Throtle Position Sensor PROBLEM on, 95 chevy 7.4 ltr

[jcramphorn]

Hi,

Have a 1995 7.4ltr RV thats been running rough for ages, thought it was the timing being set up wrong, but, just pluged it in to diagnostic and it ses 'throtle position sensor (TPS) to higher voltage'
Any one had this before?
is it another problem sending to much voltage to the TPS?
Or is it the TPS itself being faulty?
Am in the UK so not easy to get parts to just start replacing things
Thanks

 

[C Nash]

Re: Throtle Position Sensor PROBLEM on, 95 chevy 7.4 ltr

Most likely the TPS. Ck the sparkplug wires. Wires gave a lot of problems on the 7.4 but this would not cause high tps reading. Do you have ck engine light on? Have you read the voltage reading of the tps from idle to full range? If so what are the readings?

 

[hamdave]

Re: Throtle Position Sensor PROBLEM on, 95 chevy 7.4 ltr

This same prob was posted on another forum and has been resolved. Bad TPS transmitter.

cheers