Hey guys. Spent a half hour searching but didn't find any luck. ANyway my car's in for the 90k mile service and I was told that the ignition wires were corroded and need to be replaced...the only ignition wires I know of are the wires associated with the complete engine wiring harness issue.
I was under the impression that this was already done by the previous owner because of the meticulousness of my car, and how often the services were done and kept up. My car was basically mint and was meticulously owned.
On top of that I've never experienced any driveability, running or starting problems or any kind of engine related problem, besides the annoying Fault Code 5 for the EGR Circuit keeping the CE light on and it coming back after reset. It has, in my mind been running in tip top shape (then again I don't know how these cars drove brand new). I can prove my car's been running in tip top shape because I clocked my car doing 0-60 in 8.29 seconds, factory it was 8.3 seconds. I've taken the car several times up to the limiter @ 134 MPH. Basically there was nothing to suggest that the wiring harness was original and/or bad, because at this time it usually really starts to show symptoms around this mileage, or so I've observed from other peoples' experiences.
With that said, this leads me to ask...do the "new" and updated wiring harnesses go old? If so, how long do they usually last before replacement due to age or what not? Could my car still have been on the original harness? Am I referring correctly by my MB Specialist when he said ignition wires, to the wiring harness issue?
Hey, Chinny.
I can't speak to the harness longevity question, but often 'ignition wires' is a generic reference to spark plug wires. They can corrode under the cap and otherwise have a service life.
If that is the case and your service records do not reflect them being changed previously, then they are probably due.That said, when they are dying they do result in driveability issues, so clarify whether that is what he meant before you decide to spend the money now or wait a while longer. Corrosion doesn't happen overnight, so this has obviously been this way for some time.
Take care and enjoy the ride,
Greg
__________________ When you learn from your own mistakes, that's experience.
When you learn from the mistakes of others, that's wisdom.
When you fail to learn from any mistakes, that's government.
Find out what they'e talking about. If they don't answer or answer vaguely get a new shop. What's likely is that your wiring harness has been replaced and is good for the life of the car, and that your spark plug wires are original, working fine and good for many more years. But you need to ask more questions.
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