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.

Replacing fuel injectors..should I bother replacing the fuel pump module?

Thread Tools
 
Search this Thread
 
Old Apr 5, 2014 | 08:47 PM
  #1  
Pines's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2013
Posts: 55
Likes: 0
From: New Jersey
Year: 2001
Model: Cherokee
Engine: 4.0L I6
Default Replacing fuel injectors..should I bother replacing the fuel pump module?

Hi all,
I will be replacing my fuel injectors in the near future and I read somewhere (can't recall where..) that I should also replace the fuel pump module located in my gas tank. Could anyone confirm this? I haven't had any problems with it, but if it's recommended I figure I might as well.
Any tips or anything I should look out for would be appreciated.
Thanks

(2001 Jeep Cherokee Sport, 4.0L 6 cyl, etc)
Reply
Old Apr 5, 2014 | 09:47 PM
  #2  
scottmphoto's Avatar
Senior Member
 
Joined: Jan 2011
Posts: 957
Likes: 2
From: Russellville, Arkansas
Year: 1991
Model: Cherokee
Engine: 4.0 I-6
Default

I'd just get a fuel pressure test kit from the auto parts store loan-a-tool program and test your fuel pressure. If it is wirhin specifications, I'd leave it alone. "If it ain't broke, don't fix it."
Reply
Old Apr 5, 2014 | 11:30 PM
  #3  
gottarollwithit's Avatar
Member
 
Joined: Nov 2012
Posts: 107
Likes: 1
Year: 1998
Model: Cherokee
Engine: 4.0
Default

Why replace the fuel pump? Are you currently having problems with low fuel pressure?
I'm pretty sure the injector swap mod on these cars is mainly for the better spray pattern/fuel atomization of the newer style injectors. A new fuel pump will simply provide the same fuel pressure that ya currently have... albeit with a younger pump...
Reply
Old Apr 5, 2014 | 11:36 PM
  #4  
CherokeePride's Avatar
Junior Member
 
Joined: Jul 2009
Posts: 59
Likes: 0
From: Stillwater, OK
Year: 2000
Model: Cherokee
Engine: 4.0 Straight 6 HO
Default

I had multiple codes due to two bad injectors. The way the codes tripped made it very hard to tell exactly which ones where bad. I replaced all 6 injectors without replaced the fuel sending unit and it immediately fixed my problem without having to change the fuel sending unit. If you know you're changing the injectors, then change the injectors and save the money on the sending unit.
Reply
Old Apr 6, 2014 | 06:24 AM
  #5  
Fred/N0AZZ's Avatar
CF Veteran
 
Joined: Jul 2013
Posts: 7,554
Likes: 17
From: Monett, MO.
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Originally Posted by scottmphoto
I'd just get a fuel pressure test kit from the auto parts store loan-a-tool program and test your fuel pressure. If it is wirhin specifications, I'd leave it alone. "If it ain't broke, don't fix it."

Yes, Yes and Yes!
Reply
Old Apr 6, 2014 | 06:10 PM
  #6  
Pines's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2013
Posts: 55
Likes: 0
From: New Jersey
Year: 2001
Model: Cherokee
Engine: 4.0L I6
Default

Originally Posted by scottmphoto
I'd just get a fuel pressure test kit from the auto parts store loan-a-tool program and test your fuel pressure. If it is wirhin specifications, I'd leave it alone. "If it ain't broke, don't fix it."
Sounds like a good idea. And that's one hell of a motto!

Originally Posted by gottarollwithit
Why replace the fuel pump? Are you currently having problems with low fuel pressure?
I'm pretty sure the injector swap mod on these cars is mainly for the better spray pattern/fuel atomization of the newer style injectors. A new fuel pump will simply provide the same fuel pressure that ya currently have... albeit with a younger pump...
Nope - as I said I haven't had any problems with low fuel pressure or anything. I heard a rumor that you might as well replace the module when you do the injectors too..dunno where, but I won't be doing that.

Thanks everyone
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
tracyk
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
Aug 4, 2021 07:26 AM
Jose Calderon
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
17
Sep 17, 2015 08:57 PM
DanO55
MJ Comanche Tech. Stock & Modified.
2
Sep 2, 2015 08:31 PM
jghaenlein
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
8
Aug 27, 2015 07:07 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 03:22 AM.