Help with tps 84 regal 5.0

[3.8 to 5.0swap]

• #1

hello, i got a 84 regal with the v8 5.0 iam getting high voltage on my tps, i try to adjust it but the voltage wont go any lower than 2volts, ive checked my wiring for any shorts and the wires seem like they are good any idea what may be causing the problem, your help is always appretiated,thank you

 

[DoubleV]

A bad TPS sensor.

 

[3.8 to 5.0swap]

A bad TPS sensor.

That was the first thing i replaced i changed it twice still got the same problem

 

[Clone TIE Pilot]

Check the reference voltage going into the TPS, it should be about 5 volts.

 

[3.8 to 5.0swap]

Check the reference voltage going into the TPS, it should be about 5 volts.

Yes its 5 volts, i forgot to mention when i swapped in the 5.0 engine on this car i kept the old v6 sending unit on the gas tank the new fuel pump on the v8 has an extra return line that i capped off could that be causing the problem?

 

[Clone TIE Pilot]

No, it would not affect thd TPS, it is most likely bad. Through you might have gas tank venting issues with the line capped off. The factory fuel pump for a 5.0 should be 3 lines, same as the V6.