C220....idles high when in park with heater on. If I turn off the heater the idle comes down from about 1500 rpms to 1000 rpms. Normally is idled at about 700 rpms. How to solve...JJ Knight NJ

Asked by Jan 23, 2015 at 04:58 PM about the 1995 Mercedes-Benz C-Class C 220 Sedan

Question type: Maintenance & Repair

C220....idles high when in park with heater on. If I turn off the heater the idle comes down from about 1500 rpms to 1000 rpms. Normally is idled at about 700 rpms. How to solve...JJ Knight NJ

1 Answer

63,335

Sound,s like you may have a vacume leak,or the TPS is bad.

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