Sporadic Idle (Rough Idle)
10-29-2008, 10:42 PM
#1
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85 euro w124 300d non turbo black on black......coming soon hx35 turbo intercooler
Sporadic Idle (Rough Idle)
I started a post awhile ago But still cant fix it. I have a sporadic idle. (Rough, shakes) I have NO vacuum leaks idle valve works. I think its starving for fuel. With ac on it idles fine and the idle rises when cold. It idles about 550 rpms. The engine shakes. So any ides should I turn that screw that adjust fuel spark plugs were fine slight white tips getting about 26 mpg per gallon. When I hit the gas boy it goes and drives good.
10-30-2008, 01:14 AM
#2
First thing I'd do is go grab your multimeter and test the A/F ratio via the recess. Mercedes has stated that no real % to my knowledge, only that the idle and load (2500rpm) MUST be within 10% of each other. I have found that is roughly at 45-50% idle.
