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Old 12-01-2009, 11:24 AM
Douge Douge is offline
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Join Date: Dec 2007
Location: San Diego, CA
Posts: 398
Help confirm possible OVP failure on 89 300E

Just about to roll over 140K. I have a very lumpy idle, but anything off idle it purrs and pulls strongly. In addition, I have a sporadic ABS warning light. I replaced the plugs with copper cores as PO had used platinum. Wires, rotor and cap replaced 9K miles ago. Other than the poor idle, there are no other drivability issues.

I pulled the OVP and visually inspected, it has a single 10a fuse on top which is intact. I sprayed the socket and terminals with electrical contact cleaner with no change in condition, in fact the ABS light is more frequent after I cleaned the connections.

Sounds like a likely culprit. Overall the car is in excellent condition and runs very well. If not the OVP, I think possible fuel filter, pump, accumulator or maybe the ICV?

TIA

Doug

PS, I have the single fuse relay now, can I put the double fuse relay in as a replacement? It is part #2015403745
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1981 300TD
2005 C55
2004 E500
1999 ML430
1992 400E
1998 C43
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1988 300SEL
1986 190E 16V
1991 190E 2.6

Last edited by Douge; 12-01-2009 at 11:43 AM.
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