96 grand cherokee fuel pump woes - JeepForum.com
LinkBack Thread Tools
post #1 of 9 Old 09-09-2009, 10:32 AM Thread Starter
Registered User
Join Date: Jan 2007
Location: westmoreland county PA
Posts: 28
96 grand cherokee fuel pump woes

hows it goin guys? my dad is having a problem with his jeep. he parked it at work and it was running fine but when he went to leave it just cranked and cranked. i went to check it out today and i couldn't hear the fuel pump and i noticed the gauges weren't cycling when i turned the key on. i think its the fuel pump but was wondering if the gauges not cycling pointed to something different like a bad ground or ecu or something? what do you guys think?

turbojeep88 is offline  
Sponsored Links
post #2 of 9 Old 09-09-2009, 10:46 AM
Registered User
2007 JK Wrangler 
Join Date: Apr 2004
Location: Pittsburgh
Posts: 1,170
That's hard to say man. Start checking the basics, fuel, spark compression.

If you have fuel and spark, do a compression test, my guess is that you'll find a problem with one of the first two.

07 JKU - 6spd - LSD rear
cj7guy is offline  
post #3 of 9 Old 09-09-2009, 11:29 AM
Registered User
1995 ZJ 
Join Date: Feb 2009
Location: Sonoita
Posts: 2,093
If you have fuel and spark, check ths CPS. Does the tac move when you crank the engine ?

95' Jeep Grand Cherokee Laredo, 148k, 5.2, NP242, 46RH, 4" RC lift, all new adjustable ca's(2 IRO front uppers and the rest RC adjustables), nitro shocks, JKS TB's, Jet Chip, Dynamax cat back, Magnaflow cat, GTP hood vents. 31" Pro Comps with Rock Krawler "D"s. Westin brush/grill guard with Hella 500s, 411's, Solid diff covers, detroit locker rear, power lock in front, SYE and Tom Wood's front/rear shafts, RE discos, BPE's, d-rings front and back, factory tc and rad skid, hitch, Sliders next.
03' Jeep Grand Cherokee Laredo, (wifes Jeep) 99k, 4.7 5 speed auto, K&N, KYB shocks, drilled-slotted rotors, All the toys.
2000' Ford Superduty, F250, 7.3, 198K, 37's, too much to list.

Built Not Bought #257

Parts for sale d30 and d35 parts
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
rugermack is offline  
post #4 of 9 Old 09-11-2009, 06:42 PM Thread Starter
Registered User
Join Date: Jan 2007
Location: westmoreland county PA
Posts: 28
update: it has neither fuel nor spark and the guages wont cycle when switched to on. cranks over fine and all other things electrical seem to work. ran just fine the other day. any suggestions?
turbojeep88 is offline  
post #5 of 9 Old 09-12-2009, 02:13 PM
Registered User
1977 CJ5 
Join Date: Jul 2006
Location: Williams Bay
Posts: 167
Have you checked the fuses in the Power Distribution Center?(the black rectangular box next to the battery)

A few years ago, my '96 Zj had the same problem you describe. I found one of the fuses blown. It was the fuse for the ASD (automatic shutdown relay) I replaced the fuse and it started right up. Then, when I put it in gear,it blew the same fuse again. On mine the wiring harness for the rear oxygen sensor had sagged down and was rubbing on the driveshaft. The wires were worn through creating a short.
242forme is offline  
post #6 of 9 Old 09-15-2009, 10:58 PM Thread Starter
Registered User
Join Date: Jan 2007
Location: westmoreland county PA
Posts: 28
yea that was the first thing i checked, i didnt notice any blown ones. im goin back to look at it tomorrow hopefully i can figure it out. i googled the problem and found it might be the ecu or the factory alarm system so i guess i'll check that stuff out.
turbojeep88 is offline  
post #7 of 9 Old 09-16-2009, 08:42 AM
Registered User
1999 WJ 
Join Date: Sep 2005
Location: Sudbury, ON.
Posts: 688
Originally Posted by turbojeep88 View Post
...factory alarm system...

The factory alarm does disable the fuel pump but that wouldn't explain no spark.


So I installed the flux capacitor but the Jeep just won't do 88 mph.

-'99 WJ Limited, 4.7, Patriot Blue, 2" BB, 31" Mall-Terrains, Pavement Princess
-'97 TJ, Stone White, 4" Superlift, 33" SSRs, lunchboxed rear, 12K Titan winch, and 2.5 litres of exhillirating performance.
CanadianZed-J is offline  
post #8 of 9 Old 09-16-2009, 09:03 AM
Registered User
2001 XJ Cherokee 
Join Date: May 2008
Location: Tatamagouche
Posts: 370
Did you check for codes?

If a CPS fails, it'll let the engine continue running, but won't restart after you shut it down. Just another thing to check. Mine did the same thing as what you're describing and it was bad wires to the CPS.

93 Grand Wagoneer
5.5" Hybrid Lift/BDS CA's
231/skids/33" KM2's
Homegrown Bumper
Coletrickle is offline  
post #9 of 9 Old 09-16-2009, 09:44 AM Thread Starter
Registered User
Join Date: Jan 2007
Location: westmoreland county PA
Posts: 28
i think i figured it out. i unplugged the wire to the cps and the gauges worked again. plugged it back in and no gauges. looks like im replacing the cps tomorrow
turbojeep88 is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
01 Grand Cherokee fuel pump replacement rkreger2 WJ Grand Cherokee Forum 18 03-16-2016 11:35 AM
5.9L Grand Cherokee Fuel Pump Issue bandanaboyz ZJ Grand Cherokee Forum 7 10-10-2009 03:54 PM
93 Grand cherokee fuel pump toms93grand ZJ Grand Cherokee Forum 7 12-30-2007 05:49 PM
06 Grand Cherokee fuel pump problems?? Busther WK Grand Cherokee & XK Commander Forum 0 12-13-2006 09:39 AM
96 Grand Cherokee fuel pump change carrolles ZJ Grand Cherokee Forum 4 12-14-2002 11:40 PM

Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are On
Refbacks are On

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