Anyone know where it is? My girls car is throwing a code. I want to take it out and try to clean it before I go and buy a new one. She had the gasket leak prob, but we got it fixed and I think the sensor may still be gunked up a bit.

Not a 3800. Off to the lounge.

Wasn't sure. After all, the car itself would fall into that cat, just not the engine. Thanx for the move

I would assume it'* in a similar location. Look for a brass sensor in the LIM.

This is for a '98 3400, but I believe it is the same on the 3100.
ECT3400.gif

Thanks. I'll take a look tonight.