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Rough idle after o2 replace and rebuild

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TrystanGST

15+ Year Contributor
573
1
Jul 29, 2004
Chicago, Illinois
A quick run down -

The car broke it's timing belt a month ago and bent 10 valves.

The head was rebuilt, and I put in many other new parts, including a 1G CAS.

After chasing down some blown fuses, I got the car started. It idled at @700RPM and Link showed no error codes, but the o2 voltage was flat at 0.04v. Shortly after, the DTC 0135 came on, and I knew it was time for a new o2.

I replaced the o2 and now when the car starts the o2 voltage climbs to 1.02v, but the idle is down to 450-500. If I give the car gas, the engine responds, but once the revs drop below 2000 the car bogs and will stall if you don't keep your foot on the pedal.

A few other notes - idle switch parameter reads 0-, and the throttle reads 5%.

I plan on doing a BLT, as well as looking for what sounds like an exhaust leak I hear coming from under the upper heat shield.

Am I on the right track?
 
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