Strange TPS problems
Thread Starter
Instructor
Joined: Nov 2000
Posts: 185
Likes: 0
From: Finland
Strange TPS problems
Hello Everyone
I have problems with my throttle position sensor. I adjust it to 0,52v and then I go for a drive and then maybe after 1 hour of driving i get service engine soon. I check it and it is TPS to low and sometimes it is TPS too high. I adjust it again to 0,52v and the after 1 hour or next day it is the same problem again. And I know it is not the TPS that is moving from position.
What can be wrong, im getting crazy with this poopie
best regards
Tomas
I have problems with my throttle position sensor. I adjust it to 0,52v and then I go for a drive and then maybe after 1 hour of driving i get service engine soon. I check it and it is TPS to low and sometimes it is TPS too high. I adjust it again to 0,52v and the after 1 hour or next day it is the same problem again. And I know it is not the TPS that is moving from position.
What can be wrong, im getting crazy with this poopie
best regards
Tomas
Drifting
Joined: Jul 2001
Posts: 1,897
Likes: 0
From: La Fontaine Indiana
Re: Strange TPS problems (Tomas)
You say that you adjust it and after driving it you adjust it again is it changing while you drive if so maybe it is slipping if it is holding then replace it
I'm on my third oil temp sensor in just a few months all were GM but they where bad new. They say made in Mexico :mad
I'm on my third oil temp sensor in just a few months all were GM but they where bad new. They say made in Mexico :mad
Instructor
Joined: Apr 2003
Posts: 102
Likes: 1
From: Cuba Mo
Re: Strange TPS problems (Tomas)
I had the same problem and it turnd out it was slipping no matter how tight. Take ta piece of fine grit paper (I used 1500) and cut you two pieces and place them back to back between the TPS and the intake so one rough side is against the TPS and one against the intake. Run your bolt through and snug them down. Fixed my problem now for over a year.
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
Re: Strange TPS problems (85alusion)
I had the same problem and it turnd out it was slipping no matter how tight. Take ta piece of fine grit paper (I used 1500) and cut you two pieces and place them back to back between the TPS and the intake so one rough side is against the TPS and one against the intake. Run your bolt through and snug them down. Fixed my problem now for over a year.
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Melting Slicks
Joined: Apr 2001
Posts: 2,122
Likes: 224
From: Ca.
Re: Strange TPS problems (Timmy!)
On krivera's car the max voltage is still less than 1 volt. Isn't it supposed to be like 4 or 5 volts at WOT?
Try testing for voltage at wot at the tps itself-if OK there but not ecm look for a short/open.
Other problem I've seen once-the "reference" (supply) voltage wire was only one volt due to that wire getting pinched before the tps.....
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
Re: Strange TPS problems (drive it)
On krivera's car the max voltage is still less than 1 volt. Isn't it supposed to be like 4 or 5 volts at WOT?
Yea....it is supposed to be above 4 or so....
Try testing for voltage at wot at the tps itself-if OK there but not ecm look for a short/open.
Other problem I've seen once-the "reference" (supply) voltage wire was only one volt due to that wire getting pinched before the tps.....
Yea....it is supposed to be above 4 or so....
Try testing for voltage at wot at the tps itself-if OK there but not ecm look for a short/open.
Other problem I've seen once-the "reference" (supply) voltage wire was only one volt due to that wire getting pinched before the tps.....
