Oh crap. What should I do? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Mike_Yi · 10-24-2010, 12:52 PM

I hooked up the AutoTap today. Even though it doesn't show a whole heck of a lot on this car, it did show me two codes. I'm getting
P1313 - misfire, cylinder 1, emission relevant
P1316 - misfire, cylinder 4, emission relevant.

So at least I know the cylinders involved right now. I still have no CEL, and it seems to be running fine now. Looks like I'm going to have to swap the wires and plugs and see if I get any more problems. I'm a bit worried that I'm not going to find anything since the car is running fine again.

Do you guys think it could have been bad gas? I filled up just before I got to the track. So I probably drove about 30 miles after filling up before the problem. I filled up again when I got home and haven't driven it much, but probably about 30 miles give or take.

Mike_Yi · 10-27-2010, 04:33 PM

Well, it died today. I've had to drive it to work even though I haven't fixed the problem. It's been running fine though (I've been avoiding high revs). Today, on the way to work, it started running rough at lower revs. When I exited the tollway and pushed in the clutch, the car died. I restarted it and it just ran rough. Something was making a squeaking noise (it sounded like an exhaust shroud squeaking). I turned off the road, shut it off, and coasted to a safe place. Waiting for a tow truck now.

The plugs are 4,000 miles old, the MAF and O2 sensors are about 15k miles old. Not sure what I'll find out.

Reborn996 · 10-30-2010, 03:34 PM

When you changed the plugs did you do coilpacks too? How many miles on your car? If you have 40k or more and are on the original coilpacks I would have them changed. I have had two other Porsche's (996 and Cayenne) with higher miles and in both cases the coilpacks were shot. I do not think they are that much money and should be considered a wear item every 40-60k in my opinion. When they start to go it can be very intermittent and it is just better to replace them every couple of years. IMHO

eightsandaces · 10-31-2010, 03:22 AM

How old are the O2 sensors? Did you google those codes to see what other people did to resolve them?

Mike_Yi · 10-31-2010, 08:16 PM

I did not change the coilpacks when I changed the plugs at 60k. It's got 63k now. The O2 sensors are about 15k old, same as MAF.

A set of coilpacks are almost $300! That's not like changing the wipers.

eightsandaces · 11-01-2010, 05:02 AM

Quote:

Originally Posted by Mike_Yi

I did not change the coilpacks when I changed the plugs at 60k. It's got 63k now. The O2 sensors are about 15k old, same as MAF.

A set of coilpacks are almost $300! That's not like changing the wipers.

Wouldn't a port reader direct you to a certain coilpack to inspect? Have you pulled the plugs again? An inspection of the plugs might give you a lead on which cylinder is firing unlike the others. Three bills does sting but look at it this way, if you have to play a bit of "replace and pray" at least it isn't at $100.00 an hour with someone who doesn't love your car wrenching on it.