Intermittent Misfire 1995 Metro LSI 1.3L
My engine runs well most of the time, but I get intermittent roughness. It will idle smoothly for, then hiccup. It occurs most at idle rpm, but somewhat at higher rpm. I also get a 51 EGR code. Checked out the EGR, cleaned it and replaced everything moves freely. EGR is vacuum controlled and vaccuum comes from intake manifold to a three-way solenoid valve then to the EGR Modulator, then EGR. Cleaned everything, but cannot tell if 3-way switch is working. My Hayne manual give little info on this switch. Performed a full tune-up (plugs, wires, cap, rotor, coil, fuel filter, belts, etc) plus compression check and timing belt, but no change. Went to Precision Tune and they said I had an Intermittent drop on cylinder #4 and needed a new distributor. New distributor made only a marginal difference. It has 168K mi
Last edited by RBlackmon : 06-27-2008 at 12:27 PM.
Reason: better detaio
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