Ray K

97 1.8T with PES T-28. Every morning the car seems to misfire underload until it warms up. It idles fine and initially it runs O.K after a couple of mins into my moring drive it starts to misfire for a minute or two and then everything is O.K. VAGed the car, no codes. Changed the plugs and have order a new POS. Hopefully that solves the problem as I had an issue with misfires at idle a while back in cylinder #1 but the problem just went away.. testing back then pointed to the POS and not the coil packs or plugs.

any other thoughts??

RKA

When was the last time you changed the rubber boots below the CP's?

Ray K

Never.. you can buy these separately? One did look at little discolored now that i think about it.

RKA

Yeah...relatively inexpensive, and a good thing to replace before you bang your head against a wall.

StevenH

I've switched the plugs, messed around with their gaps, and I actually just got back from the dealership to do the coilpack recall and was informed informed my packs weren't recalled.

Ray K

I've done all the same. Intermittent problems are the worse to find. Hopefully, its the POS that is going since I ordered a new one.

StevenH

Yes, I'm a drive by wire. Sorry for the ignorance, but what does POS stand for?

Ray K

In DBW cars the POS unit is built right into each coil pack. However, if the POS is my problem then it might point to your coil packs being the cause of your problem as well. Just a guess. :^)