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fig911's Avatar
 
Join Date: Oct 2002
Location: st. Louis
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DME Relay...

My car went caput the other day. Since it is my daily drive, I need to get it up and going again ASAP. I am going to try to replace the DME Relay tomorrow when the local P-car shop opens and if that doen't work, I guess I will have to get it to the shop and let them sort it out.

My question is...Which relay is the DME? Is there anyway to find out if it is blown besides trying a new one in its place?

Thanks,


Mark

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fig911

2000 996 (guards red, H&R Coilovers, CAI, Fabspeed, Recaro Seats, Alpine/JL Audio)

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Old 02-01-2004, 12:35 PM
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Small square one under d/s seat
Old 02-01-2004, 12:39 PM
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Does the drivers seat need to come out to reach it? I would just go check but my car is down the street where it went dead.

Thanks

mark
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fig911

2000 996 (guards red, H&R Coilovers, CAI, Fabspeed, Recaro Seats, Alpine/JL Audio)

Past Porsches
'99 Boxster
'95 993 C2
'86 911
'90 944S2 cab
Old 02-01-2004, 01:09 PM
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Nope. Just move the seat as far back as it will go.

JP

1987 Carrera Targa 17K miles
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Last edited by rzepko6194; 02-01-2004 at 01:15 PM..
Old 02-01-2004, 01:11 PM
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Thanks for the responses guys...how about checking to see if that is the problem. Is there any easy way besides buying a new one and trying it?

I've heard it is good to have an extra one anyway, so I guess if it is not that I'll just keep the new one for an extra.


thanks,

Mark
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fig911

2000 996 (guards red, H&R Coilovers, CAI, Fabspeed, Recaro Seats, Alpine/JL Audio)

Past Porsches
'99 Boxster
'95 993 C2
'86 911
'90 944S2 cab
Old 02-01-2004, 01:15 PM
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A simple check is to run to find a fuse in the front trunk that has 12VDC at all times. Then run a jumper wire to the fuel pump fuse. The FP should run. Then try to start the car.
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Old 02-01-2004, 01:20 PM
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It's usually the solder joints that hold the relays that eventually crack and cause a cold joint- from all the stress of the relays mounted horizontally on the circuit board. The relays are heavy and vibration eventually causes the poor quality joints to crack. The cracks are hard to see, but you can resolder them to see if it fixes your problems.
Old 02-01-2004, 01:22 PM
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Since it powers both the fuel pump and DME box you'd have to check if both are getting power. Don't have my book handy to tell you where to check on the DME box, sorry.

A new one from Pelican is $33. I just replaced mine during preventitive maintenance and will keep the original as a spare.

Good Luck!

JP

1987 Carrera Targa - 17K miles
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Old 02-01-2004, 01:23 PM
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http://www.pelicanparts.com/techarticles/911_carrera_start_troubleshoot/911_carrera_start_troubleshoot.htm
Old 02-01-2004, 01:38 PM
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I carry an extra. I have had good luck soldering as mentioned. Jumper wire may be alternative to spare. Fuel pumps also have a limited life, but first check the relay. One minute to pop it out!

Old 02-04-2004, 02:51 AM
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