TPS and Coolant temp problems, also ground on mas

[dls93tsi]

I just completed a GM MAF install yesterday, and my car runs good, except the Throttle position sensor is always reading 100%, and the ecu is reading coolant temp as -68*C or something blatantly wrong like that...When I hooked up the MAS, I was having trouble with the ground, so I ended up just disconnecting the ground wire and adding it into another ground screw in the fenderwell, near the fusebox. Could this be related to the other 2 sensors not working correctly, and if so, does anyone have any suggestions on how to fix it?....

Also, could the TPS problem lead to an idle surge, or should I assume its the usual culprit(BISS, ISC)

thanks
-dylan

 

[steve]

Sounds like the sensor ground on your ECU might be blown. Check between pins 24 and 101 at the ECU. If you don't read 0 ohms then it's bad and will need to be repaired.

Steve