Question about 1999 Jeep Grand Cherokee

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The fuel gauge in my '99 Jeep Grand Cherokee Laredo displays half a tank as full and full as full. Replaced the sending module and instrument cluster. What else could be the problem?

Fuel gauge does not go down to empty. Dropped the tank and replaced the fuel pump module w/ sending unit. That didn't work, so I replaced the instrument cluster, but that also hasn't worked.

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  • 89 Answers

It has to be the float, may need recalabrated

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

SOURCE: electrical issues with a 1994

sounds like pickup coil issue found inside distributure sorry for spelling

Posted on Nov 04, 2008

  • 6 Answers

SOURCE: 92 Jeep Cherokee Laredo odometer broke

I have the same problem on my 1992 cherokee...it's the vehicle speed sensor...it's located at the transmission/transfer case.....

Posted on Dec 21, 2008

  • 13 Answers

SOURCE: 1993 Jeep Grand Cherokee gas gauge reads empty but tank is full.

Fuel level sending units are known to go bad on these.

Posted on Jun 22, 2009

ZJLimited
  • 17970 Answers

SOURCE: 1993 Jeep Grand Cherokee Fuel Gauge not working

There could be two problems here:
1. That buoy floating tank is not working properly
2. That the electrical system that fails to submit the dashboard.

Review this information:
- ZJ-Secc-8E-Instrument-Cluster-and-Gauges
Page 2 - Fuel Gauges description
Page 4 - Voltimeter/Tachometer/Fuel Gauge/Low Fuel Inoperative
Page 10 - Specifications
- ZJ-Secc-14-Fuel-System
About Fuel Tank components
- ZJ-Secc-8W-Wiring-Diagrams
Fuel Tank and Gauge & Sensor Units Sending (Page 93 and next)

Good luck... and remember rated this help.

Posted on Aug 14, 2009

  • 85 Answers

SOURCE: 89 jeep Grand Wagoneer fuel gauge not reading.

Your mechanic may be right in saying the tank may not have baffles, but if the gauge goes down and stays down this is a sign that the float arm may be getting stuck on something, this could be the side of the tank or if there are baffles and he didnt see them down in the tank the arm may getting hung up on the baffle. It is normal for a fuel gauge to go up and down when the tank is half full, but only if there arent any baffles.

Posted on May 18, 2010

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1 Answer

Fuel gauge is not readin properly


The fuel level sending unit is defective. You will need to remove the fuel tank from the truck and replace the fuel pump module which contains the fuel level sending unit.

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HI, i have a problem with my 92 grand Cherokee Laredo gas gauge. the gauge says its half a tank all the time , when i turn the car off it still says half, not sure if it the wiring & if it is how to...


Start by checking your instument cluster fuse as it may have blown. Unfortunately the fuel gauge sending unit is a part of the fuel pump inside the fuel tank. The sending unit may have gone bad even though the pump is still working. to replace the pump it will require dropping the fuel tank to get to it unless there is an access plate above the tank in the rear of the vehicle.

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My 2004 Jeep Grand Cherokee Laredo keeps stalling and bucking while driving and then will completely die when I come to a full stop. Also the gas gauge will be at 1/2 a tank then drop to E and come back...


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It sounds as if the sending unit (located in the tank) is wearing out
Does it work better at some capacities then at others if so the is the sending unit. I know I have seen some gauges read fine at nearly full to 3/4 tank, after which the gauge falls right to zero.
I hope this may have helped,
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My 97 Grand Cherokee Laredo has the display screen for service and notification of low fluids and shows the jeep body. It tells me how many miles til my next service and so forth. I was wondering what...


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I hope this helps! :)

Aug 31, 2009 | 1997 Jeep Grand Cherokee

1 Answer

1993 Jeep Grand Cherokee Fuel Gauge not working


There could be two problems here:
1. That buoy floating tank is not working properly
2. That the electrical system that fails to submit the dashboard.

Review this information:
- ZJ-Secc-8E-Instrument-Cluster-and-Gauges
Page 2 - Fuel Gauges description
Page 4 - Voltimeter/Tachometer/Fuel Gauge/Low Fuel Inoperative
Page 10 - Specifications
- ZJ-Secc-14-Fuel-System
About Fuel Tank components
- ZJ-Secc-8W-Wiring-Diagrams
Fuel Tank and Gauge & Sensor Units Sending (Page 93 and next)

Good luck... and remember rated this help.

Jun 13, 2009 | 1993 Jeep Grand Cherokee

1 Answer

1993 Jeep Grand Cherokee gas gauge reads empty but tank is full.


Fuel level sending units are known to go bad on these.

Jun 13, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Fuel gauge always reads full and low fuel light won't work


Sounds like you have a short most likely a bad fuel sending unit located as part of the fuel pump. Most of the time you have to replace the pump because the pump and the sending unit are as one. Have you been to an Auto Parts store like Advanced Auto or Autozone? That's also a great source of ideas when you get stumped.

Good Luck. Hope this helped.

Apr 03, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Fuel gauge


you either have a bad sending unit, which iit is in the fuel pump assembly in the tank or a hole in the float and it fills with gas and sinks, which it's also on the fuel pump assembly in the tank or a bad fuel gauge in the instrument cluster. it's more than likely a sending unit problem, jeeps are bad about the sending unit to quit working

Dec 31, 2008 | 1998 Jeep Cherokee

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