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#1
12-23-2004, 09:43 AM
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Over-Voltage Protection Relay - Failure Mode
Given that the OVP relay fuse is OK, and the problem is not intermittent. Does anyone know if the OVP Relay, always fails in such a way that it either works, or it doesn't?
Or, can the OVP Relay also fail partially in such a manner that it still operates some circuits normally, yet fails to operate other circuits at all? Thanks Phil
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'95 E300 Diesel, 264,000 Miles. [Sold it] 
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#2
12-23-2004, 10:09 AM
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Usually, cracked solder connections. Resolder them. Do a search on OVP.
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#3
12-23-2004, 02:08 PM
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mine recently failed
symptoms were high idle (900rpm in Drive, 1900 in Neutral or Park) and very hard to start. Fuse looked ok. Turned out to be the OVP, replaced at the mechanics(should have done it myself in hindsight but I know now) and it's been running fine ever since.
hth domchang Quote:
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D. Chang Network Integration Engineer MCSE, CLP, CCNA
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#5
12-28-2004, 12:57 AM
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Thanks for all the suggestions and replies. I am now fully equipped to check this relay myself. Got hold of the wiring diagram, as well as the circuit description of the OVP protection relay. Bought a digital Multi-meter, as well as a MityVac.
Ready, and anxious to diagnose. All I am waiting for is for the brutally cold temperatures to ease-up a bit. Its currently -2F outside, and close to freezing inside my garage. Need heat, lots of heat. Thanks again Phil
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'95 E300 Diesel, 264,000 Miles. [Sold it]
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Linear Mode
