abyssius
CEG'er
In a seemingly never-ending effort to clear the CEl and more importantly to get my 2.5l Duratec V6, ATX Mystique to pass NYS inspection, I've so far initiated the following repairs:
(see attached), which advised that when codes for both banks are triggered it is rarely bad sensors. It advised me to disconnect the MAF sensor and try driving the car. Doing so noticably improved performance, and I had already tried cleaning the MAF sensor, so I purchased a refurb ($77.00). I removed the bank 2 downstream sensor, which was obviously no good. I replaced both downstream O2S (@$48 ea.). After clearing the CEL, It returned again after a little drive. At that point I took the car to a repair shop.
They charged me $150.00 to read the codes, supposedly do a fuel pressure check and a 'smoke' test. They told me the fuel pressure was okay but I had massive vacuum leaks (LIM/UIM gaskets and just about everything else according to them). They quoted me $1000.00 to repair the vacuum leaks, etc. and would not even guarantee that the CEL codes would clear. I paid up for the diagnosis and did the repairs myself with the aid of the excellent 'how-to' provided on this site.
Wow! Huge improvement in the driving and idle smoothness. I'd forgotten just how nice the car ran when it was new. However, after a day of mixed driving the CEL lights up again. This time it's reporting the following codes:
- New MAF sensor (cleaning didn't clear original codes)
- New UIM/LIM gaskets
- New F/I O-rings
- New Gaskets for TBI, EGR, IAC
- New post-cat O2 Sensors (banks 1 and 2)
- New Spark Plugs
- New fuel filter
- P0141
- P1131
- P1151
(see attached), which advised that when codes for both banks are triggered it is rarely bad sensors. It advised me to disconnect the MAF sensor and try driving the car. Doing so noticably improved performance, and I had already tried cleaning the MAF sensor, so I purchased a refurb ($77.00). I removed the bank 2 downstream sensor, which was obviously no good. I replaced both downstream O2S (@$48 ea.). After clearing the CEL, It returned again after a little drive. At that point I took the car to a repair shop.
They charged me $150.00 to read the codes, supposedly do a fuel pressure check and a 'smoke' test. They told me the fuel pressure was okay but I had massive vacuum leaks (LIM/UIM gaskets and just about everything else according to them). They quoted me $1000.00 to repair the vacuum leaks, etc. and would not even guarantee that the CEL codes would clear. I paid up for the diagnosis and did the repairs myself with the aid of the excellent 'how-to' provided on this site.
Wow! Huge improvement in the driving and idle smoothness. I'd forgotten just how nice the car ran when it was new. However, after a day of mixed driving the CEL lights up again. This time it's reporting the following codes:
- P1131
- P0171
- P0174