Ford 5.0 fuel injection problem........ - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 06-24-2005, 12:46 AM Thread Starter
I Might Just Know What I'm Talking About
Join Date: Jan 2000
Location: Charleston, South Carolina
Posts: 1,848
Thanks: 0
Thanked 0 Times in 0 Posts
Ford 5.0 fuel injection problem........

A few years back I upgraded my 78 CJ5 to a '90 5.0 Ford engine. I physically installed the engine and the "dummy" parts of the harness. My brother stepped in and cleaned up meshing the two harnesses together. It's been awesome......up till now.

I've basically upgraded the jeep beyond my knowledge.

Now it seems like the jeep runs great 90% of the time, but after it's been running for quite some time it just doesn't have the RPMs to keep moving. Some days it's a short distance, other days I've driven it without issue.

I suspect a fuel delivery problem. But due to a weird combination of parts (explorer plenum and f150 fuel rails) I am unable to get a fuel pressure gauge on the fuel rail's nipple.

The fuel pump is relatively new. I know that doesn't mean a lot. But I put the pump into the jeep, then I've hardly driven it. Probably less than a 1000 miles in the last year and a half.

So basically there are two questions. Is there a way to diagnosis this problem without having the gauge? Or does anybody know if there are fittings that I can screw onto the fuel rail nipple (like a 90 degree elbow) that'll allow me to put a gauge on it?
IN2DEEP is offline  
Sponsored Links
post #2 of (permalink) Old 06-24-2005, 02:20 AM
jeepnut_nh's Avatar
Join Date: Mar 2002
Location: near Nashua, NH
Posts: 484
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Ford 5.0 fuel injection problem........

assuming you have the computer in the mix it giving any codes, could be a bad mass air flow or something causing mixture problems
jeepnut_nh is offline  
post #3 of (permalink) Old 06-24-2005, 11:24 AM
Join Date: Oct 2002
Posts: 173
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Ford 5.0 fuel injection problem........

There is a HUGE writeup on the 5.0 install in jeeps on the pirate 4x4 site. they have a lot of trouble shooting there also. look in the tip of the week section.
busjoe is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome