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Join Date: Sep 2003
Posts: 161
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Used/Rebuilt DME/ECU Control Units
After replacing sensors, battery, distributor cap, rotor, etc. on my '87 Carrera, with no luck, I took it to a real mechanic and he thinks the DME/ECU unit is toast. This was to cure a no start condition (basically no spark at the plugs). I'm wondering if anyone has had any luck getting a used or rebuilt unit? I see in Pano that ****** Auto has rebuilt ones for sale, and I am close to DC Auto in Rocky Mt., NC, so thought I'd check there. Any other suggestions?
BTW, the mechanic opened the DME and couldn't find any obvious breaks, cold solder joints. Is there any place that I can get the old one refurbished to use as a spare just in case? Thanks for the help. Don Ivey '87 Carrera Raleigh, NC |
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10-08-2009, 04:13 PM
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Posts: 161
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Sorry, don't know why I got *'s instead of ****** Automotive. Anyway, that's the place that advertises rebuilt units.
Don Ivey |
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10-08-2009, 04:17 PM
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timeless beauty
Join Date: Oct 2004
Location: Cape Cod
Posts: 660
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These senders, because of the harsh environment around them, do eventually wear out. Either of these senders giving out would leave one stranded out in the middle of nowhere. Change them out and rest assured that you won't be having any problems.
911-606-108-00-OEM Timing Mark Sender, 911 Carrera (1984-89) Brand: Genuine Porsche [More Info] No Longer Available 911-606-215-01-M14 Impulse (Reference Mark) Sender (2 required, sold individually), 911 Carrera (1984-89) Brand: Bosch [More Info] $138.75
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Bob 87 targa |
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10-08-2009, 04:27 PM
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I'm not talking about the reference and speed sensors; I've already replaced those. What I'm talking about is the DME/ECU control unit, the "brain" that is bolted down under the driver's seat. Anyone know where I can find a used/rebuilt one? Thanks,
Don Ivey '87 CArrera Raleigh, NC |
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10-09-2009, 04:01 AM
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Get off my lawn!
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-09-2009, 04:43 AM
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Registered
Join Date: Oct 2002
Location: St. Louis region
Posts: 3,147
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Quote:
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Deceased: Black '88 Carrera Coupe, Steve Wong and Russell Berry chips, Dansk premuffler, custom MK GT3-style muffler, Magnecores. Al Reed 7 & 8 X 16 Fuchs. Full Elephant Racing suspension, 21/28 T-bars, Turbo tierods, bump steer kit, Bilstein Sports, BK strut bar. Ruf bumpers, 935 mirrors, Carrera 3.0 tail, DasSport bar. '11 BMW 328iX, '18 Nissan Frontier 4X4, '92 Acura NSX. |
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10-09-2009, 05:40 AM
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Join Date: Mar 2005
Location: Tucson
Posts: 914
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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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10-09-2009, 06:20 AM
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Join Date: Jan 2009
Location: Loxahatchee,FL
Posts: 138
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I had my CDI rebuilt by I believe PORSCHEDME.COM they advertise in Pano, havent had any issues with it yet, I think I paid 250.00 5yr warranty, and have put well over 1500miles on it long trips
Ernie
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1980sc/ Casablanca Beige 1987 944n/a White 1973E/Signal Yellow/ gone and Missed 1971T/Green/Gone 1988 944n/aWhite/Gone |
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10-09-2009, 07:03 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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+1........Specialized ECU Repair - Porsche DME Repair, Bosch and Motronic Control Units
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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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10-09-2009, 12:54 PM
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+1 Specialized ECU in South Florida
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DonMo 1984 911 Carrera Targa 3.2 liter, SSI's, Dansk 2 to 1, Steve Wong Chip Columbia, SC "Go Hokies" |
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10-09-2009, 01:31 PM
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Join Date: Dec 2003
Location: Centreville, MARYLAND
Posts: 938
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Something to check..... I found the #6 fuse from the passenger to be the wrong size. It requires a blue fuse. Every once in a while the car would not start. You could jump start it by pushing it down hill, but not always start using the starter. This is the fuel pump fuse.
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Old Tee all 911s sold |
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10-09-2009, 02:29 PM
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timeless beauty
Join Date: Oct 2004
Location: Cape Cod
Posts: 660
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Quote:
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Bob 87 targa |
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10-09-2009, 02:48 PM
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I have not tried another ECU/DME because I don't know anyone with a similar car, but I have replaced everything but the ECU/DME, so I kind of narrowed it down to that. Yes, I've thought that maybe it could be something else, but can't imagine what.
One thing surprised me though. When I first started chasing this problem down, everybody said it probably wasn't the ECU itself, but the relay or sensors. The ECU is "bullet-proof" was the response. Today, however, when I talked to vendors who sell them, their consistent refrain was that these things go out all the time, and they sell them often. In fact, several vendors were out of stock for used/rebuilt ones. Just saying! Anyway, thanks for the help and pointers. I've ordered a rebuilt one, and may have the original rebuilt as a backup. Thanks, Don Ivey '87 Carrera Raleigh, NC |
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10-09-2009, 04:24 PM
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1984 Carrera Coupe 3.2
Join Date: May 2009
Posts: 157
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Hi Don, You've probably already done this, but just in case you didn't...Have you checked that all your grounds are nice and clean? Particulary the ground strap between the chassis and transmission and the one at the battery? Mine were corroded, and I'd hate to hear after throwing all these parts at the problem, it's something simple like dirty grounds.
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10-09-2009, 06:13 PM
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Grounds were the first things I checked, and all were cleaned - didn't make a difference in starting. I'm anxious to get this thing solved and back on the road; I miss it! Later,
Don Ivey |
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10-10-2009, 05:48 AM
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timeless beauty
Join Date: Oct 2004
Location: Cape Cod
Posts: 660
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Bob 87 targa |
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10-10-2009, 07:38 AM
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Registered
Join Date: Oct 2007
Location: Italia
Posts: 58
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be sure that your DME relais is working before check & rebuild the DME control unit.
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10-23-2009, 09:03 AM
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porsher
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Jose Pain is a great guy: knowledgeable and helpful |
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10-23-2009, 10:32 AM
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Join Date: Sep 2004
Posts: 3,650
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I've got an '87 DME that's my spare that I'll consider selling. It's a known good unit - pulled it out of the running car myself. Let me know if you're interested. Good luck getting your car fixed! |
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10-23-2009, 11:01 AM
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Just have the DME tested and if found bad rebuilt. As others said there are several choices out there. Pelican Parts is amongst them and since we are using this BBS why not support the host?
Ingo
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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10-23-2009, 11:26 AM
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Carrera
1984 Porsche Targa 3.2
1974 Porsche 911 Targa 3.6
