Running rich question ???
Hi, I was wondering if a hollowed cat can make a car run rich ? I ask this because my
donor car ran rich before i took it apart. When i removed the exhaust i noticed
all the ceramic material from the cat. had broken off and got pushed back into the muffler.
I read up on how the CTS sensor is a common failure on these engines and can cause a rich condition,
however I noticed the PO installed a brand new CTS. The car would only run for a while before it stalled and I
would have to wait for it (45 minutes) before it would start. i also found out that by resetting the PCM the car would
start up and run for about 5 minutes then it would do it all over again. Any comments would be greatly appreciated .