Jump to content
SAU Community

Help Me Troubleshoot? Fuel Pump Not Getting Power

decoyslikecurves
 Share

Recommended Posts

decoyslikecurves Enthusiast

decoyslikecurves

Posted
Posted

Hey all,

I just swapped in an rb20det from an r32 skyline into my ex-rb25de c33 laurel. I had the car wired up by a workshop on the goldcoast who do this sort of thing all the time, and they tested the fuel and spark when I picked it up - all was working.

I got home, put in the radiator, filled up fluids (clutch/GB/drained motor - refilled etc), drilled some holes for the standard Side mount intercooler (just using it for the moment while I iron out any kinks), fitted intercooler and then grounded places on the loom.

I went to try and start the car, but the battery was a little flat and all I got was clicking relays - so then I hooked it up to another car and tryed to jump it - the motor was turning over and over nice and freely but was not firing. First in the troubleshooting list was fuel, so I removed the input line that goes from the filter to the fuel rail (correct one) and of course - no fuel.

I then realised I didn't hear the factory pump prime when I turned the key to "on" during starting attempts, so I bust out the multimeter and measured the power line to the fuel pump (supposeably the white one with pink/purple stripe) while a friend switched car to "on" and even tried to start it. NO POWER to the fuel pump.

Now i have to find out what has changed - first guess was a relay or fuse - so I checked all the fuses under dash and in bonnet. All were fine.

Next I played around with some of the relays under bonnet and in dash - seemed to be working okay so far. I can't really tell which is for the fuel pump though - if anyone knows this can they let me know?

The other thing I checked was if the green relays next to the computer where okay by swapping them with the ones out of my r32 halfcut. It seemed to make no difference. Using the multimeter to check the wires to the green relays, one of them was getting a really weak signal when cars ignition was on.

So far thats about as far as I have got - pretty clueless where to go from here.... Can anyone give me a hand?

decoyslikecurves Enthusiast

decoyslikecurves

Posted
  • Author
Posted

I'll be honest with you - theres some scary lookin electronics in there - I'm not so super with this sort of stuff - I really wish I could just whip something up like that but I really have no experience with it...

Thankyou for the link though - if it has to come to it, I'll get an auto electrician to come and do it for me!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • cosline
      R32 gtr transmission strength, billet plate

      By cosline · Posted

      Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Rezz
      Spotted on the street....

      By Rezz · Posted

      Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
×
×
  • Create New...