MJ Comanche Tech. Stock & Modified. MJ (86-92)
All discussion regarding the Jeep Comanche, the pickup truck related to the Cherokee platform.

'89 w/FI Gas 4.0 Lt. Comanche - Fuel Pump/Filter Change

Old 09-23-2014, 05:53 PM
  #1  
Newbie
Thread Starter
 
89ComancheOwner's Avatar
 
Join Date: Sep 2014
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default '89 w/FI Gas 4.0 Lt. Comanche - Fuel Pump/Filter Change

Is this a difficult operation? Does it take any special tools/equipment (I ask because it is a pressurized fuel injected system). And do you have any experience with Precise Auto Parts?

Thanks!
Old 09-23-2014, 10:25 PM
  #2  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,863
Received 1,524 Likes on 1,236 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Pressure is relieved by removing the fuel pump relay with the engine running.
Attached Thumbnails '89 w/FI Gas 4.0 Lt. Comanche - Fuel Pump/Filter Change-renix-relay-center.jpg  
Old 09-24-2014, 07:59 AM
  #3  
Newbie
Thread Starter
 
89ComancheOwner's Avatar
 
Join Date: Sep 2014
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

What about after the install? Does the system need to be re-pressurized and is there any special tools/equipment needed for this?
Thanks!
Old 09-24-2014, 08:11 AM
  #4  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,863
Received 1,524 Likes on 1,236 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by 89ComancheOwner
What about after the install? Does the system need to be re-pressurized and is there any special tools/equipment needed for this?
Thanks!
Turn the key to On for about 5 seconds. Turn it Off , and then on again and then Start er up.
Old 09-24-2014, 10:10 AM
  #5  
Newbie
Thread Starter
 
89ComancheOwner's Avatar
 
Join Date: Sep 2014
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

Thanks very much... Looks like I know what I'm doing next weekend!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rdr8887
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
33
08-08-2017 07:28 AM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
15
09-05-2015 04:36 PM
DanO55
MJ Comanche Tech. Stock & Modified.
2
09-02-2015 08:31 PM
DanO55
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
08-28-2015 07:16 PM
Zerocyde
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
08-24-2015 10:56 AM

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

Thread Tools
Search this Thread
Quick Reply: '89 w/FI Gas 4.0 Lt. Comanche - Fuel Pump/Filter Change



All times are GMT -5. The time now is 11:48 AM.