Fuel pump issues, no power to pump? - JeepForum.com
Reply
 
LinkBack Thread Tools
post #1 of 71 Old 05-24-2013, 02:56 PM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
Fuel pump issues, no power to pump?

Sorry I'm not searching around for this problem, I'm on my cell phone on the middle of no where with no Internet so this is my only way takes forever to load pages, anyway about a month of go my fuel pump went out I guess, my car wouldn't start no more said I was on empty with a full tank of gas, well I went out n bought all new hoses tanks straps fuel pump, everything. I finally get everything together n I go to start it n it says its empty on e not starting n I put 3 gallons in it. I checked all my fuses, connections everything is fine. I literally have no clue what could be the problem, I really need some help. My jeep is a 97 jeep grand cheroke 4.0 I6 thank you.

Yttrium is offline  
Sponsored Links
Advertisement
 
post #2 of 71 Old 05-24-2013, 03:04 PM
Afdude88
Registered User
1998 ZJ 
 
Join Date: Jan 2012
Location: Denver
Posts: 567
Check the fuel pump relay and the asd relay. Switch em with the ac relay to test. Considering how your gauge aint working i would look at the connector at the pump. Look for recessed pins on both ends. I had the latter issue once....pita

1993 Grand Cherokee Limited 4.0L AW-4

1998 Grand Cherokee: 4.0L I6, 42RE, np249 (ugh), stock (ugh)
Afdude88 is online now  
post #3 of 71 Old 05-24-2013, 04:31 PM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
Well i tired all that, still nothing thank you man for your time. Just wish I knew what exactly what is wrong.
Yttrium is offline  
post #4 of 71 Old 05-24-2013, 04:54 PM
chetzar
Member
1994 ZJ 
 
Join Date: Sep 2007
Location: Bloomington
Posts: 159
I recently went through this ordeal with my dads Dodge Ram, it turned out to be a bad ground cable, you could try jumping the fuel pump with a battery to see if it kicks on.
chetzar is offline  
post #5 of 71 Old 05-25-2013, 11:43 AM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
Alright thanks bud, like the ground cables that are off the battery grounded everywhere under the hood? How would I jump the fuel pump with a battery?
Yttrium is offline  
post #6 of 71 Old 05-25-2013, 02:59 PM
eagsc7
Registered User
1994 ZJ 
 
Join Date: Apr 2013
Location: Sweetwater Cyt
Posts: 433
Have you tried beating the fuel tank? Also, when you drop the tank to replace the pump, It may not even be the pump... It could be a rodent chewed wire. I've had this happen with 2 jeeps, and even a friends van. Some rodents REALLY like the taste of whatever the factory uses to seal and protect some connections.
eagsc7 is offline  
post #7 of 71 Old 05-25-2013, 03:18 PM
ZJNewbi3
Registered User
1995 ZJ 
 
Join Date: Mar 2013
Location: Milwaukee
Posts: 785
I second re-checking the connector and jumping the pump. I replaced my fuel pump myself to fix a no-start problem and it wasn't even bad check for voltage at the pump connector too. (use a multimeter across the connector on the JEEP END) if no voltage it probably isnt the pump!
ZJNewbi3 is offline  
post #8 of 71 Old 05-28-2013, 12:23 PM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
Well alright, I'll try to do what I can. Thank you for the info on it all, most likely it's the wire idk how I'm gonna replace that or anything. Don't really have money to spend on mechanic, so ill post on here in a few days n see how far I get. Thank you everyone.
Yttrium is offline  
post #9 of 71 Old 05-28-2013, 05:12 PM
eagsc7
Registered User
1994 ZJ 
 
Join Date: Apr 2013
Location: Sweetwater Cyt
Posts: 433
Maybe try and just run a set of new wires to get it running. From the Junction box fuse 12(10a), run the wire to corospond with the Orange/Dark Blue wire to the fuel pump. If you have a LONG continuity tester, you can check the wire itself to see if the wire has gone bad. If it's good, then Check the connections(Should be 3) between the Junction Box and Fuel Pump. I'm looking at page 12-43 in the Haynes Repair Manual (50025).
eagsc7 is offline  
post #10 of 71 Old 05-29-2013, 01:13 AM
Oldfrog
Registered User
2007 WK 
 
Join Date: Feb 2008
Location: Louisiana/Texas
Posts: 5,091
Quote:
Originally Posted by Yttrium View Post
Sorry I'm not searching around for this problem, I'm on my cell phone on the middle of no where with no Internet so this is my only way takes forever to load pages, anyway about a month of go my fuel pump went out I guess, my car wouldn't start no more said I was on empty with a full tank of gas, well I went out n bought all new hoses tanks straps fuel pump, everything. I finally get everything together n I go to start it n it says its empty on e not starting n I put 3 gallons in it. I checked all my fuses, connections everything is fine. I literally have no clue what could be the problem, I really need some help. My jeep is a 97 jeep grand cheroke 4.0 I6 thank you.
So you pulled the tank and installed a new pump inside it recently? Is there a possibility that something in the
tank or the connector outside the tank came loose?

As for the gauge, I know there was a recall on the fuel gauge sending units on the 97 model. ( which is the year I own, too) Did you have the dealership replace it?

How about an alarm system? Do you have one?

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
Oldfrog is offline  
post #11 of 71 Old 05-29-2013, 05:51 PM
AaronButler
Registered User
1996 ZJ 
 
Join Date: Sep 2012
Location: Phoenix
Posts: 151
amongst trying the aforementioned ideas, check your fuel filter. Although I dont think it would be clogged that bad to where it wouldnt start, its worth a shot. They are pretty inexpensive, and if you dont remember when the last time it was changed.. its probably a good idea to do it now

1996 ZJ 4.0 Laredo... you know, the one with the ripped leather seats
AaronButler is offline  
post #12 of 71 Old 05-29-2013, 08:35 PM
KoreaZJ
Registered User
1994 ZJ 
 
Join Date: Aug 2011
Location: GANGNAM STYLE
Posts: 2,666
See diagram below...
  1. Remove Fuel Pump Relay
  2. Test relay socket Pin#16, should have +12v always. If no voltage, check PDC Fuse#16 (20amp)
  3. Test relay socket Pin#18, should have +12v with Key ON. If no voltage, check PDC Fuse#18 (15amp)
If above tests are good, briefly short relay socket Pin#16 to Pin#17... fuel pump should run. (even with Key OFF)
If not, perhaps bad pump, wiring, or connections.



Fuel gauge level sensor is a variable resistor. PCM supplies both PWR/GND.
KoreaZJ is offline  
post #13 of 71 Old 05-30-2013, 11:39 AM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
Yes I install the pump a few weeks ago, I've check the volts n everything, for the relay fuse box, there's power but somewhere past it the wires are shot. I checked the plug by the fuel pump the female one n there's not even power coming from there, or the wires behind it. So somewhere, the wires have gone bad I guess, I'm about fed up with it. Today I almost to a sledge hammer to the jeep. I even hooked a wire up to the relay n ran it to the new pump n still no power. I'm about to take it to a shop because I'm completely lost with everything. Thnk you everyone for your help I wish this was something easy.
Yttrium is offline  
post #14 of 71 Old 05-30-2013, 09:00 PM
ZJNewbi3
Registered User
1995 ZJ 
 
Join Date: Mar 2013
Location: Milwaukee
Posts: 785
Make sure you check all grounds and look by exhaust components for melted wires and check the whole engine bay for any damaged wires! I was in the same spot you were a few months ago just be patient!

Just trying to keep her goin'!!
ZJNewbi3 is offline  
post #15 of 71 Old 05-30-2013, 09:41 PM Thread Starter
Yttrium
Registered User
1997 ZJ 
 
Join Date: Mar 2013
Location: Boyne City
Posts: 46
I know I'm trying to be, just so stressful. I ended up kicking my door forward n bending it because I was so angry earlier haha anyway what was your problem zjnewbie?
Yttrium is offline  
Reply

Quick Reply
Message:
Options

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

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









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



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