Fuel guage doesnt work - Pirate4x4.Com : 4x4 and Off-Road Forum

yota44 · 03-09-2006, 02:04 PM

I didnt know if anyone has had problems with their fuel gauge not workin. I have a 90 pathfinder. I didnt know if it was the sending unit itself or even mabye the gauge. I havnt tried either yet i wanted to see what anyone thinks.

TRed · 03-09-2006, 06:28 PM

Check under the rig and see if your gas tank has a big dent, mine does and the gaugewon't work.

JuniusBugg · 03-11-2006, 03:13 PM

My 720 had that problem - took the dash panel out, wiggled the electrical connectors, and it started working again.

yota44 · 03-11-2006, 05:02 PM

cool i will look at both. I hope its something easy i really dont want to pull the tank!

1bille1 · 03-16-2006, 05:28 PM

A dent could mess it up, but on a tank that old rust could be a big problem if it ever sat unused for awhile.

I've seen a tank 5 years newer froma Pathy. The sending unit mating surface on the tank has an O-ring that's supposed to seal it. This one wasn't anymore, as rust had "wedged up" the mating surface- higher than the O-ring-keeping it from sealing.

ENded up using some kind of super fuell system epoxy stuff when we put it all back together.

Also, it's possible the external wires going to the fuell sender is corroded.

If you do end up pulling the tank, I would give it's insides a good R/R(besides the sender "DEBUG", unless you're confident it's all good

And run it on fumes before you do pull the tank-much easier.

yota44 · 03-17-2006, 03:06 PM

cool thanks for the input!! I have about convinced myself to go ahead and drop the tank. Hope its not rust but knowing my luck it is. This pathy sat for awhile before i got it.

I have also thought it maybe the fuel sending unit. Since the pathy sat for about 2 years i was thinkin the float maybe fuel soaked and not be able to register. Dont know if this is possible.

Packman5280 · 03-17-2006, 03:43 PM

you can get to the fuel pump without dropping the tank. On pathfinders there is an access panel under the carpet. Pull up the carpet, remove three screws and there it is.

yota44 · 03-19-2006, 07:54 PM

You are kidding me! Thank god i didnt pull my tank today! Thanks alot for the info!!!

Packman5280 · 03-20-2006, 04:13 PM

I was under there yesterday, and there are actually 4 screws, but ya, it could save some time. That would suck to have the tank out, and then see the panel from the bottom.

yota44 · 03-20-2006, 06:20 PM

Sweet!! And again thanks for the input!

Plush_Darkside · 03-22-2006, 11:29 AM

Quote:

Originally Posted by 1bille1

Also, it's possible the external wires going to the fuell sender is corroded.

Would be my guess, found a short in my wires that made the guage read 1/4 tank off.

reaceracer · 03-29-2006, 02:58 PM

There is also a relay that goes out behind the dash. I had a guy make one for me for about 10 bucks. At the factory you have to buy the whole dash assembly and that was around $200. I will try to look for the link about the gas and water temp gauge. It was a very easy fix once i found out how to do it.

03-09-2006, 02:04 PM	#1 (permalink)
yota44 misunderstood Join Date: Mar 2005 Member # 45241 Location: Enid,Oklahoma Posts: 192	Fuel guage doesnt work I didnt know if anyone has had problems with their fuel gauge not workin. I have a 90 pathfinder. I didnt know if it was the sending unit itself or even mabye the gauge. I havnt tried either yet i wanted to see what anyone thinks.

03-09-2006, 06:28 PM	#2 (permalink)
TRed Registered User Join Date: Jun 2002 Member # 12100 Location: Priskitt AZ Posts: 1,168	Check under the rig and see if your gas tank has a big dent, mine does and the gaugewon't work. __________________ Quote: Originally Posted by randii if you're a Pickle, rolling down the trail in a Smurf, dispensing bowls of dicks. FWIW, I don't want to see pictures of that, either! Randii

03-16-2006, 05:28 PM	#5 (permalink)
1bille1 Registered User Join Date: Oct 2004 Member # 36499 Location: poway ,ca Posts: 127	A dent could mess it up, but on a tank that old rust could be a big problem if it ever sat unused for awhile. I've seen a tank 5 years newer froma Pathy. The sending unit mating surface on the tank has an O-ring that's supposed to seal it. This one wasn't anymore, as rust had "wedged up" the mating surface- higher than the O-ring-keeping it from sealing. ENded up using some kind of super fuell system epoxy stuff when we put it all back together. Also, it's possible the external wires going to the fuell sender is corroded. If you do end up pulling the tank, I would give it's insides a good R/R(besides the sender "DEBUG", unless you're confident it's all good And run it on fumes before you do pull the tank-much easier. Last edited by 1bille1; 03-16-2006 at 05:32 PM.

03-20-2006, 04:13 PM	#9 (permalink)
Packman5280 Registered User Join Date: Feb 2004 Member # 27777 Posts: 125	I was under there yesterday, and there are actually 4 screws, but ya, it could save some time. That would suck to have the tank out, and then see the panel from the bottom. Last edited by Packman5280; 03-20-2006 at 04:14 PM.

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03-11-2006, 03:13 PM	#3 (permalink)
JuniusBugg Registered User Join Date: Sep 2005 Member # 53251 Location: Cullowhere? Cullowhee! Posts: 6	My 720 had that problem - took the dash panel out, wiggled the electrical connectors, and it started working again.

03-11-2006, 05:02 PM	#4 (permalink)
yota44 misunderstood Join Date: Mar 2005 Member # 45241 Location: Enid,Oklahoma Posts: 192	cool i will look at both. I hope its something easy i really dont want to pull the tank!

03-17-2006, 03:06 PM	#6 (permalink)
yota44 misunderstood Join Date: Mar 2005 Member # 45241 Location: Enid,Oklahoma Posts: 192	cool thanks for the input!! I have about convinced myself to go ahead and drop the tank. Hope its not rust but knowing my luck it is. This pathy sat for awhile before i got it. I have also thought it maybe the fuel sending unit. Since the pathy sat for about 2 years i was thinkin the float maybe fuel soaked and not be able to register. Dont know if this is possible.

03-17-2006, 03:43 PM	#7 (permalink)
Packman5280 Registered User Join Date: Feb 2004 Member # 27777 Posts: 125	you can get to the fuel pump without dropping the tank. On pathfinders there is an access panel under the carpet. Pull up the carpet, remove three screws and there it is.

03-19-2006, 07:54 PM	#8 (permalink)
yota44 misunderstood Join Date: Mar 2005 Member # 45241 Location: Enid,Oklahoma Posts: 192	You are kidding me! Thank god i didnt pull my tank today! Thanks alot for the info!!!

03-20-2006, 06:20 PM	#10 (permalink)
yota44 misunderstood Join Date: Mar 2005 Member # 45241 Location: Enid,Oklahoma Posts: 192	Sweet!! And again thanks for the input!

03-29-2006, 02:58 PM	#12 (permalink)
reaceracer Registered User Join Date: Mar 2006 Member # 68945 Location: fresno,ca Posts: 41	There is also a relay that goes out behind the dash. I had a guy make one for me for about 10 bucks. At the factory you have to buy the whole dash assembly and that was around $200. I will try to look for the link about the gas and water temp gauge. It was a very easy fix once i found out how to do it.