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Pickups Chevrolet S-10 & GMC S15 Sonoma Chevy S10 - GMC S15 and Sonoma Stalling/Dying issues
168 messages, Last post on Nov 02, 2009 at 11:36 AM
You are in the Chevrolet S-10 & GMC S15 Sonoma Forum. Your Host is kcram
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Replying to: lithiumed1 (Dec 21, 2006 10:46 am)
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Replying to: jrocko (Dec 28, 2006 11:48 am) First of all, there are two 4.3L engines available. One is with CPI (central port injection) and the other is a code Z engine or throttle body. You didn't specify in your post which one you have. You mentioned that you replaced the fuel pump and it is still losing pressure? Where are you taking the reading from? If you turn the key to the ON position, can you hear the pump run? Could you have a bad "new" pump? I had a problem on a 95 2.2 Sonoma that started and ran well for about 2 miles then would bog down and die. I put a pressure gage on a "T" fitting right after the fuel filter going towards the engine with a long enough hose so the gage could be duct taped to the drivers window. That allowed me to monitor the pressure as I drove. Sure enough, when the pressure started dropping, the engine bogged down and eventually died. It happened on acceleration only. It would idle ALL DAY LONG if I let it without any problems. Once I pulled over and shut off the engine, I could restart immediately and go another couple miles. I used to believe that in-tank pumps would either run or NOT run. I was wrong. I replaced the pump assy and connecting hoses in the tank and it was all taken care of. Ran like a champ once again. If this problem you are having is repeated every time you drive, and accellerate, then I would say your pump or since it is new, the interconnecting hose is bad. I can't remember what they called that piece but I replaced it to eliminate having to pull the bed back off to get to the fuel tank again. It's a little more expense but will keep you from having to guess and sliding the bed off to the side once more. Good luck vi-kan |
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| I have a 1995 s10 4.3 ss package motor bored and built not sure to wat spec. i have had it for 20,000 miles and drive it everyday, burns a quart of oil every oil change. But no noise and runs fine other than the stalling. i have changed fuel pump, fuel filter, egr valve or regulator. I have a cousin that runs a motor shop and has hooked the comp. diognostic to it, it says bad sensor which i changed and fuel rich. Cousin said could be a wire grounding out. i hear it pulling air wen it misses. dont know any suggestions be more than glad to listen. | |
| Hey i never did change the hoses leading to the pump or that assembly. The only thing is my truck never dies. It just has like a miss in it but wen u put the accelerater to the floor it runs fine. Its sometimes backfires threw the number 4 cylendar im thinkin it might be an injector. I guess that might cause it to run rich. idk confused. But i will try to change that assembly or hoses u were talkin bout. | |
Hello to all... I've been working on my truck for 3 days now and still can't figure out the issue. After the truck gets to operating temp. it hesitates something fierce when I give it moderate gas ie. going up hill. It gets to the point I can't hardly get out of 2nd or 3rd gear. So far I've did expensive troubleshooting with no luck. I've replaced the plugs and wires, Fuel filter, Fuel pump, Coil, and Map sensor. The reason I replaced the Map sensor was because after the service engine light came on I received a code to replace the Map sensor. If there is anyone out there that can help I would greatly appreciate it. Thanks and Happy new Year!
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| I am having the exact same problem the poster 'bakesale' was having back in october (did he ever get that figured out?) - his post - ..."the motor also 'drops out' at 15mph in 1st, 20-25mph in 2nd, 30-35mph in 3rd, which takes downshifting in an emergency (or uphill, which is a must in this city) out of the question."... by drops out im assuming no longer accelerates no matter how hard you try n push it. I've tried replacing the EGR the spark plugs n wires and even cleaning out the throttle body but I just cant get it to -GO-. :-\ I've had this s10 for years now and recently hit 125k miles i LOVE it but it just seems like its going dead on me :-| Anyone have any ideas? | |
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Replying to: bronxcats (Jun 02, 2006 5:33 am) I have a 93 sonoma and its hesitating after getting to operating temp. Gets to the point I can't hardly drive it. Changed just about every part possible and still no luck. Do you have any Ideas? Thanks and happy new year. Tony
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Replying to: acrumpler (Jan 04, 2007 7:24 am) I would check and make sure your air filter is not plugged for starters. I know people think of that as the last thing to check if it's checked at all. At Idle, it will run fine, but as the engine demands more air as you accelerate and give it more fuel, it will stumble as if it's being "choked". |
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Replying to: sjowett (May 29, 2006 3:58 am) |
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