My room mate bought the cable and plugged it into a Palm Pilot today and we ran a scan on my car. Heres what it came up with.

P0154 - O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0155 - O2 Sensor Heater Circuit (Bank 2 Sensor 1)

P0302 - Cylinder 2 Misfire Detected

P6704 - Unknown

P0004 - Unknown

P0316 - Unknown

Im sure a few are from my headers and all my emmisions delete. But that third one sounds bad. Cylinder 2 misfire?

 

Those unknown codes don't pop up anywhere. Scan the car again. Here is the GM site for code definitions. Save it for future reference:

http://service.gm.com/gmspo/mode6/index.html

 

That's good for OBD-II, but is there a listing for OBD-I as well?

There is a link in my sig for f-body specific trouble codes 93-97.

 

The O2 sensor codes should be investigated. Those codes refer to the upstream O2 sensor not working properly. That O2 is used by the PCM for fuel mixture management and if isn't working properly, the engine isnt going to run properly.

For the misfire code, check the spark plug and wiring to cylinder #2 (front cylinder, passenger side).

 

I've looked for one, but can't find it. GM probably has it somewhere. Maybe someone else will find it.