Thread: Help Rough Idle
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Old 04-16-2006, 01:32 AM
jrmd01 jrmd01 is offline
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Join Date: Sep 2002
Location: Ewa Beach, Hawaii
Posts: 333
Quote:
Originally Posted by laslywhite
When he hooked his diagnostic tool up the car, received the following message 'Check the connection could not communicate with the computer.'
Might be a shot in the dark, but try changing the wiring harness. I believe Mercedes continued to use the biodegradeable wiring harness up through 94'.

I've had the dreaded idling problem every year since I've owned my car. They were fixed only to have another part fail the following year.

1. Spark plugs, distributor, rotor
2. OVP
3. Alternator (things changed that didn't help...found loose hose behind dash)
4. coil (things changed that didn't help...FPR hose)
5. Valve seals (things changed that didn't help...spark plugs, MAS, O2 sensor, fuel pump & filter)
6. This will be my sixth year of ownership...hopfully I won't have any idling issues.
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1986 Gold 300E 4Dr automatic
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