TPS test bad?
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Mountain Pass
Joined: Aug 2005
Posts: 211
Likes: 0
From: Newark, Ohio
TPS test bad?
I checked my TPS and the low end I could adjust the idle to meet the .9V but the WOT voltage was low(3.5v) Does that mean its faulty? It currently won't idle and barely stays running so I have been trying to decipher whats wrong but this seems like my next part to replace.
Elder User
Joined: Oct 2006
Posts: 840
Likes: 1
From: Poquoson Va.
I just replaced mine yesterday. I was getting two differant codes pointing toward it and would not run at WOT, plus I thought trans was going out. TPS solved it all. Runs better now than the 3 years Ive owned it.
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Mountain Pass
Joined: Aug 2005
Posts: 211
Likes: 0
From: Newark, Ohio
Thanks guys. This thing has been fighting me but I think I'll have it going again after this gets changed thursday. I had my starter go out and the negative battery cable was corroded so it wasn't charging and the it started running crappy. All in the same day. I was waiting on the sky to fall on my head. Thanks for the advise.
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
Sounds like you 5 Volt Supply (VREF) is low. Pull off the plug and check the voltage.
It should be 5.0 Volts to the Signal (ground) return in the same plug.
For more information go to this link.
http://fordfuelinjection.com/index.php?p=30
I hate to say it but it sounds more like a bad computer then a TPS.
It should be 5.0 Volts to the Signal (ground) return in the same plug.
For more information go to this link.
http://fordfuelinjection.com/index.php?p=30
I hate to say it but it sounds more like a bad computer then a TPS.
Thread Starter
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Mountain Pass
Joined: Aug 2005
Posts: 211
Likes: 0
From: Newark, Ohio
I replaced the computer last year. It had better not be bad. I bought a new one not a used one. As I have learned from before, there is no certain test for the computers. I am going to try changing the TPS this weekend and keep my fingers crossed. I'd hate to send this to pasture. I love this truck.
Originally Posted by subford
Sounds like you 5 Volt Supply (VREF) is low. Pull off the plug and check the voltage.
It should be 5.0 Volts to the Signal (ground) return in the same plug.
For more information go to this link.
http://fordfuelinjection.com/index.php?p=30
I hate to say it but it sounds more like a bad computer then a TPS.
It should be 5.0 Volts to the Signal (ground) return in the same plug.
For more information go to this link.
http://fordfuelinjection.com/index.php?p=30
I hate to say it but it sounds more like a bad computer then a TPS.
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