Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Fuel pump out again. I'm losing it.

Thread Tools
 
Search this Thread
 
Old 07-02-2016, 01:16 PM
  #46  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Way far from me.
Old 07-02-2016, 01:17 PM
  #47  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by DFlintstone
Maybe we are on to something here. I'm not sure a new assembly comes with the filter screen. (which is easy to knock off while removing the pump).

Has there been a filter screen on the pumps you have been installing? (you may find some number of them in the tank)
Here is exactly what I've been getting. Is that white strainer what your talking about? It comes with that.

https://www.napaonline.com/napa/en/p...91S_0192569201

Edit: also I just checked the ohms of the ground at it was perfect. I'll still make it extra shiny though.

Last edited by Chick-N-Picker; 07-02-2016 at 01:20 PM.
Old 07-02-2016, 01:19 PM
  #48  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Yes. Check the ground wire on that unit.
Old 07-02-2016, 01:21 PM
  #49  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Yes. Check the ground wire on that unit.
Just did it. Edited results to last post.
Old 07-02-2016, 01:37 PM
  #50  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Also check that internal wire for continuity Mr Electrical!!
Old 07-02-2016, 02:17 PM
  #51  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Also check that internal wire for continuity Mr Electrical!!
Okay. I do have a continuity tester. Which wire should I touch it to.

I'm beginning to think there is no solution and I'm doomed.
Old 07-02-2016, 02:57 PM
  #52  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

The wire between the fuel pump and the flange. One probe at each end.
Old 07-02-2016, 03:45 PM
  #53  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
The wire between the fuel pump and the flange. One probe at each end.
I don't know if my tester is broke but I'm not getting it to light up on anything. Even in my house. Maybe I'm doing it wrong although I've used it many times. I wonder what the odds are that it is the continuity.

The pump must be out to test this correct? Mines out but still plugged up. I will be checking for trash soon. I need to jack the back up first.

Last edited by Chick-N-Picker; 04-16-2024 at 06:03 PM.
Old 07-02-2016, 04:17 PM
  #54  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 18 Likes on 18 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

Originally Posted by Chick-N-Picker
Is that white strainer what your talking about? It comes with that.
Yea, darn. I'd hoped that maybe your problem was running without one.

Originally Posted by Chick-N-Picker
I don't know if my tester is broke
No, No, Continuity testing IS Ohms testing, like you were already doing. Continuity means it's connected, juice can go through it. Zero ohms is perfect continuity.

I think he's wanting you to check from the terminals on the pump, from there to where they meet the "harness" wires.
Old 07-02-2016, 04:22 PM
  #55  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by DFlintstone
Yea, darn. I'd hoped that maybe your problem was running without one.



No, No, Continuity testing IS Ohms testing, like you were already doing. Continuity means it's connected, juice can go through it. Zero ohms is perfect continuity.

I think he's wanting you to check from the terminals on the pump, from there to where they meet the "harness" wires.
No. From the pump to the flange is a ground wire with a female spade terminal on each end. Measure from one end to the other with the key off.
Old 07-02-2016, 04:23 PM
  #56  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 18 Likes on 18 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

Originally Posted by Chick-N-Picker
My family is telling me I can't fix it and I'll need to take it to a shop.
Maybe tell them that Cruiser was service manager at a Jeep dealership for 12 years, and that Flintsrone thinks a shop will serew you.
Old 07-02-2016, 06:10 PM
  #57  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
No. From the pump to the flange is a ground wire with a female spade terminal on each end. Measure from one end to the other with the key off.
I thought that was the wire you meant just wrong idea.

Anyway just checked it with key off and it had .01 ohms which is good.
Old 07-02-2016, 06:13 PM
  #58  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by DFlintstone
Maybe tell them that Cruiser was service manager at a Jeep dealership for 12 years, and that Flintsrone thinks a shop will serew you.
Don't worry my man I told them that and said if he can't help me then ain't no random shop going to.
I also told them that a shop wouldn't probably find anything but tell me it just needed another fuel pump assembly then in 3 weeks I'd be right back where I was and out of big money. That is if I had the big money too spend haha.
Old 07-02-2016, 06:28 PM
  #59  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes on 1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Chick-N-Picker
I thought that was the wire you meant just wrong idea.

Anyway just checked it with key off and it had .01 ohms which is good.
Connectors good and tight?
Old 07-02-2016, 07:21 PM
  #60  
Senior Member
Thread Starter
 
Chick-N-Picker's Avatar
 
Join Date: Jul 2015
Posts: 694
Received 50 Likes on 38 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Connectors good and tight?
Yes. They are good and tight and have no corrosion that I can see.

I will be checking in the tank for trash tomorrow when I get the back a little higher. After that I will have done everything that has been suggested.

Also I thought about what the previous owner told it did to him. He said he drove it and it started going out then he took it home.
He would crank it up and move around his drive way and it would die. He'd park back in shed. Then it got to the point it wouldn't start at all.

This is what it's basically doing to me except I never make it to the point that it won't start because I keep changing the pump. But it's definitely cutting off on me in on the roas after it starts humming and going out. Almost got me killed in early June.

I said all that to say that whatever is burning up the airtex pumps is the same thing that burned up the stock pump. So it's probably not going to do me any good to burn up a Bosch.

It has to be something simple because the jeep runs too good for 2-4 weeks. Then it hums for a week. Then it hums and starts cutting off.


Quick Reply: Fuel pump out again. I'm losing it.



All times are GMT -5. The time now is 02:22 AM.