WTF! a/c and ses issue...
07-29-2011, 03:02 PM
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Staging Lane
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WTF! a/c and ses issue... When I. Am driving with my a/c on my ses light comes on with a tps code. After driving for a little while and maybe 2 ignition/drive cycles without a/c it clears itself. Replaced the tps 2 times and that didn't fix it. I think its the tune but when I talked to the guy who tunes it; he says its probably something mechanical. I have been watching the voltages and checking the tps on scan tool but see nothing wrong. Anyone have any helpful advice? Or have heard of this?
07-29-2011, 03:42 PM
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what code is it throwing? is it a p0121 code? under engine diagnosics u can change the values..... http://www.hptuners.com/forum/showthread.php?p=101510
Last edited by SLP4CamaroSS; 07-29-2011 at 03:50 PM.
07-29-2011, 04:11 PM
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Measure / scan TPS voltages - not % - at idle and WOT (key on, engine
off, unless you like listening to the rev limited chop) and get back to us.
Do it in both A/C cases, on & off. But I guess on might need the motor
running. Does the code pop after WOT, or without going WOT?
off, unless you like listening to the rev limited chop) and get back to us.
Do it in both A/C cases, on & off. But I guess on might need the motor
running. Does the code pop after WOT, or without going WOT?
07-29-2011, 11:16 PM
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I believe it is a p0121 code but I will double check tomorrow at work. And it come on without going wot. Also when the code comes on the trans goes into a predetermined shift table and the car doesn't have much power... basically like limp home mode. I have been watching/scanning the voltage and not % and am not finding anything.
08-02-2011, 10:48 PM
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it is a p0121 code...
Tps voltage at idle with a/c off is 0.71
Tps voltage at idle with a/c on is 0.71
At wot tps voltage is 4.33
I had the scanner and was driving and the code came up. The scanner I have has code trigger recording... there was no change in tps voltage! It happened at idle and I can go before the code and after and no change! ... 0.71 the whole time
Tps voltage at idle with a/c off is 0.71
Tps voltage at idle with a/c on is 0.71
At wot tps voltage is 4.33
I had the scanner and was driving and the code came up. The scanner I have has code trigger recording... there was no change in tps voltage! It happened at idle and I can go before the code and after and no change! ... 0.71 the whole time