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Old 08-07-2002, 10:32 PM
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'93 300e idle surging - fault code 009...advice needed


i just purchased a 1993 300e with 67,000 miles. an excellent driver but has a surge at idle ranging from 500-1100 rpm. i scanned the ecu and am getting a 009 hfm signal too high code.
my pockets are not deep enough to throw parts at it so am i looking for advice to further diagnose the issue. any comments appreciated!

thanks in advance,
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