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Unread 01-10-2006, 09:54 PM   #1
PHDinYJ
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fuel gauge not working after new pump

I installed a new fuel pump and now my gas gauge doesn't work. What did I do wrong? It was stuck on full but now its stuck on empty.

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Unread 01-10-2006, 09:57 PM   #2
jeepholic
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The long rod on the side of the pump assembly is the sending unit. I don't kow what you drive, but most have it. The float on the end goes up and down to tell you how much gas you have. Did you bend that rod?
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Unread 01-11-2006, 04:53 AM   #3
PHDinYJ
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sorry, 93 Limited, 4.0. I don't think it was bent, I installed it right out of the box.
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Unread 01-11-2006, 06:30 AM   #4
greasefingers
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Short of pulling the pump out again and inspecting it, you really cannot do much. If you want to figure out if it is the sender or the gauge (not likely the gauge) you could measure the resistance at the connector with a full tank of gas and compare it to the resistance with an empty one. If the resistance does not change, then the float is probably stuck. The very least you can do is unplug it and then plug it back in again to make sure that the connector is properly seated.
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Unread 12-19-2014, 09:06 PM   #5
dp11
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old thread but i just put a new pump in my 98 limited to fix a hard start issue. I think the hard start is fixed but now my fuel gauge is reading empty. After the install I put about 4 gallons in and went straight to the gas station to fill up. Still says empty. My thoughts were this is either the float (which would suck, because I put the hitch and guards back on already) or the electrical connection. Are there any other ideas?
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Unread 12-19-2014, 11:37 PM   #6
Uniblurb
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You may have better luck troubleshooting or finding answers over in the XJ forum.

http://www.jeepforum.com/forum/f11/

Regardless, if you went with something like an Airtex fuel pump assembly that could be the problem with your fuel sending unit or float. Heard of lots of problems with them here.
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Unread 12-20-2014, 12:59 AM   #7
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Does it have reference marks on the pump? If they are not aligned you may have jammed the float against the tank.

fuel-pump-install.jpg
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Unread 12-23-2014, 12:27 AM   #8
dp11
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Quote:
Originally Posted by coralman View Post
Does it have reference marks on the pump? If they are not aligned you may have jammed the float against the tank.

Attachment 1756194
It does and I installed it correctly. The only thing I could think is that I maybe did jam it agains the front of the tank as I was getting it down in the tank. I kind of twisted it in clockwise to the correct position which would put the float close to the front of the tank.. possibly jamming and bending it. Later that night i went to double check and the gauge went to full right on the key turn. Maybe it got sloshed out of being stuck. I am still worried that it is ****ed up though. The only way to tell is burn some fuel i guess..
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