Question about Cars & Trucks
My chevy cavalier is running really rich and not giving any code. I have replaced the o2 sensor and map sensor. The exhaust is also smelling like sulfur and spitting out black stuff as well.
The catalytic converter probably is failing. If you can pass inspection without it, you can save a lot of money by having it bypassed.
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
You need to Replace the Catalytic Converter. That is what you are Smelling. It has Clogged up and will also Cause the Light on the Dash Problem. Please Rate My Response! Thanks!
Posted on Feb 01, 2009
Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.
Posted on Mar 08, 2009
Black smoke is usually unburned fuel. P0171 reads bank 1 system too lean. There isn't one answer. You need to dig further and inspect your cars fuel system, from the pump to the injectors. Because of the mileage you may want to start off with a compression test just to see where you stand with the motor. write back if you have any other questions.
Posted on May 14, 2009
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