Admin Paul Posted March 15, 2008 Admin Share Posted March 15, 2008 No volts on fuel pump positive wire any ideas? Changed relay and thats ok. Paul Link to comment Share on other sites More sharing options...
Guest sjc Posted March 15, 2008 Share Posted March 15, 2008 me electrical drawings are at work Paul, if your still in trouble monday i will write you a walk through of the circuit Link to comment Share on other sites More sharing options...
Admin Paul Posted March 16, 2008 Author Admin Share Posted March 16, 2008 thanks mick Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 16, 2008 Share Posted March 16, 2008 have you checked it when you have the ignition on?? Link to comment Share on other sites More sharing options...
Admin Paul Posted March 16, 2008 Author Admin Share Posted March 16, 2008 yes mate 2nd click, but having probs with battery at moment so might be a case of not having enough volts to switch relay Link to comment Share on other sites More sharing options...
Admin Paul Posted March 16, 2008 Author Admin Share Posted March 16, 2008 Is there a fuse or relay in in the fuse box for this? Or is it just the yellow one under the dash (EFI) Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 16, 2008 Share Posted March 16, 2008 sure its just the relay under the dash. but come to think of it, there might be a fuse in the box for the switch. you'll have to check all the fuses and illutrations. did you put the full loom in? front to back or did you snip it down the drivers side. fuel pump wires are black with blue strip and black with red strip and are bigger i think?? have you checked that its all earthed properly. but this is probably not the prob seeing as the earth to the loom for that bit comes striaght from the battery. could be a battery problem, could always try another or hook up a booster pack Link to comment Share on other sites More sharing options...
Admin Paul Posted March 16, 2008 Author Admin Share Posted March 16, 2008 full loom but left the original fuel pump wires from back seat to pump and joined under seat only 2 wires the one for the pump and the one for render unit, the earth connections seem ok and are still attached under seat base. Havent got starter or alternater wired but this should not affect it should it Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 16, 2008 Share Posted March 16, 2008 (edited) starter and alternator run on a seperate loom anyway don't they?? that shouldn't make a difference. hhmmmm i know on the mfi turbo loom there are 3 brown wires that go to the battery. if they are connected wrong then when you turn the ignition on the pump won't prime. is there a similar set on wires on the efi loom to the battery. also pull your fuse box out and check for broken wires underneath where they connet up to the fusebox. do your ignition lights come on when you turn the switch? this is a wierd one. did you put a brand new FP relay in or another one lying around in there? could be that both relays are buggered, but thats not really likely, but then you never know. if these things are alright then i suggest you have a broken wire somewhere in the loom, or its not earthed around the car properly. are all interior earths and boot earths and engine bay earths on? did you try another battery or booster pack. even if the battery was abit buggered, you should still get some sort of current from itthat reads Edited March 16, 2008 by steelcabby Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 16, 2008 Share Posted March 16, 2008 another thing to try is to trace the fuel pump wires back to there source. then see what reading you get from that. ie under fusebox i think. if you get a reading from there you know there is a problem in the line somewhere. ie fuel pump relay. or a broken wire somewhere. Link to comment Share on other sites More sharing options...
Admin Paul Posted March 16, 2008 Author Admin Share Posted March 16, 2008 one daft question i have no ecu connected would this affect it Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 16, 2008 Share Posted March 16, 2008 (edited) that isn't a daft question mate. but i can't give you an answer on that....lol. maybe. is all i can say to that. but wouldn't of thought so. have you not got one for it yet??. its linked up to the FP relay and ignition switch, then runs to the FB. do the few checks i mentioned first. i also think the fuel pump relay is connected to the ignition module.. its bound to be something stupid...lol. and small no doubt, always is Edited March 16, 2008 by steelcabby Link to comment Share on other sites More sharing options...
Guest sjc Posted March 17, 2008 Share Posted March 17, 2008 (edited) hello mate...bear in mind i dont know how wires are routed or anything...just read the drawing and made a sketch of the bit your interested in. If ignition module (IM) is ecu then it looks like it needs to be plugged in. Main power is from fuse 7 (red wire just noticed i havent wrote it on) going to pin 30 on pump relay, when relay is pulled in voltage will go to pump via pin 87 BK/R wire (noticed i aint wrote that on either lol) then other side of pump to earth. I would start by testing V at pin 30, than check if relay is energising. If relay is energising and there is V at 30 then there should be V at 87. If V at 87 there should be V at pump unless wire is broke. If V at pump and its not running, its either knackered or no earth. If relay isnt going in check connections on coil and IM, relay earth and relay itself. Sketch is from 1986 onwards KE jetronic fuel injection, hope its right one. Hope its been of some help Edited March 17, 2008 by sjc Link to comment Share on other sites More sharing options...
Admin Paul Posted March 17, 2008 Author Admin Share Posted March 17, 2008 Hi mate, have you got the diagram for the 90 onwards EFI wiring? Paul Link to comment Share on other sites More sharing options...
Guest sjc Posted March 17, 2008 Share Posted March 17, 2008 shit...knew i should have asked first...no pm me a copy and i will do the same again Link to comment Share on other sites More sharing options...
badger Posted March 17, 2008 Share Posted March 17, 2008 shit...knew i should have asked first...no pm me a copy and i will do the same again hi fella when you've done paul's diagram can you either post it on here or pm me a copy as i'm wiring my own feul system up. sorry paul i didn't mean to hi-jack your post. Link to comment Share on other sites More sharing options...
Admin Paul Posted March 22, 2008 Author Admin Share Posted March 22, 2008 Just a quick update, it does need the ECU, plugged in and the pump primes. Thanks Paul Link to comment Share on other sites More sharing options...
Guest steelcabby Posted March 22, 2008 Share Posted March 22, 2008 proper job, thanks for the update. other people have bound to of had the same problem Link to comment Share on other sites More sharing options...
Recommended Posts