On a serious note. My bonnie - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-04-2010, 02:38 PM   #1
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Default On a serious note. My bonnie

Recently changed the map & tps sensors. Not throwing codes. problem is when it first starts up it usually stalls. Just once. Sometimes not at all. Checked for vacuum leaks. Didn't find any. Also I have a coolant smell,but haven't found a leak seems to run normal. Any ideas?
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Old 03-04-2010, 03:31 PM   #2
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Recently changed the map & tps sensors. Not throwing codes. problem is when it first starts up it usually stalls. Just once. Sometimes not at all. Checked for vacuum leaks. Didn't find any. Also I have a coolant smell,but haven't found a leak seems to run normal. Any ideas?
The stalling sounds like a sticky or dirty IAC.

Coolant smell could come from a number of things, overflow that is slowly steaming off or if it is a coolant smell on the inside, it could be a slow leak on the heater core or lines to it.
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Old 03-04-2010, 06:07 PM   #3
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Look in to your TB and UIM and see if you have coolant. and I would clean your IAC
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Old 03-04-2010, 11:15 PM   #4
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help me with the intials i'm a might lame. Heater core is already bypassed. Using a actron scanner 9175 (?) Freeze readings aren't being accessed by computer,do we even have that option on '97?
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Old 03-05-2010, 12:02 AM   #5
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IAC refers to your idle air control, it meters air at idle and startup, whenever your throttle body is closed basically

TB = Throttle body

UIM = upper intake manifold (plenum) you want to pull the intake tube off your throttle body, take a flashlight, and look down it while holding the throttle open. If you see coolant, that is the problem he is referring to.

heater core is bypassed? How do you heat your car?

Either way, a small amount of coolant can make a LOT of odor believe it or not. You could possibly be looking for a very small leak, or even just some that was spilled in a place that air moves over so you continually smell it.
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Old 03-05-2010, 12:08 AM   #6
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heater core is bypassed? How do you heat your car?
Florida.

Although after that latest cold snap, I bet he'* regretting it.

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Old 03-05-2010, 12:10 AM   #7
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not me the wife'* got her for the moment! don't ask
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Old 03-05-2010, 01:53 AM   #8
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Florida.

Although after that latest cold snap, I bet he'* regretting it.

crap, I have been living in the northern plains too long
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Old 03-05-2010, 02:02 AM   #9
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Hell has finally frozen over.
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