3800 won't start - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-20-2008, 04:25 AM   #1
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Exclamation 3800 won't start

hello people; i know the no start questions been ask a thousand times. so here we go down the rabbit hole again. i have a no start issue, with a 92 3800 series 1 motor.

the first time it did it did not start it was warm, got it to start because of one of two things it either cooled down enough, or because i reset the ecm(without reading the codes).

got it another block or two, it stalled, warm again; got it towed home.

replaced the crank and cam sensors,, oil pressure sensor still doesn't idle; it will run when floored, or in limp home mode(after unplugging the maf)

pcm maybe?
asking some possible suggestions as to what it could be

in advance

Last edited by baldlobo; 10-20-2008 at 04:26 AM.
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Old 10-20-2008, 08:05 AM   #2
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Did you check your MAP?
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Old 10-20-2008, 05:19 PM   #3
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it doesn't have a map as far as i know, it only has a maf sensor.

now for a better question what sensors if any does it bypass when floored or in limp home mode

i'm currently thinking the iac is plugged or decided to kill itself
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Old 10-20-2008, 05:29 PM   #4
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I would like to know where all of the aforementioned sensors are located.
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Old 10-20-2008, 05:33 PM   #5
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Quote:
Originally Posted by airsuperiority View Post
I would like to know where all of the aforementioned sensors are located.
crank is behind the vibration damper/crank pully

cam is beside the water pump

maf is attached to the throttlebody

iac is also attached to the throttlebody

oil pressure is attached close to the oil filter

Last edited by baldlobo; 10-20-2008 at 05:34 PM.
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