miss at 65 mph
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miss at 65 mph
Sirs:
Chevrolet 454 cid with electronic ignition, 1991. When engine is cold runs perfectly. After engine warms up it has a serious "miss" at 65 MPH. Slowing down or speeding up will cause the engine to level out and the miss seems to disappear. I replaced the oxygen sensor a few weeks ago per a set code. There are no other set codes in the readout.
Any suggestions?
Thanx
Chevrolet 454 cid with electronic ignition, 1991. When engine is cold runs perfectly. After engine warms up it has a serious "miss" at 65 MPH. Slowing down or speeding up will cause the engine to level out and the miss seems to disappear. I replaced the oxygen sensor a few weeks ago per a set code. There are no other set codes in the readout.
Any suggestions?
Thanx