Grounding ECU causes Main relay to cycle off intermittently
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From: nothing is real unless it is observed
I have recently developed a problem with my P72 Ecu. When mounted in the stock location with the case touching the body my main relay will randomly cycle off for a second car will not stall bu does studder. I have checked all grounds and wires, opened up the ecu case and looked for anything touching inside but found nothing there either. ECU is running on ostrich emulator if that makes a difference.
No Problems when ECU case is not touching body.
No Problems when ECU case is not touching body.
Thread Starter
Honda-Tech Member

Joined: Jul 2004
Posts: 5,957
Likes: 0
From: nothing is real unless it is observed
FYI: I have verified that it is the main relay, cyling off both by listening and can be felt click when touched. Car just stumbles then resumes as normal.
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white90rexsi
Honda CRX / EF Civic (1988 - 1991)
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Jun 28, 2007 02:50 PM
DaX
Honda Civic / Del Sol (1992 - 2000)
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Apr 24, 2007 12:38 PM



Using Non_Resister Plugs and MSD does not agree. Problem solved.....

