Stalling and Rough Idle

[ZoomGlide125]

Yeah I'm worried that it's a vacuum leak problem too. I never even thought of making my own smoke machine. I'll look into that.

You're exactly right I mistyped and mean misfire. When I first had the problem it gave me:

P0300 - Misfire damaging to cat. converter and
P0301-P0304

The last time I fired it up it gave me:

P0300 and P0304-P0306

No MAF or O2 sensor codes and sometimes no codes at all.

[thstone]

Originally Posted by ZoomGlide125

P0300 - Misfire damaging to cat. converter and
P0301-P0304

The last time I fired it up it gave me:

P0300 and P0304-P0306

First, misfires on cyls 1-3 and cyl 4.

Then, misfires on cyls 4-6.

The most common cause of misfires are coil packs, spark plugs, air leaks, MAF, and/or engine sensors.

The hunting idle does suggest an air leak but you said that the car actually backfires which implies a timing issue and that is usually related to an engine sensor problem.

[ZoomGlide125]

Originally Posted by thstone

The hunting idle does suggest an air leak but you said that the car actually backfires which implies a timing issue and that is usually related to an engine sensor problem.

Roger that. I'll keep hunting around. Upon further investigation after work I tried to pop off the oil filter cap and noticed it had no effect in the cars idle, it continued to idle rough. Looking around under the throttle body the flexible filler tube doesn't seem to be leaking but where the hard L shaped tube goes into the crank case is covered in oil and gunk. I ordered that and a new O-ring to swap out. Could that be causing enough of a vacuum leak to cause my problems, or is this just something else that needed to be fixed?

[ZoomGlide125]

Roger that, I'll keep digging around. Upon further investigation after work I tried popping off the oil filter cap while the car was at idle. It didn't change how the car was running at all, idle continued to hunt and didn't get any worse. I looked harder under the throttle body and found that the hard plastic L shape tube that goes to the crank case was caked in oil and grime at the engine. The middle tube didn't seem to be wet or dripping from anywhere. I ordered a new tube that goes into the engine and a new O-ring to put on. Any ideas if this could be causing the idle and stalling problems I have? Reguardles it needs to be replaced and cleaned up, I'm just hoping this will fix the problem.