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1984 911 Targa - "Sabine"
Join Date: Mar 2011
Location: formerly Geilenkirchen, GE, now Ottawa
Posts: 347
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Bob, I will check the issue of a possible short in the fuse box tomorrow - thanks.
Tony, As for the DME with no oxygen sensor connection - that is correct. The car is a GE / RoW car, and I read on numerous sites / forums that it might not have an O2 sensor connection - I'd be very interested to know if I'm wrong. If so, there is no harness in the engine compartment to connect the O2 sensor anyway - I have an '86 engine / transmission vice the original one, as it was imported to CA in '89. There is an O2 sensor and a CAT, but no plug anywhere that I can find (even looked when I had the engine out last winter). I had checked the connection in the large DME plug last year as well and don't recall seeing the green wire at pin 24 as per the wiring diagram I have. I'd love to actually connect the O2 sensor where it should be, as the engine does run a little rich I think - I'm not trying to increase HP or anything, just putting it back to a stock 3.2.
Ed, When I said I removed the harness (6 pin) from the relay, it was simply to test the wiring harness itself to ensure that the power / grd aspects where correct as they where supposed to be. in my Bentley manual it recommends testing jumping the pin 30 power (always on) to pin 87b to actuate the pump directly (without key action). That's where nothing happened, which leads me to believe there's a problem in the wiring (at least one of the problems would be in the wiring, as the power to the pump through the relay appears to be bypassed somehow. Understand on the "no 30 second pressurization - my bad". I do need to clarify one piece. You said "When the key is in the run position, if the sensor does not give the signal to dme, the relay will open and stop the fuel pump. There should be no power to fuse 3 when the key is off, or in the run position with the engine not running." The fuel pump DOES NOT run, with the key in the OFF position, but DOES run with the key in RUN when the engine is NOT running - that's the problem from my perspective. Does that make more sense?
Thanks
Skip
Last edited by Skip1; 03-04-2012 at 05:33 AM..
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