wyo

2000 c2 with 47K miles on it that i have been driving consistantly for the last 2 years -after a drive home in heavy rain i left it in the garage for about a week due to some really wet weather here is Seattle - - the car was running well when i parked it but today when I started it up it is running really lumpy and obviosly misfiring - flashing CEL Code p0301 - plugs are about 2 years and 20k old, coils are most likely origanals.
any thoughts would be welcome

JayG

Could be a small crack in the coil

If the code comes back, swap coil 1 with 2 and see if the code moves

Hurdigurdiman

don't run the engine when CEL is flashing.
That is definitely a big NO NO..

wyo

Thanks for the replies
how easy of a DIY is cylinder 1 coil replacement ?

Imo000

#1 is on the left side(driver side), closest to the rear bumper. A bit of a PITA to get out.

Arne Klinge

I've switched coils on a 996 and a 997. Thin long, keyboard fingers are very handy when tackling this issue. and also, replace the whole lot when first in there. They will all go eventually.

Hurdigurdiman

You can make room by removing the mufflers. Coils should last more than 45000 miles. I have the originals and I am at 86000. I would only exchange the bad one if it is damaged in any way. They are an expensive item. But that's only my thoughts on the matter. I have the 1999 which has the sleeves around the plugs. It may just be a cracked sleeve and your coil could be ok. Sleeves are cheap but you would need a boat plug to remove the faulty one if yours has them. I don't know if a cracked one would cause a misfire which po301 indicates, but its worth checking that out before spending on coils. If you remove the mufflers as I did changing plugs and sleeves, you may have to break off the heads of the rusty bolts. I soaked mine overnight but they still broke as I attempted to remove the bolts. Easy enough to replace from a good hardware store. I would not attempt to run an engine which has a flashing CEL. Well not until I had found the problem.

williamr91

Would a spark plug tube being cracked cause a misfire? Just curious, in case the spark plug &/or the coil pack are not the issue.

DTMiller

Yes, especially in the wet.

williamr91

^ add that to the possible cause, they're cheap like 11-15 bucks. I'd switch the coil pack first, if the other cylinder pulls a code it's prob the coil pack, if not, plug or s/p tube.

Imo000

The coil has to come out anyways. Once it's out, you'll know if the tube is cracked or the O rings are leaking.

mattie_k

I did coils, tubes and plugs at one time, while you are in there kinda job.

williamr91

Good point IMO and Mattie.

wyo

I attempted to remove and replace the coil on cylinder 1 and had to accept that it was to tight of a space for me , I did not want to remove the muffler
so I had a local indy look at it - their computer pulled multiple cylinder misfire codes so they recommended replacing all of the coils.
I agreed and they say the car is running perfectly now.
I will pick it up tonight and drive it myself to verify
Thanks Again for the help

Vancouver996

If you've got one and the car is on it's original ones , you might be best off to do all 6

Warehouse 33 has a great price on them http://www.warehouse33auto.com/parts...16/14/0/7060/0