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Removing computer to clean contacts
Hi. I want to remove the computer connector on my 3.2 to spray the contacts with cleaner . I know it sounds dumb but I just cannot see how to remove it . I see a black tab that sticks out above the cable but it does not seem to move . What am I missing here? I’m looking for a release tab. Thanks. Maybe my old eyes just can’t see it.
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08-09-2018, 06:18 AM
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Join Date: May 2008
Location: Grapevine, TX
Posts: 1,104
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I'll assume you are referring to the Motronic computer under the driver's seat; there is a metal release tab located on the computer just bellow the wire harness coming out the the connector. you pull the release tab away from the connector and then pull the connector loose from computer starting at the harness end first. the side farthest from the harness has a hook which released last.
you can see the metal retainer in the lower right of this pic. 
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08-09-2018, 06:31 AM
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Thank you! I’ll go see it and try it.
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08-09-2018, 06:34 AM
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Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
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Nick,
When you figure out the "cam lock" on your ECU, spray both the connector cable pins and the pins in the ECU box, then open and close the cam lock multiple times to "exercise" the connections with the contact cleaner on them. I highly recommend the very effective contact cleaner DeOxit D5, it's magic! After many annoying idiosyncrasies on my DME like unstable idle, intermittant start problem, etc, I did the cleaning and the motor runs like new. Good luck! Best, Grant EDIT: Nick, looking at the above pic, I see the 3.2 ECU does not have a cam lock like a 3.6 ECU does, but a lock latch. But same thing applies. Release the latch, spray contacts and open and close the connection multiple times.
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'80SC Widebody 3.6 transplant Anthracite "The Rocket" Long gone but still miss them all: '77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!) '71 911T Coupe White, '70 911T Coupe Blue '68 911 Coupe Orange, '68 911L Soft Window Targa Last edited by uwanna; 08-09-2018 at 07:03 AM.. |
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08-09-2018, 06:56 AM
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Thank you! I’ll go see it and try it. Ok. I have it released but having trouble on the other side with a hook.
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08-09-2018, 07:04 AM
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Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
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Quote:
unbolt the box from the floor to get it done.
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'80SC Widebody 3.6 transplant Anthracite "The Rocket" Long gone but still miss them all: '77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!) '71 911T Coupe White, '70 911T Coupe Blue '68 911 Coupe Orange, '68 911L Soft Window Targa |
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08-09-2018, 07:09 AM
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Got it! Thanks
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08-09-2018, 07:17 AM
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Got it! Thanks
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08-09-2018, 08:52 AM
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Member 911 Anonymous
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+1 on deoxit 5, let it drip dry then reconnect. Take a close look at the connectors to insure they have not widened out by mis-alignment in the past. Use a pick tool to carefully squeeze them back if needed
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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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08-09-2018, 10:30 AM
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Porsche 911 Carrera
Marble Grey
