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Spark plug wires and ignition coils

Posted: Thu Nov 08, 2012 9:05 am
by Heine Muller
Gentleman,
Some advise please. I have the same problem as I had a year ago. My 3.5 has a "stutter" at around 2500-3300 rpm, I replaced a ignition coil and the problem went away. but alas its back.
My questions are :
Has anyone also replaced ignition coils?
Is this a problem with the 3.5?
How often does one replace plug wires?
Can one buy plug wires from anyone but Mitshu?

Thanks for all the great topics and suggestions
Heine

Re: Spark plug wires and ignition coils

Posted: Mon Dec 03, 2012 3:03 pm
by phatmyles
Have you got a soultion for the problem yet? I am only seeing your post now. I had the same problem on my 3.5V6. It would stutter/shudder at those rpms, but it was not something that happened all the time. I would change to a lower gear, so the rpms would go higher for say 30 seconds, and then back to the regular gear, and that would sort of clear the problem.

I took the vehicle for service and computer diagnosed the problem as faulty ignition coils. I changed two of them and have not had the problem since, and the vehicle even seems to have more power, with less fuel consumption. I got my coils from vehicle breakers, so I think if you check around you can find some good second hand spares. Mine even carried a guarantee.