Dryslick13

RngTrtl

Here is the service schedule.
https://gaudinporschelv.com/images/d...oxster_986.pdf

Mark Wilson

Why would you replace coil packs for any reason other than one went bad?

jhbrennan

They are plastic and tend to crack with age and then water intrusion may become a problem.

Warehouse33.net

When you're ready to do your ignition coils and spark plugs, here are the links to purchase.

https://www.warehouse33auto.com/BERU...997-602-107-02

https://www.warehouse33auto.com/cata...ion-Spark.Plug


-Jason

Mark Wilson

I know they go bad - I had one fail a couple years ago in my 99. I just don't quite understand why you'd want to preemptively replace a perfectly good working part. I keep an extra new one on hand and will replace when needed. Different strokes, I suppose.

Dryslick13

Cosmo Kramer

I like the maintenance schedule from Porsche, oil change every 15,000 miles, filter change not necessary lol.

For coils my experience with cars that have COP is that they can fail in two different ways. One way they will "lightly" misfire under load at low rpm and never throw a check engine light but will impact drivability. Very hard to diagnose which one, in this case I do them all. If the car has been running fine, then one fails completely and throws a CEL, I do just the one.

Mozella55

I just changed plugs and coil packs on my 2013 Panamera at 103,000 miles. It's new to me and has had regular service, but I don't have all the details. Many just say "Required Service Performed", so no telling when the plugs were replaced. A missing screw on one of the covers hint that they were changed, but I have no proof. They looked pretty good, so I doubt if they're original. No telling about the coils. I suspect they indeed are original.

Anyway, a spirited test drive indicates to me that the car starts more quickly and runs more smoothly. More power? Well it seems like it, but I also did a nice wash job today too, and we all know that cars run much better just after cleaning, so I suspect it was just the wash job. Still, the shifts seemed smoother and I'm pretty convinced that the new plugs and coils made some kind of difference. I checked for codes before and after; ............. nothing. So I'll have to agree with your comment about driveability.

wyovino

That's for MK-II cars. For some reason MK-I cars are due at 37k miles (60km).

I replaced my 20 year old coils at 75k miles and the old ones were still perfect. I figured I would change them as I was already in there and the were 20 years old. They're not very expensive if you buy them right. Warehouse33 is a great source.

sgt1372

It's called "preventative maintenance."

When I bought my 2008 BMW 335i, I pretty much replaced EVERYTHING, including the tires, brakes and plugs/coils because I wanted to give the car a fresh start. Ironically, one of the new coils that I received was "bad" and had to use an old one to keep the car running. Got the replacement later and just put it in the trunk to use if another one goes bad. The "old" coil has been functioning just fine w/the other 5 "new" coils for the past 8 years. LOL!

I just replaced the 8 yr old battery (actually there are 2) in my MB ML350 because I know that batteries tend to die around 7-8 years and the battery in the ML350 is stupidly placed under the passenger seat, which requires removal of the seat and is NOT something that I can or want to do easily myself. I've replaced a lot of batteries in my time and if I can get to it myself, I'd do it myself but in the case of my MB, it was just better to replace the d*mn thing before it actually died.

I also routinely change the oil/filter in my cars annually, even though I drive most of them (5 out of 6) only 2-3k miles/yr and the other (the MB) I barely drive 5k miles/yr. There's no reason why I "need" to change the oil/filter that frequently especially using modern synthetic oil but I just think it's the right thing to do and it certainly can do no harm, except to my pocketbook which is thick enough to cover these routine expenses.

dporto

Or you can do as I did... Start getting crazy misfires (O2 codes, MAF code and all cylinders) and CEL in June. Change out MAF... change out CPS... Check clean and tighten all grounds (I even added one on the bank 1 side). Trace all connections to coils, injectors and sensors for continuity - check... All the while, after each procedure, I’d test drive the car for 10-15 miles to see if the symptoms returned... As soon as the car reached full operating temp (usually around 8 - 10 mi.) it would start to misfire. Eventually, I broke down and ordered both coils and injectors, but didn’t install them right away because I was busy with other things. Finally, the last week of September and at my wits end I decided what the heck, let me throw the coils in... Guess what, it worked... wow, almost 4 months and it was the coils all along (though cleaning and tightening the grounds may contribute to the longevity of the new ones)...The moral of the story is: if you start getting random debilitating misfires across all cylinders, change your coils (all of them). 😉

KNS

I got an interesting comment from a BMW mechanic about coils a while back...

On my 2004 BMW 325i I change the plugs about every 50,000 miles. The car currently has 238,000 miles (I'm the original owner). I asked the mechanic if I should change the coils because they're original, never had any issues. He asked how often I change the plugs and I told him. He said "that's why your coils are still working fine". He said that as plugs age they can make the coil work harder (the ECU is telling the coil to maintain the same spark intensity - or something along those lines).

Not sure if it's true but 238,000 miles on six original coils it must account for something.

NYoutftr

I changed plugs and updated my coil packs to 997 part number @ 60,000 miles.
The car was nearly 15 years old at the time, seemed logical to do, look at it as preventive maintenance.

-David

motoo344

I did mine over the summer because I had no records of when they were done. I didn't see any cracks on the packs and the plugs looked okay, one was a little damp from the tubes but looked okay otherwise. Given that its a Porsche its relatively cheap to do, probably do it every few years rather the mileage.