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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
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My 96 S-10 (4 cylinder) sputters when accelerating. This gets worse as the engine warms up. Sounds like it's poping/backfiring in the throttle body sometimes. There is no check engine light at this time.
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Replying to: elroy5 (Jun 23, 2008 2:24 pm) |
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During warm weather (mostly summer months) my 2001 S10 has a problem with the idle speed increasing, once I notice the increase in RPMs I can shut the vehicle off, restart it and it goes back to a normal idle. The idle will remain normal until I drive it again for a few miles. I have taken it to a few places but each time they look at it the idle speed does not increase. This problem surfaced the other night and when I tried to pull away from a stop the vehicle about died. The funny thing is I can drive this vehicle for hours in colder weather and it will never occur. As stated this is a 2001 S10, 2.2 engine, auto and about 125,000 miles on it. All preventive maintenance is completed on time. I have a feeling it could be the 2 different sensors or the Idle Air Controller. Any suggestions would be extremely helpful.
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Replying to: lilgto (Jun 27, 2008 10:30 am) If you suspect the IAC, have you tested it yet? From what I've read, the IAC valve is something that receives data from other sensors as well. Coolant temp, AC, accessories etc. It is supposed to compensate for the load you are putting on the engine. i.e. if you turn the AC on while idling, the engine would normally slow down due to the increased load, thus making the IAC compensate for that and speed up the engine to keep is from stalling. If you disconnect the IAC while the engine is running and put a load on the engine, the engine should stall which indicates the IAC is working. If this is the case, the IAC probably isn't the problem. Sounds like it may be an air blockage issue. Maybe a vacuum line that is restricted or pinched that is plugged into the intake? You know how an engine will speed up if the choke is on? Same principle in my opinion. Good luck.
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Replying to: vikan (Jun 28, 2008 5:02 am) Thanks for responding, yes I have tested it and even changed it out but it has started happening again during the warm weather. I have been looking for vacum leaks for some time but so far nothing. I am thinking the problem might be in the PCM since the fast idle issue disappears whenever I shut the vehicle off and restart it. I will keep trying to figure this out since the mecnanics seemed to be puzzled. Once again, thank you for your prompt response.
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Replying to: lilgto (Jul 05, 2008 5:00 am) After a quick search on google and reading from this Q & A, it sounds like there may be something shorting that leads back to the PCM. You might want to do a little reading here and maybe even post a question to these guys. I'd hate to see you spending money on guessing what might be wrong, only to have to spend more on something else. I know it gets frustrating so hang in there. Personally, I think at this point, I would attempt to find a schematic that shows you what connects to anything that has to do with idle speed. http://www.2carpros.com vikan
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i am experiencing an electrical issue with this vehicle. i am blowing fuses left and right. first it was the fuse for the guages. i unplugged the ac relay and that problem went away. not even a week later while driving home, the vehicle just dies. the fuse for the ECM Batt, blows. i replaced the fuse and restarted the vehicle with a little coaxing, it idles, but when i press the accelerator pedal, it starts to buck and sputter, then dies, blowing the fuse once again. the vehicle will move in reverse fine but when it is in drive it buck and dies. i have a mechanic chasing wires but has found nothing as far as a pinched wire or exposed wire causing the short. any help with this will greatly be appreciated.
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Replying to: vikan (Jul 08, 2008 3:12 am) Again, Thank you for the information, I will check out the link you provided and see what happens. I too have thought it was a short but then I was told by a good source it could actually be the PCM going bad... |
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please someone..i need help.i have 1992 gmc sonoma 4.3 6 cyl 2wd i have had this truck for 3 years now..she's been a real good truck.. but the other day i got off the highway and came to a stop..and it just died..took about 45 minutes for it to start back up..got it about 4 miles more and it died again..took 2 hours for it to start again..got about 3 blocks and died..had it towed home the rest of the way.i have replace fuel pump,filter,thermostat,map sensor,throttle sensor, coil i can go ut side now and she will start right up but as soon as she warms up it dies. the igition works fine ..to me something is getting hot and shuts engine down till it cools back down...please if anyone can help i would be grateful this truck is my lively hood and i need her back on the road... thank s 
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some one out Please see if u can help, i have a 1992 gmc sonoma. my problems started with fuel pump. i replaced fuel pump, filter. truck ran good again/ about week later i came off highway and it died. took about 45 min to start again got it about 3 miles and died again. took 2 hour for it to start.. got 3 blocks and once again it died. i then had it towed home. i had code check come up for map and throttle sensor..i have replaced them also now. i have even changed thermostat.. the problem i have when truck is cold it will start right up but once it warms up it shuts down..the igition cranks real good but it wont start. i have checked the coil it works..so if someone else has this problem and got it fixed please help..this truck is my lively hood and i need it back on the road. many thanks |
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