Well, I've been trying to get my P5 back on the road. Started driving it again last week (first time it has been driven since April 2018). Put about 50 miles on it when the check engine light came on and started flashing. Misfire and dead downstream O2 sensor (had mechanic friend check it out). New O2 sensors (went ahead and replaced both since they are old) and swapped coils from my old engine and it seemed to be running well (best since getting car running again).
30 miles later and the CEL is back on solid this time. Car is still running very well. The code is P0420 but I'm getting now misfire codes. I have since put on 200 miles (2 days to work). Checked again and the only code is still the P0420.
Options as I see them.
I can probably handle all of the options except the new header myself (hopefully not wishful thinking but I do have large hands).
If I go header route, any tips/suggestions and are they worth it from a power/efficiency standpoint? I have always had a preference for quiet cars (although I love power and handling). Also, who still offers them?
Any suggestions?
30 miles later and the CEL is back on solid this time. Car is still running very well. The code is P0420 but I'm getting now misfire codes. I have since put on 200 miles (2 days to work). Checked again and the only code is still the P0420.
Options as I see them.
- Replace the Pre cat.
- Replace the pre cat with salvage item.
- O2 sensor cheat mod
- Headers and O2 sensor cheat mod
I can probably handle all of the options except the new header myself (hopefully not wishful thinking but I do have large hands).
If I go header route, any tips/suggestions and are they worth it from a power/efficiency standpoint? I have always had a preference for quiet cars (although I love power and handling). Also, who still offers them?
Any suggestions?