98 R34 Gtt Wont Start After Replacing Battery

[gav2154]

hey folks.

Can someone tell me please where i can locate the fuel pump relay on my 1998 r34 gtt skyline.

My cars up for sale, i've been away working for 4 weeks, came home to get the car runnning and sell it and the battery's ran completely flat and wouldnt take a jump start or any charge when hooked up to a car.

I replaced teh battery, but the car woulndt event start or ignition turn on. i figured i'd blown a fuse??

I checked teh fuse box under teh bonnet and yes i 'd blown the 80AMP Altenator Fuse. So off to shops i went and bought one.

I fited it with battery disconnected, hooked the battery up again, tried starting it but the engine wont fire up. Plenty of ooomfff in teh starter and battery but it

s like its not getting fuel.

I cant hear teh fuel pump in teh boot wizz up when i turn the ignition on, i checked the fuses in the drivers foot well, they all looked ok, including the 15amp fuel pump fuse, i checked it has 12v either side also.

I removed the fuel hose after the filter in teh engine bay and turned teh engine over, alas, no fuel coming through. now i know its a fuel problem.

Now i'm trying to find where to locate the standard fuel pump relay to see if it's that.

Can anyone tell me where i can find it and also if anyone has any other ideas on how to get her started id be very gratefull as i have 3 guys coming tonight to look at the car and it not being able to start is guna kill me.

also, should i be removing teh back seats and that little pannel which gives you access ontop of teh fuel tank to check for anything??

Getting in from teh boot is impossible as i have a custom $8k sound system installed lol,

cheers

Gav

greatly appreciate a text with advice

0422817158

[gav2154]

gutted no one has managed to give me any insight yet ???

t just seems weird how the car used to start no problem before and when the battery would run flat from the car being sat on the drive, id just jump start it and it would run fine. I changed the battery and had some bad arking which prob blew the 80 amp Altenator Fuse aswell as a few 10 amp ignition control fuses. Now, it cranks no worries, but jus dont hear the fuel pump energise. and i pulled off the main fule line coming of the fuel filter in the lhs engine bay and cranked her over and no fuel comes out so my probs obv fuel pump related. I just cant for the life of me find the fuel pump relay to check that. I've checked all my fuses are good.

are you able to hear your fuel pump kick in when u turn the ignition on yours???

I've spent the night pulling out my sound system from the boot as i read on the forum that the fuel relay in in the boot next to battery ontop of teh fuel tank body but there's nothing there, only 2 ecu type looking control units with a black casing attached to teh side with some sort of coils in them. doesnt look anything like the traditional 4 or 5 pin relays. this one has connectors which makes me think its not what im looking for, probably for traction control system or sumit.

I did however find my APEXI aftermarket ECU in the front left hand passenger footwell near the kick plate. and behind there , there seems to be some more relays, but i wouldnt know what ones to look at and besides, the wiring is very tight and i couldnt get the carpet up, i was knackered by this point so called it a day.

Just wondering if its maybe the immobiliser playing games with teh fuel pump or relay????

[R.3.2.G.T.R]

when u crank, does the tacho needle move?

remove your spark plug n check condition, might have flooded with fuel

fuel pump will buzz and pressurise the line, once pressurised u wont hear it again if u key off and on

check u voltage at fuel pump and if u can hook up a fuel pressure gauge to confirm its working

[gav2154]

Ok , so more doom and gloom.

I've managed to locate the ECU, it's an APEXI FC ECU & CONTROLLER ER34, ive connected my battery up again and ignition on, realised i have zero power on the hand controller for my APEXI ECU , therefore i recon i've either blown an in-line fuse before the ECU, or i've blown my ECU.

Either way, i'm looking at $1599 for another Apexi Fc Ecu and hand controller, or i buy a second hand stock ecu for $300 from nsw.

Im selling the car so prob cheaper i put in a stock ecu.

im trying to find a ecu wiring diagram for my car, can anyone help with that??? i want to confirm im getting power to ecu before i buy a new one.

My car is a 1998 R34 gtt Neo 6, RB25DET chassis number is 6u90000ER34005412 ENGINE NO: RB25285087A

I REALLY need a wiring diagram/ pin layout if anyone can help ????

[FeZ25]

Do you have the hand controller for the ECU?

Car won't fire up if the Apexi PFC has the boost controller option checked to "YES" if you don't have the boost controller addon.

Disable that and try and turn the car on.