Engine Performance problem
1991 Chevy S-10 6 cyl Four Wheel Drive Manual 250000 miles
My truck starts up well, idles, and seems to drive (afraid to really take it out since this started) normally until it warms up. After about 10-15 minutes, it suddenly begins to idle very rough, with rpms going up and down, and black smoke coming out the tail pipe (and I think from holes in muffler too). When throttle is applied, the engine just sputters hard and eventually quits. The next day, it will start and run fine briefly as already desciribed, with the same things happening again. The "Service engine soon" light is on throughout. I have a feeling the catalytic converter and/or muffler is shot, causing some type of restriction when warmed up. I would appreciate some input from professionals on this, however. Thanks very much in advance.
have the same problem?
Monday, September 28th, 2009 AT 8:23 PM