slickyddyer Posted November 19, 2011 Share Posted November 19, 2011 Driving out of town today my skyline died. Checked spark - roger that Checked fuel - negative Towed home and listened for fuel pump - negative Removed fuel pump and tested it on battery - It works! So put it back and it won't go. Just going to point out at this stage its link g4 storm computer powered so no afm or o2 sensor. Dyno tuned and a few cheeky mods. So I'm thinking a relay or lose wire or computer doing something odd. But I'm no expert. Just a lowly drainlayer. Maybe you are?... I don't even have a multi meter so this may be beyond me. Pity If I have to take time off work to tow it somewhere and get it sorted! $$$!!! What you think? Quote Link to comment Share on other sites More sharing options...
crustywhip Posted November 19, 2011 Share Posted November 19, 2011 Is the relay clicking on and off? If not check for power there and then back to the ECU. Shouldnt be to hard but will require a muti meter or test light. Make one out of an old bulb men Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 19, 2011 Author Share Posted November 19, 2011 What relay? where would it be? under bonnet? Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 19, 2011 Author Share Posted November 19, 2011 Checked relay in boot. No clicking Quote Link to comment Share on other sites More sharing options...
DJZ Posted November 19, 2011 Share Posted November 19, 2011 Is there a fuse anywhere near the relay? As mentioned above you really need a multimeter or test light. Where are you in the country? Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 19, 2011 Author Share Posted November 19, 2011 Can't see one, And if it blew I'd say theres an issue. I am in Christchurch Quote Link to comment Share on other sites More sharing options...
sholdowa Posted November 19, 2011 Share Posted November 19, 2011 A lot of (euro at least) cars have a cutout on the power circuit for the fuel pump, which triggers on rapid deceleration - eg a crash. You may have tripped that. Quote Link to comment Share on other sites More sharing options...
felixx Posted November 19, 2011 Share Posted November 19, 2011 what part of chch? I have a multimeter in redwood you can borrow. Will be going thru kaiapoi in the morning Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 19, 2011 Author Share Posted November 19, 2011 Shirley Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 19, 2011 Author Share Posted November 19, 2011 found computer. Checked all fuses. seem all good. theres 3 relays on it too and they all seem to click when key turned. found the wire from it to the fuel pump too. the relay in the boot doesn't seem to click but it may have been disconnected?? looks like the wire to it has been cut and replaced with the one going to the link. still don't know what its deal is. going to bunnings to get a hose clamp. man the fuel pumps are assholes to take out and put back in! Quote Link to comment Share on other sites More sharing options...
efp0wa Posted November 19, 2011 Share Posted November 19, 2011 Are you sure the pump was working? Check the CAS in the engine bay Quote Link to comment Share on other sites More sharing options...
JoKer Posted November 20, 2011 Share Posted November 20, 2011 Removed fuel pump and tested it on battery - It works! What you think? I think its not getting power : check connectors/plugs etc Suabrus have a habit of the back seat sitting on the wire and wearing into it causing a break Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 20, 2011 Author Share Posted November 20, 2011 Yes I'm sure the pump was working when I had it out on a battery I think its not getting power but I put a multi on it earlier and one of the wires was reading 12v but the one that goes to the link computer only goes from 0.8v (key off) to 1.8v (key on) All the relays are clicking by the link computer but not the one in the boot between the tail lights. Took the relay out (the green boot one) and tested the input wires and they both read 12v (key on) so maybe it needs replacing but who knows. Not me Quote Link to comment Share on other sites More sharing options...
DJZ Posted November 20, 2011 Share Posted November 20, 2011 To start with the basics do you understand how a relay works? Normally there are two terminals that are the switch and there are usually 2 or 3 other terminals, 1 or 2 will go to the load(s) to either ground it or supply 12v and one will either go to ground or to a 12v supply. Follow the wires from the fuel pump and see where they go, if there is red and black is the black one grounded to the body somewhere? Does the relay look like a factory Nissan one or aftermarket? Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 20, 2011 Author Share Posted November 20, 2011 Yes, I understand how a relay works. The wires go where they normally go except one that goes to the link computer. Yes there is a black one grounded in the boot. Quote Link to comment Share on other sites More sharing options...
Escorto. Posted November 20, 2011 Share Posted November 20, 2011 So youve got two 12v pins. thats good. those two wires are probably joined just inside the loom The computer usually doesn't supply power to switch the fuel pump relay. in my cef it is - switched for example It an earth switch. test continuity between earth and the wire in the boot. relay pin number 1 or 2 The switch will only come on to prime when you turn the key on. then it'll turn off untill the CAS is turned. Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted November 20, 2011 Author Share Posted November 20, 2011 Got an auto sparky coming tomorrow. Will let you know what he finds. Quote Link to comment Share on other sites More sharing options...
slickyddyer Posted January 21, 2012 Author Share Posted January 21, 2012 Was a blown relay from water leaking into and around the link computer. Someone installed the 3 relays in upside down so water can get into them. Sorted Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.