Galen Posted August 27, 2018 Share Posted August 27, 2018 Meant to be getting ferry to England Friday morning for JAE but car has started to blow efi fuse. Only seems to happen under load. Just started doing this out of nowhere, nothing has changed to cause it. Car has EMU wired in and AVCR and walbro pump. Wiring has been checked on ecu and all is ok, plugged out boost controller and still blew fuse. Any suggestions, really need to sort it asap! Gonna be a long drive if im changing fuses every few miles Quote Link to post Share on other sites
Flaminsam Posted August 27, 2018 Share Posted August 27, 2018 The efi fuse also powers the fuel pump. I had issues with my fuel pump blowing fuses as it was breaking down internally. Hopefully you will get sorted for jaE. Quote Link to post Share on other sites
Socks Posted August 28, 2018 Share Posted August 28, 2018 How old is the fuel pump? Quote Link to post Share on other sites
H_D Posted August 28, 2018 Share Posted August 28, 2018 (edited) The efi fuse is for spark and fuel. As mentioned above check fuelpump wiring and also the distributor wiring Edited August 28, 2018 by H_D Quote Link to post Share on other sites
Galen Posted August 28, 2018 Author Share Posted August 28, 2018 Pump is in it about 6 years or so Thanks lads, hopefully get it sorted for the spin over! Quote Link to post Share on other sites
Galen Posted August 28, 2018 Author Share Posted August 28, 2018 Swapped fuelpump, still blowing fuse Quote Link to post Share on other sites
Socks Posted August 29, 2018 Share Posted August 29, 2018 All the earths secure in the engine bay? Quote Link to post Share on other sites
RobSR Posted August 29, 2018 Share Posted August 29, 2018 There’s quite a few things on the main EFI fuse. Firstly check the feed to it from the battery, there is a 15A fuse before the efi relay from the battery from memory. Check the current it is drawing. Guessing you have a multimeter or can get access to one? You then have a feed that goes from this to the ECU, again check this, and the ECU itself. Injectors and Coil are also powered by this, so same applies as above. It is ground by the left hand fender, check this and re ground if necessary/for peace of mind. The fuel pump relay feeds from the main efi relay also. Again check this and it’s grounds. The original boost control solenoid is powered from the efi relay. Are you still using this? The other air con / icv are also powered by this. Check all the above and you should find one of them causing the issue. Quote Link to post Share on other sites
Galen Posted August 29, 2018 Author Share Posted August 29, 2018 I'll get back at the car this evening and check all, thanks a lot for the help lads, really appreciate it! Quote Link to post Share on other sites
monty1991 Posted September 5, 2019 Share Posted September 5, 2019 ever find your fault? my car has started to do this 😕 Quote Link to post Share on other sites
RobSR Posted September 6, 2019 Share Posted September 6, 2019 On 9/5/2019 at 8:05 AM, monty1991 said: ever find your fault? my car has started to do this 😕 Have you tried what I said above? It’s going to be one of those items as they’re the only things on the circuit Quote Link to post Share on other sites
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