Stalling problem
jbag
12-04-2007, 07:55 PM
91 Gmc Jimmy s-15, 4.3L throttle-body inj. 2 wd, 152K. Auto.
STALLING PROBLEM.
Car will start and runs great for 7-10 minutes. Then sputters and dies. Replaced plugs, cap, rotor. Pulled in-line fuel line at t-body & it's pumping like crazy. Also...when it dies, I can still see fuel squirting into the t-body. After it dies, I check for fuel...plenty of fuel & plenty of spark> This makes no sense? I have spark /fuel, & compression, yet it dies every 7-10 minutes. I did replace the in-tank fuel pump ,filter & pressure regulater at the t-body not to long ago. Whassup???
Thanks,
jon
STALLING PROBLEM.
Car will start and runs great for 7-10 minutes. Then sputters and dies. Replaced plugs, cap, rotor. Pulled in-line fuel line at t-body & it's pumping like crazy. Also...when it dies, I can still see fuel squirting into the t-body. After it dies, I check for fuel...plenty of fuel & plenty of spark> This makes no sense? I have spark /fuel, & compression, yet it dies every 7-10 minutes. I did replace the in-tank fuel pump ,filter & pressure regulater at the t-body not to long ago. Whassup???
Thanks,
jon
jbag
12-08-2007, 05:09 AM
FWIW:
I fixed it and here was the problem.
check for any codes if you haven't already. It's an easy DIY on older GMs stuff:
http://www.troublecodes.net/GM/ (http://www.troublecodes.net/GM/)
The 12 code is just the computer saying hello. The code string starts and ends with 12, usually three times, with the faults in between, i.e. 12-12-12-34-34-34-42-42-42-12-12-12.
Lots of help here:
https://www.autozone.com/N,312755/in...cleSelect4.htm (https://www.autozone.com/N,312755/initialAction,repairGuide/shopping/vehicleSelect4.htm)
I then ran the codes .12-12-12-15-15-15-12-12-12
15=Coolant temperature sensor signal indicates a temperature colder than -27? F for 30 seconds after the engine has been running for at least 30 seconds.
Hmmm. replace the Coolant temperature sensor??
Put a new sensor in ($14.61 @ NAPA) and it ran for 35 minutes!!!!!!
Drove it last night with no problems.
I fixed it and here was the problem.
check for any codes if you haven't already. It's an easy DIY on older GMs stuff:
http://www.troublecodes.net/GM/ (http://www.troublecodes.net/GM/)
The 12 code is just the computer saying hello. The code string starts and ends with 12, usually three times, with the faults in between, i.e. 12-12-12-34-34-34-42-42-42-12-12-12.
Lots of help here:
https://www.autozone.com/N,312755/in...cleSelect4.htm (https://www.autozone.com/N,312755/initialAction,repairGuide/shopping/vehicleSelect4.htm)
I then ran the codes .12-12-12-15-15-15-12-12-12
15=Coolant temperature sensor signal indicates a temperature colder than -27? F for 30 seconds after the engine has been running for at least 30 seconds.
Hmmm. replace the Coolant temperature sensor??
Put a new sensor in ($14.61 @ NAPA) and it ran for 35 minutes!!!!!!
Drove it last night with no problems.
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