How to test throttle position sensor?
Thread Starter
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
How to test throttle position sensor?
My car is stumbling during cruise speeds during minute changes in throttle. This occurs even with cruise control engaged. Autotap shows no changes in ignition/fuel specs. The car ran fine for a while with current set-up and is progressively getting worse with these symptoms. Code 1514 gets set if I leave the 1514 table stock. I cleaned the maf with no change in symptoms. The parts involved, I beleive are MAF assembly,TAC module, and the TB. I suspect the TP sensor but don't know how to test it for proper performance. The title of cheif TP sensor tester goes to the person that solves this puzzle as well as my gratitude. :skep:
Safety Car
Joined: Mar 2002
Posts: 4,928
Likes: 1
Cruise-In V Veteran
St. Jude Donor '09
Re: How to test throttle position sensor? (SpinMonster)
TPsensor is on a 5V reference circuit. Max output is 4.6V (from ls1tech). You should be able to log voltage of TPSensor with Autotap. Hope this helps some. :yesnod:
Racer
Joined: May 2000
Posts: 321
Likes: 0
From: Valencia, Los Angeles CA
Re: How to test throttle position sensor? (SpinMonster)
My car is stumbling during cruise speeds during minute changes in throttle. This occurs even with cruise control engaged. Autotap shows no changes in ignition/fuel specs. The car ran fine for a while with current set-up and is progressively getting worse with these symptoms. Code 1514 gets set if I leave the 1514 table stock. I cleaned the maf with no change in symptoms. The parts involved, I beleive are MAF assembly,TAC module, and the TB. I suspect the TP sensor but don't know how to test it for proper performance. The title of cheif TP sensor tester goes to the person that solves this puzzle as well as my gratitude. :skep:
