supratoy Posted September 18, 2008 Share Posted September 18, 2008 Ok I thought my pump had went but it hasn't. Fuses seem all fine, What should I do? My mate said spray some carb cleaner in the filter intake pipe while try turning it, it came online for a sec but cut off again so I think there just isn't any fuel getting to the engine but fuse, pump are all ok. What should or can I do? Quote Link to comment Share on other sites More sharing options...
tDR Posted September 18, 2008 Share Posted September 18, 2008 Could be your timing has jumped (do you have aftermarket cam wheels or a belt / tensioner that could do with replacing?) and so it's firing at the wrong time. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 18, 2008 Share Posted September 18, 2008 Have you checked the EFI fuse's, if one has gone that will stop the injectors firing. Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 (edited) Could be your timing has jumped (do you have aftermarket cam wheels or a belt / tensioner that could do with replacing?) and so it's firing at the wrong time. Cheers, Brian. I have the stock cam pulleys and just had the belt changed at envy about 1k miles ago. Could this still be it ? Tricky-yeh checked the efi fuse(the ones ones on the egine bay yeh?)They seem fine Edited September 18, 2008 by supratoy add info (see edit history) Quote Link to comment Share on other sites More sharing options...
tDR Posted September 18, 2008 Share Posted September 18, 2008 Have your timing checked - only way to know for sure. I'd guess if the belt was recently done then it could be a possibility as the tensioner will have been disturbed when changing the belt. Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 O brian for got to say, you cant hear the pump come on would that still be timing are eletrical? Quote Link to comment Share on other sites More sharing options...
tDR Posted September 18, 2008 Share Posted September 18, 2008 You should at least hear the pump prime when you put the ignition to the on position but don't start it. Do you get all your dash lights on? I'm thinking maybe your immobiliser could be interfering? Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 It doesn't prime at all and I just put a new pump in earlier as I thought it was that. Ill need to see about the lights again but am sure they all did come on. Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 18, 2008 Share Posted September 18, 2008 Have you checked you are getting voltage to the fuel pump? Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 QUOTE=JustGav;2110322]Have you checked you are getting voltage to the fuel pump? Ive not done that [OOPS][/OOPS] If there is no voltage, what would I need to do? Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 18, 2008 Share Posted September 18, 2008 QUOTE=JustGav;2110322]Have you checked you are getting voltage to the fuel pump? Ive not done that [OOPS][/OOPS] If there is no voltage, what would I need to do? If there is no voltage there, then you would need to trace back. Next step would be to check that the fuel computer is getting power. There are 5 wires on that. The FC is located just behind the boot light on a RHD car (I'd assume the same is true on a LHD) Quote Link to comment Share on other sites More sharing options...
Dave222 Posted September 18, 2008 Share Posted September 18, 2008 Not fully up on this system but there is a seperate management unit for the 9 / 12volt fuel pump supply, I would work back from the pump wiring looking for the power supply. If you're getting volts at the plug on top of tank connection it must be the pump, if there's no power there go back to the control unit behind the passenger side boot space lining, near the boot light. Hope this helps, good luck. Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 18, 2008 Share Posted September 18, 2008 (edited) I'm not happy about saying this... but have you tried bridging the B+ and FP ports on the diag port in the engine bay, BUT for goodness sakes don't run it on it, it is okay as a quick check. Also, can't see anything from your profile, but is car stock ie any standalone's or fudgers that could bypass/affect normal wiring loom? Edited September 18, 2008 by JustGav (see edit history) Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 I'm not happy about saying this... but have you tried bridging the B+ and FP ports on the diag port in the engine bay, BUT for goodness sakes don't run it on it, it is okay as a quick check. Also, can't see anything from your profile, but is car stock ie any standalone's or fudgers that could bypass/affect normal wiring loom? Not tired bridging the B+ and FP, what would that show me, thats wrong? I have stock ecu, just walbro fuel pump. Only dodgy wiring was the electric fan but thats not taken off however the wiring is still all connected up. DAVE222- I just changed the pump over from the walbro to another new walbro. I'll have a go looking at the 9/12volt supply too. The car was running then suddenly lost all power but regained power for 10-20sec then nothing, if thats any help:( Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 18, 2008 Share Posted September 18, 2008 Not tired bridging the B+ and FP, what would that show me, thats wrong? I have stock ecu, just walbro fuel pump. Only dodgy wiring was the electric fan but thats not taken off however the wiring is still all connected up. DAVE222- I just changed the pump over from the walbro to another new walbro. I'll have a go looking at the 9/12volt supply too. The car was running then suddenly lost all power but regained power for 10-20sec then nothing, if thats any help:( Dodgy connection on the hanger? Is the loom connector in tight? Bridging FP and B+, bypasses the FC and just liven's up the pump. Quote Link to comment Share on other sites More sharing options...
Homer Posted September 18, 2008 Share Posted September 18, 2008 ECU 1 & 2 and ECU-B fuses will all cause this. Gav is correct on the first step to get the pump primed, check the voltage at the fuel pump ECU too with the diag ports bridged and let us know the result Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 18, 2008 Author Share Posted September 18, 2008 Dodgy connection on the hanger? Is the loom connector in tight? Bridging FP and B+, bypasses the FC and just liven's up the pump. The loom as in the fc connectors? Ill check this tommorrow if so. Also where are the diag ports for B+ and fp in the engine bay? Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 18, 2008 Share Posted September 18, 2008 Also where are the diag ports for B+ and fp in the engine bay? The diag port is on the front of intake plenum, it has diag written on it I believe. Just unclip it and open it up. Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 19, 2008 Author Share Posted September 19, 2008 The diag port is on the front of intake plenum, it has diag written on it I believe. Just unclip it and open it up. AH.. Cool, thanks:) Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 19, 2008 Author Share Posted September 19, 2008 (edited) The car fires up with the bridged B+ and FP in the diag port, Ok I forgot to check voltage on the fuel pump ecu:( Ill give that a go now. Started it back up but dont think the fc is got any voltage unless am not using the volt meter correctly. I used a nut thats attached to the cars shell to get the neg and the red end in all the plug ends from the fc and nothing on the meter. If Iam not getting voltage on the fc, what is it I need to do to fix my car? Edited September 19, 2008 by supratoy edit info (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 19, 2008 Share Posted September 19, 2008 Some of the more exotic alarms can cut the fuel pump feed. Has it got some exotic alarm? It's more often the alarms wiring that causes agg, rather than the alarm box itself. Could be worth considering? Has anyone fiddled around the passenger footwell area for any reason? Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 19, 2008 Author Share Posted September 19, 2008 Some of the more exotic alarms can cut the fuel pump feed. Has it got some exotic alarm? It's more often the alarms wiring that causes agg, rather than the alarm box itself. Could be worth considering? Has anyone fiddled around the passenger footwell area for any reason? Its just a cat1 alarm, nothing too special really. No one fiddled around the passenger footwell lately. I put my old std supra j-spec ecu in yesterday, I was just trying it out incase something went faulty with the ecu. But this is all after the car would start. Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 19, 2008 Share Posted September 19, 2008 I put my old std supra j-spec ecu in yesterday Alarm bells.... thought you said it had a stock ECU...Why are swapping ecu's? It suddenly sounds like their have been additional issues or something else to cause this. Quote Link to comment Share on other sites More sharing options...
supratoy Posted September 19, 2008 Author Share Posted September 19, 2008 Alarm bells.... thought you said it had a stock ECU...Why are swapping ecu's? It suddenly sounds like their have been additional issues or something else to cause this. No I do have stock ecu in this supra but I had one from my old supra too:) Quote Link to comment Share on other sites More sharing options...
Pig Posted September 19, 2008 Share Posted September 19, 2008 Have you checked the relay? Does a std fuel system run a relay? Quote Link to comment Share on other sites More sharing options...
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