2005 fuel gauge not reading correctly

[Chippy]

I’ve searched some other threads but I’m not sure I found one with this exact issue.

Took a little day trip today and my Jeep was a little less than 1/4 tank full so I stopped to fuel up. Put the nozzle in and it clicked off after only 5 gallons. I started up the jeep and the gauge was showing 3/4 full.

Why would this be? I didn’t want to continue trying to pump in case it was full and the gauge is wrong. Hard to believe it only took 5 gallons though.

Anyone gone through something similar? Any easy vent or valve I can check that may have made it click early?

 

[Feralkid]

Bad sending unit or possibly corroded connector.

 

[Chippy]

Any way I can test a sending unit without having to drop the tank?

Is there any chance the gauge is accurate and the pump is just clicking earlier due to splash back/pressure in the tank due to clogged vents?

 

[macleanflood]

Thread 'Wrangler TJ Gas Overflow Fix'

Nov 11, 2015

The Real Fix

The issue of gas "burping" out of the filler neck right after the pump clicks off when the tank is full is a fairly common issue among Jeep Wrangler TJs. The cause of this is the ethanol in the gas causing plastic parts in the Inlet Check Valve (ICV) to bind and not close quickly enough to prevent fuel back-splash when full.

Owners of 2005 - 2006 TJ Wranglers were left up shit creek by Chrysler and the NHTSA on this one. '07 and newer got a warranty extension (NHTSA closed the investigation taking the heat off Chrysler) '05-'06 owners got the shaft. There's...

• Chris
• fuel spill fuel tank overflow gas
• Replies: 614
• Forum: TJ How-to Guides

• 

 

[Link]

Thread 'Wrangler TJ Gas Overflow Fix'

Nov 11, 2015

The Real Fix

The issue of gas "burping" out of the filler neck right after the pump clicks off when the tank is full is a fairly common issue among Jeep Wrangler TJs. The cause of this is the ethanol in the gas causing plastic parts in the Inlet Check Valve (ICV) to bind and not close quickly enough to prevent fuel back-splash when full.

Owners of 2005 - 2006 TJ Wranglers were left up shit creek by Chrysler and the NHTSA on this one. '07 and newer got a warranty extension (NHTSA closed the investigation taking the heat off Chrysler) '05-'06 owners got the shaft. There's...

• Chris
• fuel spill fuel tank overflow gas
• Replies: 614
• Forum: TJ How-to Guides

• 

This right here. Good chance. Did it spit some gas back at you?

Replace the fuel pump too while you have it apart.

 

[Chippy]

This right here. Good chance. Did it spit some gas back at you?

Replace the fuel pump too while you have it apart.

No gas spitting. Just the pump clicked off early. This thread would imply that my fuel gauge is accurate though, and it’s a splashback issue.

Guess I actually am almost out of gas then haha

 

[Link]

It’s an easy fix if you are handy and have tools. Just takes some time to drop the tank. Run the tank as low as you dare before you start. Recommend you have a way to pump out the remaining fuel once you have the tank out. Makes it much easier to lift the tank back into place if the tank is empty. A floor jack is invaluable.