Last post on Dec 04, 2013 at 10:20 AM
You are in the GMC Jimmy
What is this discussion about?
GMC Jimmy, Engine, SUV
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#266 of 311 Re: 95 gmc jimmy-stalls out when hot [wrenchbrkr]
Nov 11, 2011 (1:17 pm)
many engines have an over heat cut off, if this is malfunctioning or getting a faulty signal (that says the the engine is hotter than it is) this would explain why it cuts off at a regular 180* and won't recrank until it cools off. also, could be a faulty temp reading (indicating lower than actual temp) and the cut out is working as it should.
Try running without a thermostat, engine should not get to operating temp; it the engine still dies its not the over heat cut off.
#268 of 311 Re: 95 gmc jimmy-stalls out when hot [steelsage]
Nov 12, 2011 (12:26 pm)
All ready changed thermostat,fuel pump(delphi),spider injectors,computer temp. sending unit---ran truck again died,sprayed brake clean in intake and it would start and if i could get up to exactly 3000 rpms would stay running.---pulled vaccum line off and put in a bottle of brake clean and engine stayed running--little ruff--untill cleaner ran out-----dont want to buy anything else unless i have to...(like computer or injectors)
#269 of 311 Re: 95 gmc jimmy-stalls out when hot [steelsage]
Nov 26, 2011 (9:29 am)
found problem --was spider assembly when engine got hot solenoid shutdown-replaced with one from junkyard and ran perfect-thanks for help
#270 of 311 94 Jimmy dies and then wont start
Dec 06, 2011 (2:21 pm)
I have a 94 Jimmy and suddenly the other night it just died, like you shut the key off died, and wouldnt start. It acted as thought the battery was dead, we had a friend come give us a jump and it cranked over just fine, the next night it pulled the same crap, but this time it would not start with a jump. we got it home and put the battery charger on it, it started and ran fine. Husband drove it around the block and it ran fine, went to start it to get my kids from school, and it will crank but wont start. ???????? help!
#271 of 311 Re: 94 Jimmy dies and then wont start [anorman3]
Dec 06, 2011 (2:54 pm)
Check the alternator. Most likely you will need a new battery now too. Next time the car is started, disconnect the negetive cabel on the battery and if the car shuts off the alternator is bad. Or if you have a volt meter read the voltage between the + and - battery terminals. It shouldn't read lower than 13.5.
#272 of 311 Re: 94 Jimmy dies and then wont start [Alfakenny1]
Dec 06, 2011 (4:37 pm)
Check your Volt gauge next time it's running. 13.9v.-14.2v. is optimal if i recall?
If it's reading 12v. or below...It's the alternator (or cheaper yet....alternator voltage regulator usually held on by screws on back of alternator).
Most people just replace the whole alternator. i on the other hand...save $$'s and just change out the voltage regulator.
#273 of 311 Re: 94 Jimmy dies and then wont start [Alfakenny1]
Dec 07, 2011 (12:37 pm)
It wont start. . . . . can hear the fuel pump hum when you kick the key, and it cranks but wont fire? really starting to get on my nerves!
#274 of 311 Re: 1999 Jimmy No start condition [jmaffin]
Dec 10, 2011 (10:35 am)
i have a 2000 jimmy and i have come up with my last option in mine is a oil pressure sensor. as i have changed pump regulator valve coil module and filter. once you get it started it runs great for the day but the next morning when its cold its back to not starting agin. and i have no check engine light n shops computer says its fine