Jump to content
SAU Community

Fuel Pump Or Afm?

Smackeyno1

By Smackeyno1,
in General Automotive Discussion

 Share

Recommended Posts

Smackeyno1 Apprentice

Smackeyno1

Posted
Posted

Hey,

Wondering if anybody has come across this bitch of a problem before?

Have an RB20 and when im moving pretty quickly the fuel starts cutting out on me.

I have replaced the fuel filter and that didnt make any difference - my theory is that it is either the fuel pump not activating or the Air Flow Meter.

Im gonna have to buy one or the other but want to get the best idea of what it may be b4 i splurge.

Any advice would be much appreciated.

Thanks,

Smackey

Link to comment
https://www.sau.com.au/forums/topic/138672-fuel-pump-or-afm/
Share on other sites
Smackeyno1 Apprentice

Smackeyno1

Posted
  • Author
Posted

Well its very random. You can drive for a couple of K's and there will be no jitters at all. Then all of a sudden the cars starts bucking like a rodeo bull because its not getting constant fuel supply. Then it will die. If i keep starting the car, it eventually settles and i can drive it again. That process repeats itself.

Whether theres a lack of fuel or air to the plenum, i dont know. Could be something completely different.

SLIPPERY Experienced

SLIPPERY

Posted
Posted

sounds like AFM. When you pass over bumps in the road it can wiggle the wires to the AFM just enough that the solder joins lose contact. With my car i can just touch one of the wires and the car stalls.

Also, when the car 'jitters' the air isnt being metred properly thus playing havoc with air/fuel ratios and no power/chugging.

you can fix it with a soldering iron and solder. take apart the AFM and re-solder the pins that connect the AFM to the wires. if youre confused, see the tutorial section

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

AFM................. :O

When I hit a slight ridge or bump the car feels like its just run out of petrol and only for a split second

then is ok.

I have a new petrol pump ,regulator and injectors.

I thought it was the ignitor not getting any earth,.

Now do a search and get the DIY AFM info like what i am just about to do. :P

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

    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      Welcome back brother 
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      I got back to Japan in January and was keen to get back on track as quickly as possible. Europe is god-awful for track accessibility (by comparison), so I picked up a first-gen GT86 in December just to have something I could jump into right away. The Skyline came over in a container this time and landed in early January. It was a bit battered after Europe, though—I refused to do anything beyond essential upkeep while it was over there. The clutch master cylinder gave out, and so did the power steering. I didn’t even bother changing the oil; it was the same stuff that went in just before I left Japan the first time. Naughty. Power steering parts would’ve cost double with shipping and taxes, so knowing I’d be heading back to Japan, I just postponed it and powered through the arm workout. It took a solid three months to get the car back on the road. Registration was a nightmare this time around. There were a bunch of BS fees to navigate, and sourcing parts was a headache. I needed stock seats for shaken, mistakenly blew 34k JPY on some ENR34 seats—which, of course, didn’t fit—then ended up having the car’s technical sheet amended to register it as a two-seater with the Brides. Then there’s the GT86. Amazing car. Does everything I want it to do. Parts are cheap, easy to find, and I don’t care what anyone says—it’s super rewarding to drive. I’ve done a few basic mods: diff ratio, coilovers, discs, pads, seat, etc. It already had a new exhaust manifold and the 180kph limiter removed, so I assume it’s running some kind of map. I’ve just been thrashing it at the track non-stop—mostly Fuji Speedway now, since I need something with higher speed after all that autobahn time. The wheels on the R34 always pissed me off—too big, and it was a nightmare getting tires to fit properly under the arches. So I threw in the towel and bought something that fits better. Looks way cleaner too (at least to me)—less hotboy, less attention-seeking. Still an R34, though. Now for future plans. There are a few things still outstanding with the car. First up, the rear subframe needs an overhaul—that’s priority one. Next, I need to figure out an engine rebuild plan. No timeline yet, but I want to keep it economical—not cutting corners, just not throwing tens of thousands at a mechanic I can barely communicate with. And finally, paint. Plus a bit of tidying up here and there.  
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Nope, needed to clearance under the bar a little with a heat gun, a 1/2" extension as the "clearancer", and big hammer, I was aware of this from the onset, they fit a 2.0 with this intake no problems, but, the 2.5 is around 15mm taller than a 2.0, so "clearancing" was required  It "just" touched when test fitting, now, I have about 10mm of clearance  You cannot see where it was done, and so far, there's no contact when giving it the beans Happy days
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      It's been a while since I've updated this thread. The last year (and some) has been very hectic. In the second-half of 2024 I took the R34 on a trip through Germany, Italy, France and Switzerland - it was f*cking great. I got a little annoyed with the attention the car was getting around Europe and really didn't drive it that much. I could barely work on the car since I was living in an inner-city apartment (with underground parking). During the trip, the car lost power steering in France - split hose - and I ended up driving around 4,000kms with no power steering.  There were a few Nurburgring trips here and there, but in total the R34 amassed just shy of 7,000kms on European roads. Long story short, I broke up with the reason I was transferred to Europe for and requested to be moved back to Japan. The E90, loved it. It was a sunk cost of around EUR 10,000 and I sold it to a friend for EUR 1,500 just to get rid of it quickly. Trust me, moving countries f*cking sucks and I could not be bothered to be as methodical as I was the first time around.
    • MBS206
      NC MX5

      By MBS206 · Posted

      I assume clearances were all a-okay?
×
×
  • Create New...