Ok, here we go:
Ok, here we go.
1) Remove position 1 HO2 (heated oxygen sensor).
2) Install a exhaust back pressure gauge in the O2 sensor's place.
3) Start the car and let it run.
4) Rev the engine to 2500 RPM's.
5) Watch the gauge. It should not exceed 1.25 PSI.
6) If it doesn't, everything is ok. Replace the O2 sensor.
7) If it does exceed spec, replace the sensor and remove HO2 in position 2.
8) Perform the same process.
9) If the pressure doesn't exceed the spec, check the muffler and resonator for internal failure and the exhaust for amage.
10) If the pressure exceeds spec (1.25 psi) replace the converter.
NOTE: Remember everything you're working with is very hot. Also, I've uploaded pictires of both sensors. Keep in mind, when replacing the sensors, antiseeze should be used on the O2 sensors' threads.
I hope this helps. Let me know what you find.
Thursday, November 20th, 2008 AT 11:01 PM