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'96 XJ 4.0 Inline fuel pump

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Old 12-09-2017, 05:17 AM
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Year: 1996 XJ
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Default '96 XJ 4.0 Inline fuel pump

Hi my fuel pump went out and I'm wondering if I can get by with an inline pump?
I've read a few posts some where that said they have, of course I can't find them now.
The regulator is on or by the fuel rail so if it has the right psi to it why won't it work or will it? Temporary at least..I really need to get it going

I'm in bad health an not able to do much. My mechanic's wife is terminal an
taken a turn for the worst so he's taking care of her 24/7.

I had trouble posting this I hope it's OK, if not please let me know
I'd appreciate any an all help with this.
Thanks, Bill
Old 12-09-2017, 07:28 AM
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Not sure I understand which fuel pump system you have. The 1996 model had different fuel pump systems because it was a transition year from old design to new design. So we first have to figure out which on you have.

Is your fuel pressure regulator on the fuel rail or not?

Either way, it will be easier, cheaper and safer to replace with the correct part.

Hope you get better soon, Bill.

Good luck.
Old 12-09-2017, 01:00 PM
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it's a 1996 the fuel regulator is part of the fuel pump and it is located in the tank
Old 12-09-2017, 01:19 PM
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Well I was wrong.
The fuel pressure regulator is not on the fuel rail
I remember now it was built late in '96

And I've already bought the inline pump according to the VIN an everyone I asked said it was the right one.
I guess I asked the wrong ones!

I wanted to get the whole assembly but couldn't find one with in reason. I did see plenty for '97 an up.

Looks like I'll have to drop the tank just to find out what I have.

Thank you, an thanks for your help.

Last edited by Thawolff; 12-09-2017 at 01:55 PM.
Old 12-09-2017, 01:33 PM
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"it's a 1996 the fuel regulator is part of the fuel pump and it is located in the tank"

That's what I was afraid of, I'm not sure I like that setup either

Thanks Peligro
Old 12-10-2017, 12:11 AM
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Here's some light reading for you.

http://www.naxja.org/forum/showthread.php?t=1107991
Old 12-10-2017, 01:08 AM
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Wow that's right on point !!
It might take me a while but I feel like I can handle it now.
I owe you one man!

Thanks again Peligro113

Last edited by Thawolff; 12-10-2017 at 02:14 AM.
Old 12-29-2017, 08:14 PM
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Default '96 XJ fuel pump assembly

I finally found the whole fuel pump assembly but it has what looks a vacuum port on top of the regulator.
I still haven't been under it so I don't know if my '96 has a vent line or not.

Can somebody tell me what to do if mine doesn't have a vacuum line?
Or if I've got the wrong assembly

I first bought a Carter pump because I could find the whole module.
I wonder if I should install the Carter pump in place of the one that came with module because it's a no name?

I wish I'd spent $80 more an gotten the better one

Any help or opinions would be much appreciated.

Thank you all for your help I really appreciate

Last edited by Thawolff; 12-30-2017 at 06:57 AM.
Old 12-29-2017, 09:33 PM
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On the 96 and older you don't have to drop the tank to change the fuel pump. It pulls out on the front of the tank.
Old 12-30-2017, 07:07 AM
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Originally Posted by Thawolff
I finally found the whole fuel pump assembly but it has what looks a vacuum port on top of the regulator.
I still haven't been under it so I don't know if my '96 has a vent line or not.

Can somebody tell me what to do if mine doesn't have a vent line?
Or if I've got the wrong assembly

I first bought a Carter pump because I could find the whole module.
I wonder if I should install the Carter pump in place of the one that came with module because it's a no name?

I wish I'd spent $80 more an gotten the better one

Any help or opinions would be much appreciated.

Thank you all for your help I really appreciate
Do you have a picture of what you bought?
Old 12-30-2017, 07:21 AM
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My 96 has 2 vent lines on top of the fuel tank and they get tied together and then run that line back to the intake manifold so that fuel vent gas can be burnt up by the engine.

Here are some pictures I took when I dropped my tank and changed the fuel pump. You do not need to drop the tank to take out the fuel pump - you should be able to do it by looking up at the front of the tank.

'96 XJ 4.0 Inline fuel pump-eight.jpg

'96 XJ 4.0 Inline fuel pump-seven.jpg

'96 XJ 4.0 Inline fuel pump-six.jpg

'96 XJ 4.0 Inline fuel pump-five.jpg

Here are a couple of pics of what my sending unit looked like

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Old 12-30-2017, 08:26 AM
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Yes thanks
I'm concerned about the vacuum port on the new assembly.
Does the '96 have a vacuum port coming off the pump assembly?
I haven't learned to upload pics yet..so
Here's a link with a pic of regulator with a vacuum port like my new one..have to scroll down a bit.

http://www.naxja.org/forum/showthrea...1107991&page=3

Thanks again for your help
Old 12-30-2017, 08:48 AM
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No but a link to one but it's just like the one OldTires just posted
I meant vacuum port on the regulator but I didn't know it has two vent lines either.
I really wanted to drop the tank an replace all lines etc but the temp is going down very cold for a week. So I'm gonna try to get it in before this cold front comes hits.

Thanks again y'all I really appreciate it.
Hope you all have a Happy New year!!
Old 12-30-2017, 07:45 PM
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Default Installed the new fuel assembly today

Well had a guy install the new pump module today and it still didn't start.
I've been having to prime it 2 or 3 times for months an it has been getting louder. So just knew it was the pump...well thought it was.
It was running fine the last time I got home an turned it off but hasn't started since.

He checked the fuses an relays they seemed OK an I think tried to by pass the relay but still no fuel.
Where should I go from here ?
I do have 15 gallons of gas but no collision insurance...
Thanks again for all your help.
Old 12-31-2017, 03:56 AM
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The regulator on the fuel pump of 1996 XJ does have a vacuum port on it but the port does not connect to anything so that it can produce the 49 psi of fuel pressure required. If you plugged or capped the regulator it will produce less fuel pressure than required.

It is supposed to look like this when you are done.




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