TPS adjustment
Posting Guru
Joined: Apr 2011
Posts: 1,119
Likes: 1
From: Hartland, WI
People get slightly annoyed when A) A thread from 2009 is resurrected B) The thread is hijcked, and C) asks a question that has been covered in depth before, and can be answered using the search function.
To answer your question: 99% of ALL EFI cars and trucks require closed throttle TPS voltage to be less than 1v. Anything above that and the PCM/ECM is seeing an open throttle. WOT should "theoretically" be 5v, HOWEVER that never happens in the real world; it will be 4.8-4.9 ish volts.
Understanding that this is a 5v reference sensor is important. .9-5v isn't a huge spread, so tenths of a volt can make a difference (it's sensitive).
Trying to "cheat" by moving the throttle stop screw, turning the TPS, etc may work for some people, however it's a band-aid for another problem.
oldfuelinjection.com and the Search function will be your friend.
To answer your question: 99% of ALL EFI cars and trucks require closed throttle TPS voltage to be less than 1v. Anything above that and the PCM/ECM is seeing an open throttle. WOT should "theoretically" be 5v, HOWEVER that never happens in the real world; it will be 4.8-4.9 ish volts.
Understanding that this is a 5v reference sensor is important. .9-5v isn't a huge spread, so tenths of a volt can make a difference (it's sensitive).
Trying to "cheat" by moving the throttle stop screw, turning the TPS, etc may work for some people, however it's a band-aid for another problem.
oldfuelinjection.com and the Search function will be your friend.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
I truly thought I answered your question without adding any drama, just cold hard facts. If you feel like I slighted you in any manner then I sincerely apologize, that was not the intent. Debunking an internet myth is not always a glamorous job, but someone has to do it.
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