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> L-Jetronic Dual Relay on 1.8, Followed the old thread but pumps now runs without key in ignition
motorvated
post Mar 15 2013, 10:26 PM
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My fuel pump was running continuously with the key in the "on" position, so I found the old thread dealing with wiring the dual relay properly and testing the Air Flow Sensor and followed the diagnostics and testing stated in there. Air Flow Sensor tested fine, wiring as specified, and now the pump runs with no key in the ignition. I think the pump was re-wired to run through the ignition switch, which I know was wrong. Now I think I may have a bad ignition side on the dual relay. The relay has two numbers on it. Ignition side says 071 906 059. The FI side says 0332 514 129. All connectors are designated on the relay with the same numbers in the same positions as the 120 that the old thread used. The old thread was great to follow as long as things went as planned. In this case, the result was a failure to operate correctly once all the wiring was reconfigured. Any help out there?
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timothy_nd28
post Mar 16 2013, 10:26 PM
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I just read your little side note at the end, you really have no other wires? On that side of the dual relay you should have a big red wire on pin 88z that goes to the battery, then a jumper from 88z to 88y (this you do have). The others, you should have a yellow wire going to pin 86a (ignition "start" 12vdc source). Then a brown wire going to pin 85 (ground). Next will be a smaller gauge black wire on pin 86c (ignition "on" 12vdc source). Lastly, you should have a bigger black wire with red stripe going to pin 88d (powers up the fuel pump). Without these wires attached, I don't see how the car could even start. That brown wire feeds ground for both parts of the relay. Without a ground wire supplying the dual relay, pin 88a and 88b will never make contact, thus no power to ECU or the resistor pack. Maybe these missing wires are cut back at the harness, do you have a harness that plugs into the 12 pin relay board connector? If the wires are merely cut back, perhaps a quick trip to Radio Shack might be the answer. Also, where is the fuel pump located on this car? I remember reading somewhere that this is a 1.7L car with a 1.8 Ljet retrofit? If this is the case, which style fuel pump are you using?
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motorvated   L-Jetronic Dual Relay on 1.8   Mar 15 2013, 10:26 PM
timothy_nd28   Sorry, I'm too lazy to re-read that old thread...   Mar 15 2013, 11:01 PM
motorvated   Sorry, I'm too lazy to re-read that old threa...   Mar 16 2013, 07:47 AM
timothy_nd28   Interesting, but it's fine, connector no conne...   Mar 16 2013, 10:17 AM
motorvated   Interesting, but it's fine, connector no conn...   Mar 16 2013, 02:29 PM
motorvated   Interesting, but it's fine, connector no con...   Mar 16 2013, 02:49 PM
timothy_nd28   Pin 86 on the relay works with the thermotime swit...   Mar 16 2013, 02:38 PM
timothy_nd28   I just read your little side note at the end, you ...   Mar 16 2013, 10:26 PM
motorvated   I just read your little side note at the end, you...   Mar 16 2013, 11:45 PM
motorvated   Correction, wire on 86c is coming off of + termina...   Mar 16 2013, 11:58 PM
timothy_nd28   Much more sense! So the fuel pump has a new w...   Mar 17 2013, 12:13 AM
motorvated   Much more sense! So the fuel pump has a new ...   Mar 17 2013, 07:45 AM
motorvated   Much more sense! So the fuel pump has a new...   Mar 17 2013, 12:06 PM
timothy_nd28   Good to hear 0 voltage on 86a, it means that your ...   Mar 17 2013, 12:19 PM
motorvated   Good to hear 0 voltage on 86a, it means that your...   Mar 17 2013, 12:38 PM
motorvated   Good to hear 0 voltage on 86a, it means that you...   Mar 17 2013, 01:03 PM
timothy_nd28   Yah, you're correct with the spring operation....   Mar 17 2013, 01:08 PM
motorvated   Yah, you're correct with the spring operation...   Mar 17 2013, 01:22 PM
timothy_nd28   It was my pleasure. I would give you my spare, bu...   Mar 17 2013, 02:15 PM


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