On a new Edlebroch 70 mm T B , 94-95 model, How do you read/set the voltage. I am very familar with the ones up to 93. Edlebroch tech department just told me 6 VOLTS on the grey wire at idel??? 4.5 VOLTS on a grey/red wire at idel??? I find this hard to believe when I have always used .95 at idel. Can this be correct?
???TPS voltage help
- Thread starter tcmustang
- Start date
ironmedic
New Member
i saw it in a tech manual that its slightly different for a 94/95. i would go find one of those to make sure!
stang&2Birds
Founding Member
Yes, with a NON Ford TB, you should *check* the TPS voltage. Why? Well, because all of the OEM's TBs suck and they do not meet *Ford specs*. 
Also, if you adjusted the idle stop (even with a Ford TB), then you should check the TPS voltage at idle. WOT is set at ~2.5V over the idle voltage. It's set at startup.
The Vref should be between 4.4v and 5.5v.
As long as the TPS is between ~.5v and 1.2v at idle, then LEAVE IT ALONE!
BTW: The TPS is reset at startup AND while the car is running. Around 92/94, Ford added a diag check to see if the TPS voltage was above ~1.4v at idle and always stayed that high. See my sig for the book by Probst. Get it at any decent book store.
Also, if you adjusted the idle stop (even with a Ford TB), then you should check the TPS voltage at idle. WOT is set at ~2.5V over the idle voltage. It's set at startup.The Vref should be between 4.4v and 5.5v.
As long as the TPS is between ~.5v and 1.2v at idle, then LEAVE IT ALONE!
BTW: The TPS is reset at startup AND while the car is running. Around 92/94, Ford added a diag check to see if the TPS voltage was above ~1.4v at idle and always stayed that high. See my sig for the book by Probst. Get it at any decent book store.
stang&2Birds
Founding Member
Awesome color wiring diagram, by TMoss, of the 88-91 stang 5.0 Fuel Injectors, Sensors and Actuators:
http://www.veryuseful.com/mustang/tech/engine/images/88-91eecPinout.gif
http://www.veryuseful.com/mustang/tech/engine/images/88-91eecPinout.gif
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