[firefish]

Fitted new air filter today and wanted to take it for a test drive. I turn the key and all is normal (all lights ok and engine cranks) but it doesn't start. I make two 10 second attempts. It acts as if I had disconnected the plug wires. I pop the hood to check the wire from the coil to the cap sicne I had just messed around in that area. All is ok so I close the hood and I activate and deactivate the alarm. New try but same result - crap! Now it is dinner time so the car sits for like one hour before I get to start working on it. So, back outside I decide to give it another try before I start troubleshooting. And it starts instantly!?! I try again and again and it works perfectly. Just a temporary fluke or could it be the DME-relay going bad? Or something else? It's running now but this problem might come back at a bad time so I'd like to get it fixed.

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[PorscheDude]

Yes, the car will crank with a bad DME relay. The relay sends power to the ECU.
Pick up another relay for peace of mind.

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[ds968]

+1

before I replaced mine, that was one of the sypmtoms.. ( among others - it's amazing how may "scary" , different symptoms that single $ 20 unit can create.. )

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[firefish]

<!--quoteo(post=76567:date=Aug 1 2009, 12:06 AM:name=ds968)-->QUOTE (ds968 @ Aug 1 2009, 12:06 AM) <{POST_SNAPBACK}><!--quotec-->+1

before I replaced mine, that was one of the sypmtoms.. ( among others - it's amazing how may "scary" , different symptoms that single $ 20 unit can create.. )<!--QuoteEnd--><!--QuoteEEnd-->

I have now made the "emergency cable" that connects the 30, 87, and 87b connectors so that I can replace/bypass the DME relay with it the next time this happens. And I'll buy a new relay - should I go for an original part (the newish one with a 993... p/n) or simply whatever new one that works?

I'd rather not simply replace the relay assuming that the relay is where the problem is. I would like to verify it first by getting this problem again and then fixing it by replacing the relay with a cable or a new relay.

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[biotechee]

Get the 993 part number one.... I don't even know if you can get the original one anymore (probably a 928 or 944 PN).

I replaced mine with the 993 part number and keep the original as a spare- it worked when it was installed so should still be good.

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[firefish]

Ok, thanks!

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