Quote:
Originally Posted by pilot4fn
Hmmm... I still have the light rumble on 3000rpm after fixing the vibrations on the same rpm by swapping engine and transmission mounts.
Also, have changed the plugs, plug tubes, oil & filter, but not the coils. Could it be that the coilpacks would be reason for my car's rumble?
Car is 2001 2.7 Boxster.
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Pilot4fn, The coil packs can definitely be one of the causes. My car is a 2001 S with 106000 miles, I did everything you have done as well. I got help from this forum, the guys here know their stuff. Coil packs are one of the items that was highly recommended to fix this problem. I've only put in about 50 miles since doing this service, but from what I noticed, the rumble is gone. Also, the Pelican site says to change the spark plugs every 10000 miles, so if you've got more than that on plugs you currently have, I would change both of them at the same time. Your already in there, so why not. I had over 20k miles on the plugs and when I took them out, the tips were almost gone. I replaced the coil packs about 8k miles ago with a set my friend gave me, he said they were only about 30k on them. I think the combination of not changing the spark plugs and using old coil packs may have been my issue. I'm not gonna mess around with used ignition parts anymore. LOL. Good Luck.