Quote:
Originally Posted by pmohr
Your buddy is incorrect, a KS will not cause a misfire or misfire feeling.
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I just got done replacing the PCV valve and its hosing after a trip to autozone for new hose. Looks like it may have been the original so that hosing was quite fragile. Definately no rattle when I shook the old pcv valve. The exhaust is pushing out a small amount of smoke now that it is replaced.
The start up idle was certainly higher but over time it settled, which was fine.
I tapped the MAF earlier, small at first and substantial later, and no change in rpm.
Regarding the knock sensor: I diagnosed a knock and circuit signal problem but that was because I left a coil pack unplugged. I pluged it back in and cleared the ECU and no more codes about 20 hours later. However, OBD II from autozone is pulling a knock sensor code when I had them run it earlier. The ECU was cleared about 3 AM and the OBD II run about 4 PM
Muffler needs replacing and still need to do the fuel filter but if the muffler is corroded or any exhaust corrosion/leak would that cause any back pressure issues causing occassional misfiring?
I've been trying to listen to the exhaust to try and hear misfires but it sounds pretty clean even if I can feel them in the cabin.
Also, I'm going to be replacing belts soon enough just because I don't know when they were last replaced, including timing.