Fuel Guage Problems On My R34 Gtt... Some Advice Please People..

[Daz305]

hey guys,

i have an r34 GTT, nismo aftermarket 300km dash cluster.

this morning got in my car and the fuel guage had dropped from 1/2 to a 1/4 overnight...

i had only done about 250km. so started it up and then on my way home and it dropped down another 1/4 about over the next 10 mins and the light came on...

then went back up to a 1/4 tank... =S

any1 able to shed some light on this as i have no idea? tried searching for some answers but didnt find anything...

car did stutter when it hit boost i think last week but i had very low fuel at the time... dunno if this is at all related...

any answers would be great thanks...

[Tree Fitty]

Hey dude. Exact same thing happens in my GTT and i have the stock cluster. No idea what causes it.

[mad082]

were you driving around somewhere hilly? was the car parked on a slope overnight? if so then that will cause the fuel gauge to fluctuate. in the missus pulsar if i have under 1/4 of a tank and go up a hill the fuel light will come on, and if i'm driving around hill places with low fuel then the gauge will fluctuate. this is simply because of the location of the sensor and the way that the fuel will slosh around as it gets lower.

[choyda]

I had this in mine. You'll need the pull your fuel pump out and just make sure nothing has been dislodged. I happen to replace my pump at the same time (upgrade) and all was good.

[Daz305]

phil how annoying is it haha.

nah it wasnt around anywhere hilly i was parked on flat ground over night so im fairly sure thats not it but thanks for the idea..

thanks damien, is it obvious that something is displaced =S also its not goin to do any harm the way it is atm is it? as i have exams coming up next week and would prefer to not be messing around with my car until the end of next wk..

thanks

[Daz305]

saying all that driving around later today i think it may have stopped.....

is there a chance it may have fixed itself?

cheers

[choyda]

Possibly. Its quite easy to get to the pump on a GTT. Not the case with GTRs though. I noticed that about 50%, the gauge was accurate then once I hit half, it was yo-yo mode. I just had to rely on the trip kms. Then I put the GTR pump in and must have solved it at the same time.

[Daz305]

yer that sounds similar to mine it only played up once it was below halfway...

possibly it could have fixed itself? or possibly it could do damage?

mayb i shoudl just have a look tomorrow, my boost guage is playing up to my guages arnt being very friendly lol

[scotty nm35]

It sounds like the carbon tracks on the fuel sender in the tank are dirty or worn. Try cleaning them with metho or contact cleaner and a toothbrush.

The faulty boost gauge will be a dry joint on the sensor board in the engine bay. There are a few diy repair threads if you search around. Do you have a soldering iron?

[maddowse]

can anyone tell me how big a standard fuel tank is in an r34 ?? (i have a sedan so dont know if its different) but my car gets to empty and i only fill it up buy 42leters so ether they have a small fuel tank or my fuel gauge reads wrong ??

[mad082]

can anyone tell me how big a standard fuel tank is in an r34 ?? (i have a sedan so dont know if its different) but my car gets to empty and i only fill it up buy 42leters so ether they have a small fuel tank or my fuel gauge reads wrong ??

pretty sure it's about 65L. fuel light generally comes on with about 10L to go. the needle will usually be at the E line when the fuel light comes on so you have a bit of a reserve to get to a fuel station

[Daz305]

It sounds like the carbon tracks on the fuel sender in the tank are dirty or worn. Try cleaning them with metho or contact cleaner and a toothbrush.

The faulty boost gauge will be a dry joint on the sensor board in the engine bay. There are a few diy repair threads if you search around. Do you have a soldering iron?

yer i found some threads on the boost guage and do have a soldering iron around but havent gotten around to doin that as im pretty used to it, its fine but for now its the fuel guage that id like to fix first.

any chance you could shed some light on how id go about doin that scotty..?

as i really have no idea...

[Daz305]

turns out it is only a problem when the fuel guage goes below half...

it will seem to drop down slowly to the light then come back on...

still not sure wat to do about this... and how to fix it lol

[Wacky Dee]

same issue here with the fuel gauge ... let the tank go pretty dry once (well not that dry probably 5l left in it) but more dry than usual and from next day it's been "in yoyo mode" ever since.

How do you get to the fuel sender tracks in the tank ...? Does the fuel tank have to be removed? Any tips appreciated .. its not a big deal because I can rely on the trip meter but it annoys the crap out of me when the empty tank light comes on randomly