Thread: Rough Idle...
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Old 10-03-2001, 01:41 AM
David C Klasse's Avatar
David C Klasse David C Klasse is offline
CheFrac is Back!
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
If the car was running too lean, then your Check Engine light would illuminate. I would rule this one out! (Unless your MIL light is in fact on.)
The air/fuel ratio is computer controlled, but you ALSO have an idle control relay (or whatever it is called). I would not think that the A/C is a direct factor though... just results in a symptom, or lack thereof. Damn, I'm stumped... let's see what a tech has to say!
2006 E350 w/ 155k miles (Daily Driver)

1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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