why does it shut off when its hot out? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-09-2010, 09:45 PM   #1
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Default why does it shut off when its hot out?

my 92 ssei,i swear it'* possesed.it just got a brand new aluminum radiator,fresh coolant and the thermostat has like 300 miles on it.i wired the fan 2 be always on when the engine is running,but its still gettin hot and randomly shuts off when its really hot outside.let it sit for 5 or 10 with the hood open and it will fire back up and go again for who knows how long.runs like a dream when it is not hot out.any ideas any 1 ?
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Old 06-09-2010, 11:32 PM   #2
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Quote:
Originally Posted by trixster68 View Post
What about a bad coolant sensor my camaros went out and did what you describe it would run 5 to 20 minutes and then die. I replaced the coolant senor and it was back to normal. Good luck
Seemed like some good advice to me.
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Old 06-09-2010, 11:48 PM   #3
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Could be a bad crank sensor when it gets hot it will shut off and then fire up again my 94 SSEi did that I changed sensor and no more problems. Good luck

Last edited by trixster68; 06-09-2010 at 11:48 PM. Reason: spelling
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Old 06-10-2010, 03:00 AM   #4
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its been suggested to me. thanks,will have to try it.
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Old 06-10-2010, 08:07 AM   #5
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When it don't start do you have spark?
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Old 06-10-2010, 09:23 PM   #6
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um i am pretty sure.the last few times ,since i put in a new icm and have checked for spark there has been.
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Old 06-11-2010, 02:40 AM   #7
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I would def check for spark next time but ik its a common problem to have bad crank sensors or even a module but less likely
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Old 06-11-2010, 11:29 PM   #8
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ya i have thrown my spark tester in the glove.and am gonna check it next time it does it.thanks.will let ya know.but its supposed to be rainy all weekend,my bonnie runs like a champ when it less than 70 out.
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Old 06-27-2010, 07:36 PM   #9
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ok.no spark when it shut off this time.
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Old 06-29-2010, 11:22 PM   #10
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IIf possible check engine rpm when cranking.
I you can read rpm you hve no spark in any cyl replace ICM
if you cant read rpm you need to check ICM wiring and CKP sensor and wiring
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