sorry for the ranting in advance *mumble*
Well, another day; another attempt to fix failed.
Computer can now be ruled out as the reason for my 325's rpm issues. Still the same; car will not hold between 1200-1800 rpm. It holds for about 3 seconds, then rpm drops to 1200 for a second (almost as if you turned off the car) then jumps back up & repeats. At 2000 rpm's there is a noticeable miss; but no drop in rpm and anything above & below seems fine. Car accelerates strong and doesn't show any driveability issues.
plugs, coils changed, cams checked for timing, all seals on intake replaced, repeated checks for vacuum leaks, sensors checked for resistance & voltage, now computer swapped out
Now what is the most baffling to me is why in the blue hell won't the car tell me what's wrong??? Surely to god the car can't think that everything is fine, and obviously there is something horribly wrong; a sensor or something that is failing; or something is installed incorrectly from when I put the head on months ago. (the problem's been there since day one BTW)
But scans of the car don't show any codes!!!!
WHY! WHY! WHY!!!!
I'm going to do a compression test on the car tomorrow & see if maybe I pooched the head gasket on installation. I haven't seen any signs of coolant in the oil; but there is some condensation coming through the tailpipes. Just looks like carbony water; not oily residue. No overheating issues thus far & doesn't seem to be losing any coolant.
Would the head gasket even cause this type of a problem? or will this be another wasted weekend