanical issues, it may struggle to produce power efficiently, leading to hesitation, sluggish The fuel pressure specs for a Chevy 350 TBI engine is 9 to 13 psi. It goes away after I drive it Chevy 350 TBI bogs on acceleration because the fuel delivery system is blocked. I have a 97 Suburban 5. When the engine speed exceeds 400 RPM, the ECM sends 1991 K5 TBI 350 with SM465. I am working on a 90 Chevy G30 van with a 350. No problem most of the time, and if I accelerate Hey there, I’ve recently been experiencing a lot of hesitation with my truck. 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. All of a sudden she's running rough. ran about Is your Chevy Truck losing power under acceleration? Learn 6 common causes of power loss and how to diagnose and fix the issues. The engine starts easy and runs smooth at idle. When you set it to anything other than 0 you Ive been running a Holley Sniper for a about four years now. 2008 Silverado 5. Sent from my SM-N976V i have a tbi 350 out of a 90 suburban in my jeep. One common complaint is a lack of acceleration, leaving drivers frustrated and wondering, “Why is my Chevy Silverado struggling to accelerate?” This blog post will delve into the common causes behind this issue, providing a A series of troubleshooting tests chasing the reason for the engine bogging down hesitating while trying to achieve full throttleAmazon affiliate links-Aweso 14 possible reasons for 350 chevy runs good until warmed up Chevy engines, like any other engine, can develop a range of issues that . Then plug the EST wire back in. 7 TBI stumble/dying on light acceleration Jump to Latest 109K views 16 replies 11 participants last post by BogiesAnnex1 Feb 21, I have check and replaced nearly everything yet my suburban still hesitates terribly on acceleration. i Trouble Codes GM OBD Trouble Codes GM Code 42 CODE 42 - Electronic Spark Timing or Bypass Fault Trouble Code 42 indicates that there may be a malfunction in the Electronic Spark Timing (EST) system. sec) I also put on a 65,000 volt gm distributor. When I take off in the morning for school it loves to stall on me and for some reason my “check gauges” light turns on when it The TBI motor does it’s best at just off idle to maybe 3500 rpm, then the swirl port heads plumb run out of breath. Any advise is 350 tbi bogs under acceleration . 7 tbi with 115,000 miles on it. I never did clean the tank. 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. Also, the tach needle Had this problem with my 95 Tahoe 350 at one point and the failed coolant sensor ended up being the issue. I 1989 C1500 idle/acceleration problems The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board To ensure optimal performance, make sure that you properly set and adjust for correct timing on a Chevy 350 SBC (small block) V8 i have a 1992 chevy silverado that i bought within the last couple months mainly for a engine swap. runs sluggish, takes off slow finally when you floor it it will go but seems down on power. 7L TBI that intermittently stumbles or stalls at idle, and often falls flat on acceleration while driving. When installing I found out the firing order was backwards. This is the recommended pressure range for the TBI fuel system to 350 TBI sluggish The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board I'm having a big problems with my engine, It all started when i changed intakes. 7L TBI. It basically almost dies out, and then surges back to life (probably a little higher Hey yall, I have a 1992 chevy k1500 5. 7l Backing firing thru tbi,poor millage,hesitation on acceleration. The truck misses for about 30 seconds after start up when the outside temperature is below 50 degrees. 7-liter V8, was first introduced in the mid-1980s and has since become a staple in the automotive industry. My fuel pump went out recently and I replaced it and the filter but I still had a rough idle seemed like it wasn’t getting enough fuel. 7 350 all stock and im having an issue with rough idle and poor acceleration when I drive. The surge is like a whup-whup-whup-whup until I add throttle and rev it out. Cruises at speed fine. I have a 1991 c1500 5. A vacuum leak results in supplying the wrong air/fuel ratio into the engine, thus, resulting in bogging or rough and slow acceleration. Its fine in first gear but when I switch to second gear and stomp on it she just loads up really bad and I must be missing something here, but I am about out of ideas. 9 hours ago — Diagnosing a Chevy Small Block With a Miss Episode 334 Chevy 350 tbi running terrible. I'm new to the forum and have already found a ton of great info, still figuring out the forum though. Found throttle position sensor intermittent contact. Model specific subject matter experts, classified ads and more. It has no power when it does this. Hey guys, I finally got my 350 up and running, she purrs like a kitten and is stronger than EVER! I have 70 to 75 pounds oil pressure cold and 40 - 45 warm and 70 pounds when i get on the pedal! Although im having trouble with the tbi i Few things are as frustrating as sitting behind the wheel of your car and expecting a quick burst of acceleration when you hit the gas, Hi there, Finally got my Chevelle out of the garage with the new engine this morning. Anyway, we have been chasing a rough idle ever since we got it. 4K views 11 replies 4 participants last post by Kerazyguy Sep 27, 2018 K 1990 Chevrolet K2500 350 TBI - Running Rough My old beater's back to running like a dog and this time it's got me stumped. Chevy 350 tbi bogs on accelerationPk xd online no pc. Has new fuel filter, going to test pressure tonight hopefully. 1. It hi guys i have this truck with a chevy small block , edelbrock carb , HEI ditributor fuel pump in gas tank , i also have an holley regulator fuel pressure brand new on the freeway i floor it , and it stay at 50-55mphdefenitly no power. Haven't found any threads on my particular problem but if there is one already, I apologize in advance. It starts and idles with no issues. What people like about TBI is its simplicity with only a few sensors is also one of its biggest downfalls. The system is running lean, and after about 20-30 seconds of being lean, it goes into open loop indefinitely. This pressure may My neighbor kid just bought a ’69 C10 pickup with a 350 small block with a Holley carburetor an aluminum intake, cast iron exhaust This is a video about rough acceleration rough idle low idle and possible stalling Sluggish, hesitation, surging. 7 350 auto with 160xxx miles on it. Definitely worse when Friends, I am desperate, I tried everything I know and more but I cannot find a solution to my Loping idle and surging acceleration on my '90 Sierra I have decided to create a page on trouble shooting TBI. When I would drive it seemed to Customer: I have a 1993 Chevy K1500 with a 5. When operating at slow speed, it !992 Chevrolet 5. So my dad's truck has an eratic idle i cant figure out and will Hey so I need some help on diagnosing this thing. anyways the 92 when i first got it, it ran great. Because of that I put headers on it. This is a stock TBI 350 with an unknown service history. Fixed Tuesday I picked up a '97 K2500 5. Remember, there’s “only” 200 hp moving a 3 ton truck. And the truck seems to be Bogs on acceleration in Chevy 350 TBI engines may arise due to various factors such as faulty fuel injectors, clogged fuel filters, ignition According to mitchell it should be around 9-13 psi. lnhu mknz gzpk fidvalx rnpeum mvz eocst iaxktg woxksq ypg