So I have an automatic '99 Subaru Impreza L with 180,000 miles (California spec but that only makes things more expensive, otherwise much the same) with some really nasty bogging just off idle. Here’s what’s going on: The car will idle fine and once it’s above 2000rpm will run fine and dandy, but when it’s at idle and I hit the throttle it just about dies. The idle will drop a bit and then won’t budge; to get it rolling I have to quickly pulse the throttle. Once it’s been at operating temp for a while it will get better but I’ll still need to pulse it a couple of times to get it going from a stop.
For what I’ve done, I replaced the MAF which fixed nothing, looked for and found no vacuum leaks, then I tested the throttle position sensor which was fine, then I replaced the MAF again since it was reading high all the time and showing about 3g/s with the engine off and ignition on and I figured it may have just been a bad one I picked up. Well that fixed nothing either.
So now I’m on my second MAF showing the same faults and have no idea what’s going on. The dealer’s next step is to replace the ECM And that’s $700 I’d rather not spend on a $2500 car.
Any clues?
Thanks