Fuel Pump Bad? Fuel relay clicking - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-13-2013, 07:06 PM   #1
Newb
 
Join Date: May 2013
Posts: 1
Fuel Pump Bad? Fuel relay clicking

I had check engine light come on. Has been driving great before that. Immediately began to run extremely rough, couldn't accelerate, 30mph top speed. At autozone it threw 11 codes:
P0031 P0051 P0136 P0300 P0302 P0304 P0305 P0443 P0743 P1389 P1495
Related to misfire, O2 sensor, Torque converter mainly

However when examining the engine the fuel pump relay is clicking loudly, switched out with another relay, it wasn't clicking until I drove 100 yards then it was also clicking. It seemed to fix the problem for the first 30 yards.

Guys there said it would mean my fuel pump is bad. I can fix things if I know what is wrong (patience & computer tutorials), however am not really any good at diagnosing problems. Don't want to go to that much work only to find out that is not the problem.
Any thoughts or advice.

blackheart is offline   Quote Quick Reply
Old 05-14-2013, 08:08 AM   #2
Jeeper
 
Join Date: Jan 2013
Location: Appleton, WI
Posts: 537
Send a message via Yahoo to ChaddG
If in doubt when it comes to your fuel pump, put a gauge on it, if it registers between 45-54 psi, it's fine, below it's the pump, above, its the fuel regulator.
as far as the clicking..... check your spark system. make sure you don't have anything shorted in the ignition, battery wire touching the frame....
if you keep blowing the relay, something is causing it. <but what>

ChaddG is offline   Quote Quick Reply
Old 05-14-2013, 09:05 AM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,803
Images: 2
Those Autozone guys were simply being their usual clueless selves when they said a bad fuel pump would cause the relay to start clicking. That's like saying your fuel ran out because your engine stopped or the tire blew out because it ran out of air.

The fuel pump relay is controlled by the computer, not the fuel pump. The computer isn't happy with something like a sensor which is causing it to shut the fuel pump relay down when it isn't happy, & then re-enable the fuel pump relay when the problem goes away. The torque converter won't have anything to do with the misfires either.

Misfires can be caused by any number of things including a bad 02 sensor, crankshaft position sensor, bad plugs, bad ignition rail, etc.
__________________
Remember that having a different opinion doesn't also require one to be a jerk when expressing it.

When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 01:51 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC