Howdy all,

I have a 2002 C2 with 45,000 miles, and it has only ever had oil/filter and brake fluid changes. I’m planning on doing an air filter and transmission oil change, but I imagine that plugs couldn’t hurt just because of the age. Would you swap your coils while you were doing it, or just leave well enough alone?

She’s never been driven in the rain, always stored indoors, so things LOOK great, but plastic does get brittle... Anything else you’d be anxious to swap out just because of the age?

Thanks!

 

IMSB, AOS. WP

 

@45K probably don't need new coils, but if it were me and I was changing out the spark plugs, I would just put in new coils. Make sure you get the upgraded 997 coils.

 

It had a new OEM part installed at 30,000-ish miles when they put in a Pedro’s Garage direct bearing oiling kit. Same concept as “the solution,” but without a change in bearing design... They also claim zero failures after installation of their kit, so I’m just going to let it riiiide.

Plus the original was 100% perfect, so it doesn’t seem like this car would have been part of the failure demographic anyways.

It also has a new water pump. Outside of the above, 100% original fluids and parts.

 

If your doing plugs....yeah, do the coils. They are 230 bucks for the upgraded coils from ECS (cheapest I found a month ago).

A word of advice. If you don't want to hate your life just get new exhaust bolts and clamps now in stainless steel. That way you won't have any reservations about taking down the mufflers and you sight lines and range of motion will be dramatically increased.

I didn't drop mine and 3 of the 6 are a real pain that would have been much easier if I could see what I was doing and didn't have to build my rachet extensions from inside that cramped space (because you can't get them in there assembled).

 

Miss read a quote....

Coils would be lower on my list unless I had CEL's and performance issues. Then I'd do them all at once.

 

I’d suggest a thorough inspection of your coils before making a decision on changing. If they are visibly cracked, then yes, change coils/plugs. If not, and you are not getting a CEL or engine behavior commensurate with tired coils/plugs then I’d leave it for later.

 

I wouldn't replace them unless you have misfire issues or visible signs of damage. Unless the cost is irrelevant to you, in which case, sure, replace them.

 

I would also replace the fuel filter. Possibly a coolant flush as well.

 

Changing the coils is not necessary as a preventative maintenance item. However the first design coils were prone to cracking which would cause misfire (especially if wet outside). If they are the original coils i would expect you will find cracking on the housings. If that is the case you will need to replace them.

 

If they are original, I would replace them. I had a cracked one that caused misfires at 40K miles.

 

I had three cracked on a 35k mile motor that was 10 years old.

If youve never changed the plugs on these you will thank me for just buying the coils now for the whopping cost of 230 and just being done with it. It's a no brainier.

 

After I replaced my coils (@70K miles) the engine ran MUCH smoother.

 

Agreed.

Mike

 

Why would one replace properly functioning parts when they are so easy to service if you actually have an issue? It isn't like the coils are buried in an assembly like the inside of the motor or transmission. ' Maybe if the cost is so small as to be insignificant to you? Even $230 seems like a lot of money (to me).