Engine Performance problem
1997 Chevy Blazer 6 cyl Four Wheel Drive Automatic 180000 miles
Bought with leaking intake gasket and running really rough. I changed intake gasket, plugs, wires, distribitor cap, and rotor. Ran good for a few days and then started cutting out while driving at 55 to 60mph, felt like a miss. Watched data stream on scanner and didnt notice anything abnormal. Had codes p0300 engine misfire and p1509 iac. Clear the codes and will return. Now starting to run rougher notice at slower speeds also. It doesn't cut out constantly. Idles fine and while cutting out u can accelerate more and will smooth out and go. I haven't changed the iac valve yet, because didnt know if it would affect it at driving speeds since idling fine. Cant find any vacume leaks no where and dont know where else to look. Any help would be appreciated.
have the same problem?
Sunday, January 31st, 2010 AT 10:32 AM