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Re: '88 240DL has lost power over the last year. 200 1988

posted by  someone claiming to be Zee on  Mon Jul 23 21:33 CST 2001 [RELATED]

Your comment about it possibly being related to humidity should get you thinking along the lines of some triggering event or condition -- similar to heat causing electrical problems in a faulty component or circuit.

So, check the wiring harness for rot. When my '86 harness failed, the engine died wheile the blower fan speeded up to High.

Do the multimeter diagnostic checks of the pin connections where the harness fastenes to the FI/ECU inside the car. Maybe you have a burned spot on the circuit board chich is responding to environmental contitions, while not being totally failed yet.

Lastly, could be the pin connection sleeves at the ignition ICU (right fender) have some corrosion, or were loosened by a previous owner/technician if this mudole was ever disconnected. (Bentley manual says don't disconnect this harness, or you need to replace the ICU dur to breaking the pin connector sleeves. I have heard of someone saying they have replaced those sleeves.)





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