Coil Packs...

[wbarfels]

My car is a 94 with 105k miles..Ive been having some stutter / Idle issues but I think I fixed the stutter and Im thinking ICV for the Idle problems...

Anyways I tested all the coils, there all .6 and ones .7 I know that's not a "end all" way of knowing there good, But my buddy is a caddy Mechanic and he's telling me that when they go bad, they go bad and won't test right or do anything. My car isn't throwing a code...So is it worth buying new ones? Has anybody bought new ones and noticed a big difference even if theres no code and they test ok?

Or in ACTUAL term's take advantage of the sale on M3 door moldings or get new coils?

[flyfishvt]

You will get people on both sides of this. I tend to lean towards your buddy but there is no escaping the fact that those coils have a primary coil and a secondary coil and from what Ive read there is no way for the average guy to test the secondary coil.

All that being said...If your coills are causing a msfire you should be getting a CEL. If there's no CEL I would look elsewhere. Plugs are a biggie and cheap. 91 octane gas is a biggie.

The coils do become less efficient over time so if you can't find another solution and you have the cash then change them out.

Id rather drive a car that runs good than one that looks good. The M3 stuff will still be there when you get more cash.