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  #1  
Old 06-16-2000, 11:17 PM
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Join Date: May 2000
Posts: 376
Hi everyone. Have an 87 that will not idle. Just stalls out. If you try to hold it at a steady rpm (1000 - 1500) it surges a few hundred rpm. At high rpm and engine speed seems to have a slight miss and be down on power. I think it might be fuel related. Any suggestions? Thinking about checking the system pressure. Any other areas to look at? Thank you in advance. Tinker
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  #2  
Old 06-16-2000, 11:23 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
It sounds like you are in limp mode. First check the overvoltage relay. Have you had battery problems or jump started the car lately? If so, the fuse is most likely blown. Check the relay and the fuse. It is behind the battery behind the black cover.

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
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  #3  
Old 06-17-2000, 11:29 AM
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Join Date: May 2000
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Benzmac, I did replace the battery about four weeks ago. The old battery had a bad cell that looked fried. I have seen other posts concerning this OVP relay. Is this a common problem? Thanks again.
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  #4  
Old 06-17-2000, 01:12 PM
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Posts: 376
I checked the OV fuses/relay, it has two 10 amp.fuses on top. Both fuses are o.k.. Could this relay still be the problem?
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  #5  
Old 06-17-2000, 05:47 PM
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Join Date: Jan 2000
Location: New Bedford, MA USA
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YUP

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Jeff Lawrence
1987 300e
1989 300e
1987 BMW 325
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  #6  
Old 06-17-2000, 10:42 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
The relay has gone south more than likely. I would replace it and see what happens from there.

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
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