I have a 2002 Wrangler. Fuel pump is bad and bought a replacement and the body of the new pump is longer than the old one. Because of that, the pump bottoms out before the flange stops on the tank. I am thinking the tank is a 15 gallon and not a 19 gallon. The part number on the tank is P52100277AG. I can’t find any information on that part number. Is it possible that my jeep has the smaller tank? Any help is appreciated. If it is the smaller tank, anyone have a part number?
Fuel Tank
- Thread starter Tojemo
- Start date
I am almost certain all tjs used the 20 gallon plastic gas tank. Isnt the fuel pump spring loaded?
Some early TJ's used the 15 gallon, and I believe it continued a little longer on 4-cylinder models. But by 2002 I thought they had gone to all 19 gallon tanks.
I thought they were all 19 but the early ones had a longer tube that made it 15? I think you can trim it down
Last edited:
There are specific part numbers for 15 and 19 gallon tank fuel pumps.
A 15 will work in a 19 gallon tank with obvious consequences.
If you were in a complete pinch you could disassemble parts from a 19 and install them into a 15 assembly and make something work.
Would also be useful to see a picture of your original pump and the new one.
-Mac
A 15 will work in a 19 gallon tank with obvious consequences.
If you were in a complete pinch you could disassemble parts from a 19 and install them into a 15 assembly and make something work.
Would also be useful to see a picture of your original pump and the new one.
-Mac
To expand on what was previously mentioned just in case: The pump assembly has springs so you actually have to force it down a bit and it compresses to install properly. When not compressed it seems too tall. Could that be the issue?
The problem is folks set the tank on the sump and even when the springs are compressed, the pump is too tall to let the lock ring engage the threads. They need to put a couple of inches of spacer under the two ends of the tank and let the sump sag to increase the height between the sump and the lock ring threads. The other issue that will make it difficult is if the new tank has been sitting without a pump in it. The top of the tank will sag a bit and make it worse.
To clarify further, all TJ fuel tanks are roughly the same physical dimensions whether they are 15 or 19 gallon capacities.
Tanks were all 19 gallons but the ones in the se had a tube inside that kept it being filled more than 15 gallons,
( weight management for the 4 cyl)… You can cut the tube out and turn a 15 to 19gal tank… There were 2 different fuel pumps though, 15gal and 19gal, you could use the 19gal pump in a unmodified 15gal tank and it will work, just not show full, and you can use a 15gal pump in a 19gal tank and it will not show empty… fuel level was set by the float on the pump…
( weight management for the 4 cyl)… You can cut the tube out and turn a 15 to 19gal tank… There were 2 different fuel pumps though, 15gal and 19gal, you could use the 19gal pump in a unmodified 15gal tank and it will work, just not show full, and you can use a 15gal pump in a 19gal tank and it will not show empty… fuel level was set by the float on the pump…
Last edited:
Seems to be a problem, maybe has the wrong one for a TJ 02, X (6 cyl) ??
Last edited:
I have fought that on a yj 20 gallon tank but I don't recall fighting it on a tj tank. It does make sense though because every tj tank I have seen is bowed down in the middle.
It doesn't help that the gasket is a very tight fit and pushes the top of the tank down at the same time you're trying to compress the pump springs.
Similar threads
