I posted before that it seemed fuel was getting into the oil. We did a compresion test and all cylinders were fine. Ran diagnostics and found the car is running very rich. Replaced the O2 sensor and the car is still doing the same thing. Alot of carbon exiting the exhaust tips... Whats the deal? Computer? The car is still running like ****... any help would be appreciated! Thanks

 

check your fuel filter, fuel pressure and see if the regulator is leaking into the vacuum line. monitor the sensor parameters using a scantool and see if you have abnormally high pulsewidth. check map/maf readings, coolant temp readings, etc.

 

We hooked it up to some OTC thing that read all that. Everything was normal except the O2 cross which was reading 000. Didn't check the fuel filter and that so I guess its next. Thanks

 

Red42,

You'd better take a closer look at the O² sensor. Those "null" counts shouldn't be there. Did the new sensor get plugged in? Is it grounded well (is the exhaust system grounded)? Does the wire appear melted or damaged? Something isn't right with that sensor or wiring.

 

The sensor reads untill the car gets up to temp. and then sticks at 0.

 

hmm 3 things i'm thinking of, bad o2 sensor bad wiring or computer i dunno..dont take my word for it but 0 isnt right:lala: