Guigsy Posted October 4, 2011 Share Posted October 4, 2011 Hi all. (car is single turbo btw) My battery is located in the boot and the cable runs down the passenger side. The car was stripped but I have refitted the interior. I appear to have run the cable too close to the rear speaker. and when I started the car there was a bit of a fizz and nothing. Car wouldn't turn over. I assumed it was the magnet from the speaker so removed the speaker. Car then started and ran ok. Nothing looked out of place. I went out to clear the cobwebs and pulled over to investigate a flapping noise at speed. After stopping the car stalled. Then wouldn't start. It cranks but doesnt start. Then realised I couldn't hear the fuel pump like I usually can when I turn the key but don't start it. Check the fuel pressure gauge and it was flashing and pressure dropping slowly. So. I assume its the pump. Has the pump gone bang? Is there a fuse? I couldn't find one. I did think maybe my fuel gauge is broken and im just out of fuel but I should still hear the pump shouldn't I. I don't know how my cable routing issue could have caused the fuel pump issue. Electronics is a bit confusing to me! Can I have some advice please guys. The car is sat out on the road outside my house and my drive is on a slope so I can't get it up there till it's running! Quote Link to comment Share on other sites More sharing options...
Stephendjb Posted October 4, 2011 Share Posted October 4, 2011 Have you tried it again since? If it'll start from cold but not hot with those symptoms it's the fuel pump ecu. Quote Link to comment Share on other sites More sharing options...
Shane Posted October 4, 2011 Share Posted October 4, 2011 Adam, if you have a voltmeter check at the plug that feeds the pump in the boot under the cover. Cant remember the wire colours for the pump, but think there are 4 to the connector and the pump ones are the thicker two. Do you know if someone has modded the pump wiring to do away with the stock pump ecu? If you get stuck I can come over and take a look for you, I get home around 7 and can be with you by around 8 to 8-30. Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 4, 2011 Author Share Posted October 4, 2011 I have not tried it cold but will when I get home. How will that make a difference? I was gonna take the cover off and check the wires when I got home I assume it might have. But iv never had the need to check. Not had the car long enough. I've txt you Shane. Cheers Quote Link to comment Share on other sites More sharing options...
bignum Posted October 4, 2011 Share Posted October 4, 2011 There is a fuse in the drivers side kick panel, Quote Link to comment Share on other sites More sharing options...
CanisLupus Posted October 4, 2011 Share Posted October 4, 2011 If the pump is still powered by the stock system you could try to bridge the B+ and FP Port and hear if there's any noise from the pump. Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 4, 2011 Author Share Posted October 4, 2011 (edited) Which fuse is it. I had a look by the roadside but couldn't see which it was. The car doesn't start from cold. I've had the cover off and the wording is modified. But I've got no idea what/why I assume it's the mod to run the pump all the time? I'm not sure Edited October 4, 2011 by Guigsy (see edit history) Quote Link to comment Share on other sites More sharing options...
Shane Posted October 4, 2011 Share Posted October 4, 2011 pm'd mate. Quote Link to comment Share on other sites More sharing options...
evinX Posted October 5, 2011 Share Posted October 5, 2011 Dude, its not a live wire, please tell me its insulated? Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 5, 2011 Author Share Posted October 5, 2011 Dude, its not a live wire, please tell me its insulated? the one from the + coming from the battery thingumy? Yeah thats bare copper all the way... Quote Link to comment Share on other sites More sharing options...
Shane Posted October 5, 2011 Share Posted October 5, 2011 the one from the + coming from the battery thingumy? Yeah thats bare copper all the way... Quote Link to comment Share on other sites More sharing options...
evinX Posted October 6, 2011 Share Posted October 6, 2011 And you ran that along the chassis? near the speaker? you bleeding plum, you shorted something, probably the whole electrics, battery could be nackered? never let the positive touch the chassis when live...jeeeeez Quote Link to comment Share on other sites More sharing options...
bignum Posted October 6, 2011 Share Posted October 6, 2011 I think he`s playing with ya? Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 6, 2011 Author Share Posted October 6, 2011 Yeah I was. Your the plumb Kev Do you know which fuse it could be bignum? I couldn't see one listed on the reverse of the cover Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 6, 2011 Share Posted October 6, 2011 Here you go: Quote Link to comment Share on other sites More sharing options...
Scott Posted October 6, 2011 Share Posted October 6, 2011 Is the fuel pump fuse not the efi one(s) in the engine bay? I always remove it for compression testing etc. Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 6, 2011 Author Share Posted October 6, 2011 (edited) Here you go: Cheers chris. But unless I'm being dumb (very possible). Nothing there shouts fuel pump to me. Checked the ones in the engine bay too and they all looked ok maybe I need to have a better dig around and actualy pull them out. Edited October 6, 2011 by Guigsy (see edit history) Quote Link to comment Share on other sites More sharing options...
bignum Posted October 6, 2011 Share Posted October 6, 2011 I`m pretty sure its 1 of the ecu ones ive had go before, it`ll give you the same symptoms as you have.check those fuses. Quote Link to comment Share on other sites More sharing options...
jagman Posted October 6, 2011 Share Posted October 6, 2011 fuse 30 amp EFI NO2 - feeds the EFI NO2 RELAY ,then onto the fuel pump ECU B+,then out FP to the fuel pump Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 6, 2011 Author Share Posted October 6, 2011 Ok the efi fuse was blown. Popped in another 30 amp. The duel pump whined for a split second then died... Fuse gone again. I only have one left ATM. So there is a short somewhere but I have no idea how to track it down. I don't see how my cable/speaker issue could be causing this. I've taken the speaker out now so it's exactly like before when the car was running fine. The power to everything else seems fine. I hate electrics! Quote Link to comment Share on other sites More sharing options...
jagman Posted October 6, 2011 Share Posted October 6, 2011 Ok the efi fuse was blown. Popped in another 30 amp. The duel pump whined for a split second then died... Fuse gone again. I only have one left ATM. So there is a short somewhere but I have no idea how to track it down. I don't see how my cable/speaker issue could be causing this. I've taken the speaker out now so it's exactly like before when the car was running fine. The power to everything else seems fine. I hate electrics! Without exact info of your instal: the battery in boot now has a long lead to the front , so drops voltage , low volts means more current is drawn by the pump , and you have 2 fitted - this could overload the fuse during pump start up . Is battery full charged ? Lower Volts won't help - you need to poke about with a meter Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 6, 2011 Author Share Posted October 6, 2011 It's a brand new battery. Been in the car about a month. I just have one walbro pump. The dual bit earlier was "fuel" being auto corrected by my phone I might end up moving the battery back to the front. It's just a pita in the boot Hopefully Shane is going to pop around at the weekend as I don't have a meter. Cheers for all the help Quote Link to comment Share on other sites More sharing options...
jagman Posted October 6, 2011 Share Posted October 6, 2011 You do have options , including leaving the battery in the boot : do you still use the fuel ECu? In the boot. You could just run a short fused supply cable to the Fecu direct , then remove the earth lead from the fecu , use the Efi2 relay to switch earth in place of power Ie remove the efi2 fuse and wire to earth - this still allows the main ecu to control the fecu , but switching earth in place of power as the power is constant from battery fused supply on a short lead The efi2 relay is only used for fuel pump control it could be the pump knackered too ! Confusing isn't it ! Quote Link to comment Share on other sites More sharing options...
Guigsy Posted October 6, 2011 Author Share Posted October 6, 2011 Confusing isn't it ! yes. Lol No idea if the stock fuel pump ecu is used or not tbh. Quote Link to comment Share on other sites More sharing options...
Scott Posted October 6, 2011 Share Posted October 6, 2011 Throw a 35A in there and see if that pops Quote Link to comment Share on other sites More sharing options...
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