Filled up at noon ,start it up after work and now my fuel gauge reads about 1/4 full. Later it may read 3/4 full. This has been going on for a couple of months. Does not stay consistent with fuel used. Any suggestions?
Thanks
Thanks
Inaccurate Fuel gauge
- Thread starter Kevin E
- Start date
The only likely possibility of that is a bad fuel gauge sender which is spot-welded onto the side of the fuel pump assembly. The fix would require replacing the fuel pump assembly, as shown below.
That black float on the bent rod at the lower right below attached to the exterior housing is what drives the fuel level gauge sender located in the very center.
That black float on the bent rod at the lower right below attached to the exterior housing is what drives the fuel level gauge sender located in the very center.
Unfortunately, the part that is responsible for the fuel level is also part of the fuel sending unit - so it would be basically a fuel pump change :/
Thanks. How involved is a new fuel pump? Brand recommendations? Cost?
Can I leave it alone without any issues with the actual fuel pump?
Can I leave it alone without any issues with the actual fuel pump?
Sure, if it isn't having fuel issues yet - just go by mileage!
Replacing it involves dropping the gas tank, and accessing it through the top of the tank. As for what brand? Mopar.
wermopar has them for just over 400 for the 19gallon tank one. It's a lot, but it'll last a loooong time!
Just had mine changed this fall, and it is better than ever.
For the fuel pump brand, it's unlikely you'll still be able to find a Mopar for anything as old as your 98 TJ. Instead, look for a Bosch which is easily found on forums like Amazon.com. A lot of us believe Bosch is the OEM manufacturer of the Mopar pump. Not to mention the Bosch is about half the cost of the Mopar when it was available.
Wermopar shows it for $403.65 but they often show things in stock only to say they don't have it when an order is actually placed.
The Bosch for your '98 is for sale on Amazon.com for $187.88 at https://www.amazon.com/dp/B000BZJDK2/?tag=wranglerorg-20
I've been running a Bosch for years and it's really been good. The Jeep even starts right up after sitting a month without being started, no check valve leakage at all which is rare.
Wermopar shows it for $403.65 but they often show things in stock only to say they don't have it when an order is actually placed.
The Bosch for your '98 is for sale on Amazon.com for $187.88 at https://www.amazon.com/dp/B000BZJDK2/?tag=wranglerorg-20
I've been running a Bosch for years and it's really been good. The Jeep even starts right up after sitting a month without being started, no check valve leakage at all which is rare.
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No, that's all that is needed. Beside an extra-large strap wrench to make its removal and installation easier.
This is why the strap wrench would be good to use, that big white nylon lock ring has to be removed and tightened pretty good afterward to keep it leak free. That's the fuel pressure regulator I'm holding which comes in the Bosch kit.
P.S. Most strap wrenches aren't big enough, you need a bigger than average size to fit the ring. I found mine in my Home Depot plumbing department, the strap wrenches they had in the tool section weren't big enough.
P.S. Most strap wrenches aren't big enough, you need a bigger than average size to fit the ring. I found mine in my Home Depot plumbing department, the strap wrenches they had in the tool section weren't big enough.
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