300SEL ROUGH IDLE

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300SEL ROUGH IDLE

06-10-1999, 10:53 AM

SHINDE.S@EMS-T.CA

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I HAVE A 89 300SEL WITH 150K KM. THE IDLE ON THE CAR IS ROUGH. THE RPM NEEDLE FLICKERS SLIGHTLY AT IDLE. ALSO ON CLOSE OBSERVATION THE OIL PRESSURE NEEDLE IS ALSO FLICKERING. THE ROUGH IDLE SENDS A SMALL VIBRATION IN THE BODY OF THE WHOLE CAR. A HAVE THE MANUALS OF THE CAR BUT THE TESTING DESCRIBED IN IT INVOLVES A LOT OF SPECIAL INSTRUMENTS AND TESTERS.
MY QUESTION IS ARE THERE SOME BASIC THINGS TO CHECK WITH A MULTIMETER REGARDING THE ELECTRONIC COMPONENTS FOR THE IDLE SPEED.ALSO IF THIS IS NOT FIXED IS THERE ANY LONG TERM PROBLEMS WHICH WILL DEVELOP.
THANKS IN ADVANCE

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