1991 chevy s-10 4 cyl 2.5 vin code E running very rich. I replaced the oxygen sensor, coolant temp sensor, map sensor and air sensor in the intank manifold. I can uplug 3 sensors and make it go into open loop and it runs good, but fuel economy suffers. The tailpipe is shooting out black smoke indicating the running rich, any help is appreciated.
have the same problem?
Thursday, January 6th, 2011 AT 1:57 PM