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livewirevoodoo's Avatar
 
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Original Relays

Just got around to changing some of the relays in my fusebox (the cheap $5 ones). I had a mix of black plastic relays and shiny metal covered relays, with the black ones looking significantly newer.

I'm assuming these cars shipped with the older metal cased relays. Any way to tell if the rest of the metal case relays are original parts from '87? Anyone know of a timeframe when these relays switched from metal to black plastic cases?
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Old 01-14-2006, 06:50 AM
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They have always been a mix. The only one you will probably ever need to change is the Motronic supply ("fuel pump") relay 993 615 227 00. They tend to last about 5 - 8 years, classified as a service item.

We sold one radiator fan relay in the last year and virtually none of the others.
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Old 01-14-2006, 07:06 AM
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Quote:
Originally posted by Britwrench
The only one you will probably ever need to change is the Motronic supply ("fuel pump") relay 993 615 227 00.
aka DME relay, correct?

Was replaced with last timing belt/water pump job - thanks.
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''87 944na 85k
C02 / M158 / M418 / M425 / M431 / M454 / M533 / M650 / M946

'94 Oldsmobile 88 Royale (winter beater)

Its not what you drive, its what drives you.
Old 01-14-2006, 08:03 AM
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..P ..P is offline
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The DME relay and fuel pump relay are the critical ones that will strand you if they don't work right.

It's a good investment in safety to change em out if they are in question, and save the old ones to get you home if the new ones go out.

P
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Old 01-14-2006, 08:43 AM
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There is only one relay..on 944 models.
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Old 01-14-2006, 08:53 AM
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Quote:
Originally posted by ..P
The DME relay and fuel pump relay are the critical ones that will strand you if they don't work right.

It's a good investment in safety to change em out if they are in question, and save the old ones to get you home if the new ones go out.

P
That's only one relay.
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Old 01-14-2006, 09:40 AM
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"ones" and "em" are plural if you are being critical.
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From November 2012; Precision Porsche Specialist
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2001-2012 Gerber Motorsport Inc. 206-352-6911
07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red
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Old 01-14-2006, 10:00 AM
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Does anyone know where I might find the fog relay on a right hand drive car? Mine seems to have packed up (no power to the fuse but all switches pass muster).

According to the official Porsche workshop manual it's supposed to be adjacent to the steering column under the dash. It's not. I wondered if this is something peculiar to RHD cars - the owners and workshop manuals all illustrate LHD.
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Old 01-14-2006, 11:48 AM
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