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  #1  
Old 05-07-2003, 03:02 PM
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Join Date: Mar 2002
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Unhappy C36 runs rough

Hello all,

I have a 1995 C36 and it has very recently started running rough. I did some routine maintance over the weekend and on my drive to work the car began to sputter. I cleaned and reoiled the K&N filter (very careful not to over oil the filter) as well as added some fuel system cleaner (prolong) to a fresh tank of gas. I have not changed the fuel filter in about 30,000 miles and I am wondering if the cleaner may have managed to partially block the fuel filter. Does this seem likely? The manufacturer does mention that older filter may need to be changed.

The car is due for its 120k service, but I was planning on doing some of that stuff myself (plugs, fuel filter, cabin filters, etc), which may also help fix the problem.

Can you guys think of anything else that might be the problem. I have no CE light as of yet.

~dnm
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Old 05-07-2003, 04:49 PM
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Location: St. Albert, Alberta, Canada
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Sounds like the infamous wiring harness problem. Effects your car. The entire engine wiring harness must be replaced. Has this been performed on your car? Find out.

Seems to run about $2K P/L in USD.
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  #3  
Old 05-07-2003, 07:01 PM
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Quote:
Originally posted by blackmercedes
Sounds like the infamous wiring harness problem. Effects your car. The entire engine wiring harness must be replaced. Has this been performed on your car? Find out.
The wiring harness and coils were replaced at 90k.

~dnm
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Old 05-08-2003, 12:51 PM
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Location: England
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Well, as its due for them, and it's usually the cheapest and best thing to do first, I'd do good ol' plugs and leads (wires).

For some reason, copper is much better than platinum plugs in most MBs.
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