Originally posted by mbb41:
So you don't feel that the TPS could be the culprit? ..



It could be but TB cleaning is cheaper (as a first check) and I think a TPS issue should show a CEL code. Of course, a really dirty TB would too). Do the plugged exhaust test too. Oh and read the recent post by Edmonton on problems with the Zetec too.

Edit. "Anyone know if it could be a clogged cat or how to test?"
For the Zetec.
A good cheap way to test for a blocked exhaust is to remove the upper O2 sensor, and see if the performance improves. Battery needs to be disconnected before uninstalling and installing O2 sensors. Good luck.

Last edited by Tony2005; 11/17/05 04:49 PM.

"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles