I recently replaced the head on my 92, and after buttoning everything up, I've had code 122, along with elevated idle. It's for throttle position voltage too low. Any chance I bumped the sensor at some point? Or is the TPS toast? Thanks for any insight.

 

Gasp! You touched it! You broke it!



Seriously, some of this wiring & plastic & such that's 20 years old is quite fragile at this point.

If you have a meter, you can probably test it (google it).

 

I've got a Haynes manual that briefly talks about testing, and looked at oldfuelinjection.com for the full procedure, and will do that tomorrow. I was just wondering if something simple might have happened with the sensor itself during disassembly/assembly and getting moved around the garage during the repairs. Since I never had a problem before, makes sense something happened while it was apart. Will check wiring, connectors and function.

 

Replaced the TPS, idles fine, no more CEL either. But it seems to be a lot doggier than before. Dunno what the issue is now.