CEL, 02, Exhaust problems....



xposigroovex

New Member
5+ Year Member
#1
A few days ago my CEL came on. I disconnected the battery and it went off. I figured it was a fluke. It came back on today. The code I got from the dianostics test is p0420. I know this can be 02 sensors, cat, or a leak somewhere. I figured I would try to clean the first 02 sensor. When I took the heat shield off I saw a hairline crack in the exhaust manifold. Also the sensor wouldn't budge and with the day I've had I put the s**t back on and said f**k it. One of the bolts was broken off the heat shield which leads me to believe the 02 sensor has been replaced already. I have only had this car for 3 weeks but the people before me took good care of it. So now I am thinking the problem is the cat or that hairline crack...anyone have any advice before I take it to a shop?
 


xposigroovex

New Member
5+ Year Member
#2
Disconnected the battery again and it's off but the idle seems to be a lot lower now. WTF?!? I'm just gonna take it to a damn mechanic.
 

xposigroovex

New Member
5+ Year Member
#3
Driven it some more, idle seems fine now. I'm gonna check on a warranty for the manifold but just keep driving it.
 






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