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Hey Guys. For the last week or so my engine has been doing a wierd a sort of shudder when at idle. The engine will be idling nicely at ~750 like normal and then it'll drop a little and make the car shudder and then it will surge back up to about 900 then drop to 750, stay there for a bit, and then drop and shudder and do it all over again. Logically, it shudders more often and harder when I have the AC on. I had it idling in the driveway and it did it, but it does it worse when actually driving it. The oil is good and right on the mark, same with tranny fluid and coolant. I checked my CAI and everything looked good and I don't think there was anything wrong with it in terms of oil getting on the wire. So I'm rather baffled. I have yet to pull the plugs though, but I did change them at 30K and gapped them all right at .044". It also doesn't seem to have any lose of power when actually driving it, just a shuddering and low idle.
I've got no CEL light, but would it maybe put a code into the computer but it's not bad enough to throw the CEL light but reading the codes would show something's not right? I'm also getting slightly worse gas mileage, which may or may not be linked, but if it was, I would think that it would cause a problem all the time (like a missing plug) and then throw a code. Any thoughts guys?
-mobiuslogic
I've got no CEL light, but would it maybe put a code into the computer but it's not bad enough to throw the CEL light but reading the codes would show something's not right? I'm also getting slightly worse gas mileage, which may or may not be linked, but if it was, I would think that it would cause a problem all the time (like a missing plug) and then throw a code. Any thoughts guys?
-mobiuslogic