Test new TPS while fully installed?
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Freshman User
Joined: Mar 2015
Posts: 36
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From: Huntsville, AL
Test new TPS while fully installed?
I replaced my TPS today and need to test to make sure it is within range. Do I probe it after fully installed, or can I just back probe while out and is just connnected at the harness so I can move it as needed? Also, can I use a safety pin to back probe it so I don't have to puncture the wires? Thanks!
Fleet Mechanic
Joined: Jan 2013
Posts: 1,305
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i can't help but wonder why you didn't test the original, and why you are replacing it . what symptoms were you experiencing and why all the coolant and vacuum lines disconnected ? it's like wandering into the middle of a repair, but not knowing what is being repaired.
also, what engine are you working on and what year ?
also, what engine are you working on and what year ?
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Freshman User
Joined: Mar 2015
Posts: 36
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From: Huntsville, AL
I got a code 122 and tested low voltage at the TPS at the dealer, so I was trying to save money by installing it myself. I disconnected them so I could clean the throttle body gain access to the TPS. Hard shifting, hard starting, rough idle.
Fleet Mechanic
Joined: Jan 2013
Posts: 1,305
Likes: 8
sounds like you may be on the right track then.
a bad circuit could also generate that code, so check wiring and connectors if replacing the TPS itself doesn't do the trick.
a bad circuit could also generate that code, so check wiring and connectors if replacing the TPS itself doesn't do the trick.
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