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Registered
Join Date: Feb 2007
Location: Monmouth Junction, NJ
Posts: 292
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DME Failure - Again!!
Greetings,
Almost one year ago, to the day, my DME relay went while driving down the road. After about 15 minutes of searching around for the problem, I recalled numerous posts regarding the DME relay. Fortunately, I had a new spare DME, the after-market brand Kaehler, which I purchased from our host. I installed the new DME relay in about 10 minutes and was on my way. This morning, I was driving along and the same thing happened, the engine stopped and an rolled into a parking lot. This time being a bit more wise, I went right to the DME relay. Again, fortunately for me, I had just received a replacement DME relay last week. I installed it within 5 minutes and was on my way. My question is, is this the normal lifespan of a DME relay, one year? Could I have received a defective DME relay last year? Is there something else causing the DME relay to expire? Any help is appreciated. Thanks.
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Scott ___________________________ 1985 Carrera Targa - Guards Red 2006 Acura TSX Navigation - Milano Red |
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05-06-2011, 06:15 AM
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Registered
Join Date: Mar 2005
Location: Northern CA
Posts: 4,703
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subscribed and you may have just come across a new faulty relay, I recall reading re. of a cause for these to fail early
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05-06-2011, 06:38 AM
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RETIRED
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Longer than a year......
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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05-06-2011, 07:41 AM
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Registered
Join Date: Mar 2005
Location: Tucson
Posts: 914
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Much longer than a year. I bought my 911 5 years ago and am still running on the DME relay it came with. I do have a spare in the glove box tho.
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1986 Carrera Coupe 1999 Chevy Tahoe 1987 Chevy Blazer 1955 Chevy Apache 3100 Pickup "A little knowledge is a dangerous thing" |
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05-06-2011, 07:52 AM
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Wash. State
Join Date: Jun 2006
Posts: 3,569
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Yep, you got hold of a bad one, who knows, may have been bounced around; may have been bad right from the outset. The brand you mentioned is rated at 30 amps (I believe), so should last a good long time, assuming it was put together on other than a early Monday morning.....hopefully the third time is a charm and you are good to go for ten years or more.
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05-06-2011, 09:10 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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whatever you do, DO NOT purchase the "Uro" replacement.
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended.  Deny Everything; Admit Nothing; and Always Make Counter-accusations 
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05-06-2011, 02:35 PM
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Checked out
Join Date: Jun 2009
Location: On a beach
Posts: 10,127
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Quote:
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05-06-2011, 02:59 PM
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RETIRED
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Made in Hungary don't gimme warm fuzzies either.....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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05-06-2011, 03:00 PM
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83 911 Production Cab #10
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Quote:
 What is next, some Porsche made in Finland  
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Who Will Live... Will See 83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger Last edited by JJ 911SC; 05-06-2011 at 03:12 PM.. |
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05-06-2011, 03:07 PM
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RETIRED
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I bought two from Pelican, made in Germany. Fuch Brazilian.....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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05-06-2011, 03:10 PM
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Registered
Join Date: Nov 2000
Location: Dallas
Posts: 3,593
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Sounds like the "awesome" power window switches which seem to last about 20 uses...literally, maybe less if the last two I bought are any indication.
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Buck '88 Coupe, '87 Cab, '88 535i sold, '19 GLC 300 DD Warren Hall, gone but not forgotten |
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05-06-2011, 04:24 PM
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Member 911 Anonymous
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Do you use your factory OEM alarm? When I first got my baby I used it allot then my DME went out. Stopped using the alarm and it never reared it's ugly head going on 5 years now.
+1 stay away from URO brand, they are POS.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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05-06-2011, 05:43 PM
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Registered
Join Date: Jun 2002
Location: New Hampshire
Posts: 724
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My DME went yesterday after 5 years. Took the backup out of the glove box popped it in and on my way. Ordering another backup today. Mine are from our host.
Tom
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Ice Green '77 Targa 3.6 w/ Steve Wong chip One Way To Get More Horsepower Is To Get A Bigger Horse! "I couldn't find the sports car of my dreams, so I built it myself" Ferdinand Porsche |
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05-07-2011, 07:14 AM
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Wash. State
Join Date: Jun 2006
Posts: 3,569
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Interesting that your first replacement went bad after about exactly one year; warranty is 12 months! You have a snug female connection for the module under there? I'm thinking maybe stress from "wobbling" around might be messing with the integrity of the pins.
You might try (as was suggested elsewhere in this forum) adding a little support under the relay; chunk of foam rubber, some electrical tape to hold everything still.... |
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05-07-2011, 07:31 AM
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Registered
Join Date: May 2003
Location: Columbus, Ohio
Posts: 1,108
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My DME failed about 5 years ago but I went out slowly...intermitent power loss and then was normal. I didn't wait until it failed completely. Have had no problems with the factory part. Maybe I should get a spare.
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05-07-2011, 09:59 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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No doubt about it, if you drive a 3.2, you absolutely must have a spare DME relay.
I think that this is one of those parts where you shouldn't skimp....spend the extra $$ to get a quality unit.
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended. Deny Everything; Admit Nothing; and Always Make Counter-accusations
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05-07-2011, 02:35 PM
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83 911 Production Cab #10
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Quote:
I think it was on my first order from PP. Put it in at the same time that I put a SW chip in. The "old" one is in my glove box along a full set of spare fuse and a fuel pump relay (not sure why since the DME does do the gas pump function... but the Red spare relay can replace a black one).
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Who Will Live... Will See 83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger Last edited by JJ 911SC; 05-07-2011 at 04:22 PM.. |
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05-07-2011, 03:22 PM
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bigsid
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check out this webste about dme repairs.... I've done this to mine and have never had a failure
911Chips.com - DME Relay |
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05-07-2011, 04:16 PM
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Registered
Join Date: Feb 2007
Location: Monmouth Junction, NJ
Posts: 292
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Greetings again,
Thanks for the responses. It doesn't sound like the DME relay failure is attributed to anything other than a known faulty relay issue, such as a cracked solder or excessive heat or possibly the relay was manufactured on a Monday.... Anyway, I've ordered two relays, just to have in the glove box, along with my extra fuel pump relay and fuses. Today, when i replaced my clutch and brake pedal covers (the rubber cover), I took one of the old ones and nestled it under the DME relay, thus making a nice rubber cradle which will hopefully absorb some of the shock. Thanks.
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Scott ___________________________ 1985 Carrera Targa - Guards Red 2006 Acura TSX Navigation - Milano Red |
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05-07-2011, 04:49 PM
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Registered User
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bigsid-
Thanx for that link. It's very interesting.
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Richard 1989 Venetian Blue Targa |
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05-08-2011, 11:23 AM
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Da cab
Das Babe
Das Babe Metalberiech
Marble Grey
Baby (for now)
