Originally Posted by CamaroJoe
Stock cam as far as I know (the the timing chain was old). Only mod is a TB coolant bypass and my idle was just as rough before I did that. TPS was around .6 volts I think. It has been a while, but I remember it was in spec. It did increase and decrease steadily. Is it possible to maybe have a valve guide leak bad enough to cause a bad idle like this? What can I do to test for this? I know I'm really fishing here but this is getting on my nerves.
i know when my valve guide seals got bad the oil killed my o2 every few months, i'd replace it and it would run better.
new seals and it never ate an o2 again.
as for something i'd try next if it was my car would be the pick up coil in the dist and replace the timing chain.. . the coil is cheap but you have to put the dist apart to change it and the chain sucks to do but will need it anyways if you plan to keep the car for a long time.