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  #1  
Old 03-24-2002, 05:18 PM
barbershoptenor
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more OvervoltageProtection Relay questions

1988 300E - warm engine - second or third start works - beside a slightly faster than normal idle (800-900 rpm) - otherwise, runs fine - suspect bad OPR - any positive indicator?? - one archive search post states that a bad OPR is indicated by the ABS light - confirm??? - any other indicator???
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Old 03-24-2002, 05:21 PM
barbershoptenor
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10 amp fuse is O.K.
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Old 03-24-2002, 07:14 PM
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ABS light does not always come on... it can, but if it's not on, OVP is still likely suspect.

Also, if the car doesn't start, tap the OVP once or twice and see if it then turns on.
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1993 300E 3.2L Sedan w/ close to about 300k miles
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1989 300E with 289,000 miles (had for <1 yr while in HI)
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2006 C230k (Dad's)
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Old 03-24-2002, 07:41 PM
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A bad OVP on a 300e normally causes a low idle.
Brian.
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  #5  
Old 03-25-2002, 10:57 AM
barbershoptenor
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Thanks for replies - if not the OPR, any suggestions as to cause of problem - 156,000 mi - perfect condition otherwise - thanks again
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