Squatting Pigeon

I've searched myself cross-eyed on forum after forum looking for some kind of answer on this...

I have the notorious late production '96 cherokee with the fuel pressure regulator in the tank atop the fuel pump. And it has gone bad, yes I know it's bad, I'm not here for a diagnosis. I simply want to know if I can just bypass it and maybe put an manual inline FPR somewhere in the engine bay.

Would doing that have any negative consequences? and is it even possible in this scenario?
I am still limping the truck around (it's my DD) and cant drop the tank at the moment to poke around, I want to get a game plan together before I get to taking it apart since I cant have it apart long...

sorry for the lengthy post, any help is appreciated.

crabmushrooms5

I almost posted a thread like this earlier. My pressure is at 60+-2 instead of 49+-5 if I remember correctly. Fuel filter is good. I asked about this in the ask a question thread but got no response.

I was thinking about maybe swapping the pump for another year model fuel system setup.

I would like to know if your idea will work also.

crabmushrooms5

https://www.cherokeeforum.com/showthread.php?t=145203&styleid=16

All links dead

Chrysler part number 479894

96 uses a returnless not sure about other years.

crabmushrooms5

https://www.cherokeeforum.com/showthread.php?t=180438&styleid=16

Same idea, more info, no update

crabmushrooms5

I was also thinking maybe we could just clean the fuel pressure regulator out? Could just be gummed up?

djgrayxj

Note from DJ
1996 XJ fuel pump and pressure regulator repair details
http://www.naxja.org/forum/showthrea...ight=1996+fuel

crabmushrooms5

Squatting Pigeon

could it really be that easy?
the whole vacuum port not connected thing bothers me...

crabmushrooms5

Probably a phenomenon fix. we will have to find specs on the pump and regulator to try to build a custom setup without replacing the whole fuel system or getting unreasonably expensive.

Evhfan2000

Is this just a 96 issue? My 98 fuel pump leaks down and takes a long time to crank and start up after its been sitting overnight. I'd like a solution that doesn't require dropping the tank and replacing the whole fuel pump.

Dean

crabmushrooms5

As far as I know this is just a 96 issue with the fuel pressure regulator (fpr). I think you might want to google "cherokee fuel check valve forum"

djgrayxj

Note from DJ
Hear is another post regarding ’96 XJ fuel pressure regulator replacement.

Switching fuel pressure regulator from tank to rail?
http://www.naxja.org/forum/showthread.php?t=1112117
OP by redxj94 on 05-09-2014

djgrayxj

Note from DJ to Dean
Turn your ignition switch to the ON position and STOP. Listen for the fuel pump go through its priming cycle (Radio OFF volume on low) then turn the ignition switch back to OFF, wait about 3 to 5 seconds then repeat the previous cycle ON wait then OFF. Now on the third cycle try ON wait for prime to stop then proceeded on to the start position.

The time factor and the number of cycles you will need to develop to fit your Jeeps needs.

Your anti drain back valve is built into the fuel pump and to the best of my knowledge the only fix is replace the fuel pump. But by allowing the fuel pump to repeat the priming cycle is a very cheap and easy solution over replacing the fuel pump.

Squatting Pigeon

so there are two distinct options in that thread, the crown FPR part no: 53030001 and the NAPA one part no:CRB 219618. Both of which, posters seem to have decent luck with....

Then there's the guy at the end that said he popped in one of the rockauto FPRs and it worked.

I wonder which of the 3 is the most intelligent choice, as I see no hard facts tied to any one of them.

Will any one of these FPRs deliver the correct fuel pressure?

djgrayxj

Note from DJ to Squatting Pigeon
I haven’t looked up any information on any of the regulators except the NAPA 219618.

Their information states that it will deliver Quote “Fuel Pressure Regulator Pressure Rating: 49 psi” which is what you want.

If it was me I would go to the nearest NAPA store and ask to see that part number item. Open the box and have a look see at what you’re buying before you pay for something that the photo looks good but when it arrives it is not what you wanted.

Here is a link to the item in in question at NAPA, check it out and you decide.
http://www.napaonline.com/Catalog/Re...Dp%3d3%26N%3d0

Please keep us poster as to what you decide, or if you need more information. And let us know what the final outcome is.