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Pickups Chevrolet S-10 & GMC S15 Sonoma Chevy S10 - GMC S15 and Sonoma Starting problems
195 messages, Last post on Nov 20, 2009 at 8:21 AM
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I had the similar problem, started last may, tried to fix since this without results but yesterday, I tried a new distributor module ... looks like it solved the problem !! I will tried to start it for a certain period to verify that, even cold starting than hot starting, but it seems to be ok !!!
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| I have a 1997 GMC Sonoma with the 4.3L Vortec V6. Owned it for about two years with no problems (180 000kms). About 2 months ago, I went to start it in the morning to go to work and it wouldn't go. It would turn over but not start. After about half an hour of screwing around, adding starter fluid etc., it finally went. Ran rough for a few minutes, but then fine all day. Replaced all the filters that night as they were due to be changed. A few days later, same thing. No starter fluid this time, just alternated holding it floored and not, took about 10 minutes to start, ran rough for a while then fine. Replaced plugs, wires, cap and rotor. Ran fine for a week or so, then problem returned. This time I couldn't get it to go to save my life. I thought because it only happens in the morning that maybe condensation was the problem (it starts after sitting all day at work and it had rained heavily the night before). Checked all the electrical connections I could easily access and they all looked clean and dry. Plugged in the block heater and ran a hair drier on the distributor for half an hour, then it started first crank and ran great. Next time it happens I will only use the block heater and see if that works. Any ideas? It seems to me some sensor is telling it not to fire, but not sure. | |
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I Have a 1999 Chevy S10 4.3 Vortec. I am having a problem starting the truck when it sits for a while. It will crank over for several minutes. Once it starts and i run it, it will start all day with no issues. It only happens when it sits over night. The fuel pump turns on and has been replaced. The plugs, wires, and cap all have been done. Tried a new battery. Had hours of diagnostics done and have gotten nowhere. I just dont get why it is only when it sits. Its driving me crazy. Any Ideas? |
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Replying to: nitrate (Oct 10, 2007 4:32 pm) |
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| i have a 1988 Chevy s10 2.8 2wd i cant get it to fire over i had done a transmission in it about 3weeks before she stopped i did cap rotor wires plugs and fuel pump and the egr but before i did that i was getting fire out the carburetor got a timing light she was dead on the money compression test all were at about 146-150 at this point i don't no what more it can be after changing everything I'm not getting fire out the carburetor its just not kicking over now the fuel is going down into the carburetor i did a o2 sensor to night and still have nothing not sure what more it can be | |
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so i changed the spark plugs to what my 2 haynes books say, also with what i had found online. and from 5 different sources, the firing orders are all the same for my '85 GMC S15 Sierra Classic. i had changed spark plugs, wires, distributor cap, and rotor. and had put the new wires on in the firing order that i was repeatedly told was the right way. but now it just doesn't want to fire. i had sprayed some carb cleaner into the carb to clean it out while i changed oil, oil filter, air filter, rotated the tires, etc. but i think i had either sprayed too much into the barrels to give it that rough turn over sound followed by backfire, or i now have it in the wrong firing order. i had taken the other cap off to change it out, but it never occurred to me to note which wires were where. since ran like a dream before. now i need help. |
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i have an '85 GMC S15 Sierra Classic 2.8L V6 (Carb) ---edit--- *Note: this is the last place i went to find the firing order for my truck. link title - Engine Firing Orders: 1985 are these right? |
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Replying to: tolouse (Nov 05, 2007 3:10 pm) You need to get #1 cylinder on compression stroke on timing mark, then see if the rotor points to the #1 plug wire. Some one may have removed the dist and timed it out of normal sequence. |
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Replying to: gonogo (Nov 06, 2007 8:47 am) anyways, just went back out, detached the cables from the distributor, took the dist back off to verify the #1 (underneath the cap, there is 1 number that tells you which is for the #1). i also made sure the rotor was hitting the cap also. then i plugged each one in numerical sequence to the cap, to make sure that i had it right. after i had it all screwed down, plugged up (in my frustration yesterday, i had switched #2 and #6 on dist without verifying), i gave it a try. there was a spray that came from my carb. it smelt like the cleaner i had sprayed in there. i think i have flooded the carb with cleaner. after a few more tries and sprays, i decided to give it a rest for a few before i go back out there. because it sounds like it wants to turn, but hesitant because of the cleaner. i'll be back with an update on how it goes. |
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