ATAO MAP sensor voltage high?
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Joined: Mar 2002
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From: Columbia Mo
ATAO MAP sensor voltage high? I am having problems with my LS1 that are not consistant but was able to trap a pending DTC when I was ATAP'ing and the car died. The Code is
P0108 MAP sensor voltage high. Every time the car dies (runs ruff then dies) I get this code, then all I do is wait a few minutes and it starts and runs fine. I also have had the codes
P0172 and P0175 both are rich condition on each bank. Alldata says my Ltrim should be at -13 at idle but mine is -10.9
Any ideas would be very helpful as I am not sure if I have a bad MAP sensor or something causing it to go to high voltage.
Ozz
99 WS6
LID GMS-MAF and Corsa Catback (problem was happening before mods also.
P0108 MAP sensor voltage high. Every time the car dies (runs ruff then dies) I get this code, then all I do is wait a few minutes and it starts and runs fine. I also have had the codes
P0172 and P0175 both are rich condition on each bank. Alldata says my Ltrim should be at -13 at idle but mine is -10.9
Any ideas would be very helpful as I am not sure if I have a bad MAP sensor or something causing it to go to high voltage.
Ozz
99 WS6
LID GMS-MAF and Corsa Catback (problem was happening before mods also.
Thread Starter
Launching!
Joined: Mar 2002
Posts: 242
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From: Columbia Mo
Re: ATAO MAP sensor voltage high? Well you guys were not much help here <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> but I was able to contact someone from GM and he confirmed what I found out on the web lastnight. here is what is recommended. (due to the way my problem comes and goes I am swapping the sensor)
Check vacuum hoses. Check wiring to sensor. Change sensor. Check connections at ECM
Check vacuum hoses. Check wiring to sensor. Change sensor. Check connections at ECM
Re: ATAO MAP sensor voltage high? If your Ltrims are -10.9 you are very rich at idle. You want your ltrims as close to 0 as possible maybe a little on the negative side (-1 or so). I'm not sure on the other though.
Thread Starter
Launching!
Joined: Mar 2002
Posts: 242
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From: Columbia Mo
Re: ATAO MAP sensor voltage high? Really? I read in Alldata that the idle should be at -13 and that a number less than that is richer i.e -12 or -11 is richer (which makes sense) I know I am looking for 0 to -1 at WOT but not at idle so can someone chime in here or point me to a list?
Ozz
Ozz
