Engine Computer DTC GU 2002 4.8L Auto
Submitted: Monday, Nov 19, 2007 at 22:54
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Steve Mu
I have a DTC P2135 engine fault (throttle valve assembly), before I go and replace it, is there any special procedure that should be followed after
clearing the fault? e.g. does the car need to be driven so computer can go through a learning process. The fault keeps re-occurring each time it is cleared, however the car hasn't not been driven after the fault
clearing. Thanks for any advice given.
Reply By: Robin Miller - Tuesday, Nov 20, 2007 at 07:56
Tuesday, Nov 20, 2007 at 07:56
Hi Steve
No not particularly - it does retune itself a bit but not much.
Mines a manual so that actual throttle turning is not electronic but by cable however I had a similar fault after measuring the valve clearances and didn't click the throttle connector home quite fully when putting rocker cover back on.
Robin Miller
AnswerID:
272677
Reply By: Chaz - Tuesday, Nov 20, 2007 at 11:46
Tuesday, Nov 20, 2007 at 11:46
There is a test and reset option in the diagnostic procedure of the throttle position sensor. I can’t remember all of it, but its something like turn the ignition on without starting the engine and fully depress and release the throttle twice, then turn off the ignition and it should be reset. Resetting the MIL and DTC is in the manual or can be done with an OBD-II tool.
The TPS may just need adjusting.
AnswerID:
272707
Follow Up By: Steve Mu - Tuesday, Nov 20, 2007 at 21:25
Tuesday, Nov 20, 2007 at 21:25
thanks for the tips. tried your suggestions but fault keeps coming back. could be intermittent fault, or maybe the sensor is stuffed.
FollowupID:
536126
Reply By: Steve Mu - Tuesday, Dec 04, 2007 at 20:16
Tuesday, Dec 04, 2007 at 20:16
Problem solved after much hair pulling, had a sticky idler gear on the butterfly. happy days are here.
AnswerID:
275012