Mr Posted June 15, 2019 Report Share Posted June 15, 2019 Having fuel pump issues with the conversion start with a breakdown with where I am Both looms where sent off and ecu for immobiliser delete that was a while ago as the project was not started for a while Loom fitted ecu fitted Engine all fitted and connected Pipe work fitted but no water in pipes This is where we are stuck then we put the earth back on the the brake lights stay on and the pump will only work when the door is open it pre primes When you turn the ignition on no pump Car will just turn over but want fire no power to the following To coil packs Injectors Throttle body And pump to the ignition Cannot get into the ecu via the odb port or the airbag system only the abs Changed and checked every relay We where thinking ECU issue any idea's as we are just going round in circles Quote Link to comment Share on other sites More sharing options...
Rich Posted June 15, 2019 Report Share Posted June 15, 2019 I'd say wiring issues. Who did it? Quote Link to comment Share on other sites More sharing options...
Mr Posted June 15, 2019 Author Report Share Posted June 15, 2019 ACR did it Quote Link to comment Share on other sites More sharing options...
Mr Posted June 15, 2019 Author Report Share Posted June 15, 2019 Anybody got a diagram for the ecu plug? Quote Link to comment Share on other sites More sharing options...
LR5V Posted June 15, 2019 Report Share Posted June 15, 2019 20v ECU? - looms differ between engines, you need to give us the engine code My Mk4 Golf AUM has an odd relay in the engine bay that would play up from time to time, wasn't aware of it till someone told me about it. Quote Link to comment Share on other sites More sharing options...
LR5V Posted June 15, 2019 Report Share Posted June 15, 2019 Additional - on mine it was Relay 30 that lives in the engine bay - its the ECU power - usually grey Quote Link to comment Share on other sites More sharing options...
Mr Posted June 15, 2019 Author Report Share Posted June 15, 2019 1 hour ago, LR5V said: 20v ECU? - looms differ between engines, you need to give us the engine code My Mk4 Golf AUM has an odd relay in the engine bay that would play up from time to time, wasn't aware of it till someone told me about it. It's the bam engine and loom we are running I thought I added that above 😂 Quote Link to comment Share on other sites More sharing options...
mk2 Posted June 15, 2019 Report Share Posted June 15, 2019 Wiring for sure. You could probe all the ecu pins and see which one goes high/low while cranking. Diagram much easier. Sounds like more than one relay or control wire (to relay). Quote Link to comment Share on other sites More sharing options...
LR5V Posted June 15, 2019 Report Share Posted June 15, 2019 NP - Drop box link to S3 wiring diagram in this thread works HIH : https://www.audi-sport.net/xf/threads/ecu-wiring-diagram.244983/ ECU power is first place I would look into Quote Link to comment Share on other sites More sharing options...
Mr Posted June 16, 2019 Author Report Share Posted June 16, 2019 20 hours ago, LR5V said: NP - Drop box link to S3 wiring diagram in this thread works HIH : https://www.audi-sport.net/xf/threads/ecu-wiring-diagram.244983/ ECU power is first place I would look into Printed that off yesterday got spare bam loom here as well so that will help as well Quote Link to comment Share on other sites More sharing options...
TNT93 Posted June 18, 2019 Report Share Posted June 18, 2019 Don't know if my upload is going to work not done it before but this should help too, although don't take autodata as gospel Bam 1 Bam 2 Bam 3 Bam 4 Bam 5 Bam 6 Bam 7 Bam 8 The pictures are huge so you'll have to do some zooming and scrolling and the last 3 your likely not going to need, I didn't Quote Link to comment Share on other sites More sharing options...
Mr Posted June 27, 2019 Author Report Share Posted June 27, 2019 Been away back to the car now found that the 62 pin was not fully pushed in so now have power and can start the car but no throttle response Checked the voltage on the throttle body only 5v going to it anybody got any ideas looks like its loom related but any help would be great thanks Quote Link to comment Share on other sites More sharing options...
mk2 Posted June 27, 2019 Report Share Posted June 27, 2019 Yeah. TPS output should vary between about 0.5-4.5VDC. One side +5V the other 0V, but not usually the same potential as earth (helps reduce interference). Quote Link to comment Share on other sites More sharing options...
LR5V Posted June 29, 2019 Report Share Posted June 29, 2019 On 6/27/2019 at 11:49 AM, Mr said: Been away back to the car now found that the 62 pin was not fully pushed in so now have power and can start the car but no throttle response Checked the voltage on the throttle body only 5v going to it anybody got any ideas looks like its loom related but any help would be great thanks Glad you have progressed past the fuel pump problem... but sorry to hear its still mucking you about - I assume you have checked all the other pins are pressed fully home? As Mk2 says 5v is normal. Assuming you have kept the BAM as DBW? I would look on vagcom to see if your accelerator pedal is sending signal to the throttle body, at least do a throttle alignment whilst you are there. If that's not possible continuity check the cables to the pedal and all 6 throttle body cables. Quote Link to comment Share on other sites More sharing options...
Mr Posted July 6, 2019 Author Report Share Posted July 6, 2019 It's turning into a ball ache now so far it looks like the throttle wires are wrong there not matching the throttle pedal side looks like 2 wires are wrong so far just going through the checks on the diagrams we have printed off Quote Link to comment Share on other sites More sharing options...
Mr Posted July 6, 2019 Author Report Share Posted July 6, 2019 Trying to find the lupo gti ecu wiring diagram or throttle pedal diagram but can't find that one any where, need to see what the wires are on the throttle pedal side just to confirm it's wrong Quote Link to comment Share on other sites More sharing options...
LR5V Posted July 6, 2019 Report Share Posted July 6, 2019 (edited) This is from ARC/AVY polo wiring diagram G79 accelerator position sensor G185 accelerator position sensor 2 Edited July 6, 2019 by LR5V Quote Link to comment Share on other sites More sharing options...
mk2 Posted July 6, 2019 Report Share Posted July 6, 2019 The way it works, is one of the outputs (potentiometer wipers) increases in voltage while the other decreases. Done like that to ensure no accidental accelaration. So you'll find that when you measure it, one is at something like 4.5V and the other is around 0.5V. The non moving parts are at 5 and 0 (and 0 and 5). Quote Link to comment Share on other sites More sharing options...
Mr Posted July 17, 2019 Author Report Share Posted July 17, 2019 Got it going now thanks for all the help the 6 wires was wired wrong managed to sort it out as we only do it on a Thursday and Saturday hence why not on here often due to work to reply had a issue with the heaters as well just rebuild and see what else we hit then will add some pictures on here Friday to show how the build is going Quote Link to comment Share on other sites More sharing options...
Mr Posted July 20, 2019 Author Report Share Posted July 20, 2019 Back to it again and yet another loom issue, this time the speedo the rev counter works no speedo!! Looks like everything out job to correct may as well have just done the loom to start Quote Link to comment Share on other sites More sharing options...
mk2 Posted July 20, 2019 Report Share Posted July 20, 2019 Check the power supply to the speedo sensor. It usually has 5V and 0 and a 5v output square wave signal. You should be able to see the same signal in the dash. If you turn the sensor spindle in your fingers and connect up a voltmeter, you should see that output signal. Quote Link to comment Share on other sites More sharing options...
Mr Posted July 25, 2019 Author Report Share Posted July 25, 2019 Will try that tomorrow but still trying to find a lupo gti speedo diagram as it's different for a standard speedo hopefully this is the last of the issues and it will be on its wheels next week Quote Link to comment Share on other sites More sharing options...
wonkyjon Posted February 6 Report Share Posted February 6 On 7/25/2019 at 3:12 PM, Mr said: Will try that tomorrow but still trying to find a lupo gti speedo diagram as it's different for a standard speedo hopefully this is the last of the issues and it will be on its wheels next week Sorry to revive such an old thread. I have the same issue with the speedo not working. How did you sort it in the end ? Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 7 Report Share Posted February 7 Check the gearbox pulse sensor unit... Quote Link to comment Share on other sites More sharing options...
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