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I'm back like a bad penny.
My Actron CP9125 came in today and I have seven (7) fault codes.
These are the codes: P0455, P1411, P0410, P1126, P1124, P0154 pending, P0134 pending.
I've had the some of these codes for a long while (those codes dealing with the gas vapor canister). According to my mechanic, I need a Shut Off Valve and a Purge Valve. Estimated cost is $1,600. I don't live in the People's Republic of Austin/Travis County so I can live with not fixing the gasoline evaporative system.
I've looked up all the codes in my Bentley manual and cannot figure out what I need to fix my problem (engine starts, but backfires, idles very roughly and will not drive down the street without dying on me [it is a Tiptronic]. I also personally changed out the two pre-Cat 02 sensors at 295,145 miles.
All of this rough idle and backfires took place before I changed the plugs and coils. I changed them thinking that would solve my problem.
What are your thoughts before I tow my 99 Boxster to the mechanic?
Thanks
MNC-I
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