Idle goes up and down.
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Teching In
Joined: Nov 2016
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Idle goes up and down. Okay I have a 99 z28 m6. I have a problem where the car will drop at idle when the car is at at stop to about 500 rpms. It will almost stall put when I start to go. Then when I am going about 60 mph and put the car in neutral and it will stay at 1500 rpms until I almost come to a complete stop. When im on the interstate sometimes the car will buck for a split second and then go back to normal. I have 2 SES codes. 1 for EGR, but I took that off. And MAP sensor circuitry. I hate dealing with electrical so I don't know where to begin with the circuitry. But could it be the MAP sensor? I just changed it out.
Checked fuel pressure it is at 62 psi.
I just changed the battery, alternator, MAP sensor and fuel filter. Here is a list of other parts I've changed in the past 2 years.
TPS IAVfuel injectorsoil pressure sensorknock sensorsintake gasketsspark plugsspark plug wiresTick performance Master cylinderslave cylindercoil packs
Checked fuel pressure it is at 62 psi.
I just changed the battery, alternator, MAP sensor and fuel filter. Here is a list of other parts I've changed in the past 2 years.
TPS IAVfuel injectorsoil pressure sensorknock sensorsintake gasketsspark plugsspark plug wiresTick performance Master cylinderslave cylindercoil packs
