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View Full Version : Walbro Install: Gas Gauge Always Reads Past Full

GripSpec
12-09-2012, 04:08 PM
A walbro fp was installed during my SR swap, and ever since my gauge has not read correctly. Most of the time it reads above the full line and sometimes wonders around a bit. A friend who was helping with my swap installed the fp while I was putting the motor in, so I have not personally seen the inner workings of the install. I have tried a couple different clusters to rule out any issues with that. I'm very unfamiliar with fuel systems, so I'm not exactly sure what to look for or test to diagnose this. Can the sending arm get stuck, or does this sound like a wiring/resistance issue? The gas gauge worked perfectly fine before installing the pump. Any help would be greatly appreciated.
801nismo104
12-09-2012, 04:36 PM
take out the pump and make sure the fuel level sender arm thingy isnt stuck on something
The Dude
12-09-2012, 06:58 PM
Sounds like a problem with the sending unit. Could be you did something when you removed it.
KoukiMonsta
12-09-2012, 08:58 PM
:rofl:take out the pump and make sure the fuel level sender arm thingy isnt stuck on something

Sounds like this to me
Jay24/7
12-09-2012, 11:36 PM
take out the pump and make sure the fuel level sender arm thingy isnt stuck on something

+1

Also check the wiring on the top of the fuel hanger, possibly shorting out causing the gauge to read full all the time.
GripSpec
12-12-2012, 08:18 PM
Thanks for the suggestions guys, I was able to take everything apart last night. I am very confused by what I found. All wiring is in working order and the fuel level sender works fine when it is pulled out of the tank. This lead me to think that the sender arm was just getting caught up on something as suggested above. After working on it for awhile I noticed that I had to put pressure on the pump hanger to get it to line up with the holes on the top of the tank. It seems as though the pump hanger is making contact with the metal baffling inside the tank. Has anyone ever heard of a problem like this?? I'm thinking about trying to bend the metal baffling a bit to take the pressure off the hanger/level sender but I'm not sure if that will work.