Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum > Diagnosing My New Jeep

Join Wrangler Forum Today

Thread: Diagnosing My New Jeep Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

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:
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:


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
04-29-2013 10:43 PM
_plaisance sometimes spark plugs causes jeeps to run like crap idk why but alot of people had that problem
04-29-2013 10:40 PM
JeepersCreep3rs I had my friends shop do it and it took them like 2-3 hrs so I'm guessing not to hard. It's a jeep the tank is right there not much to undo besides the skid plate covering the tank, but yes it's all in one unit.
04-29-2013 10:21 PM
apannone Was it tough? Everything I'm reading makes it seem like it's an "all-in-one" replacement, and dropping the tank isn't too hard.
04-29-2013 10:12 PM
JeepersCreep3rs Yes I had this same thing happen to me replaced yet fuel pump, sender unit, and filter and it was fixed.
04-29-2013 10:08 PM
Diagnosing My New Jeep

Hello everyone. I recently bought a 2003 Jeep Wrangler X, 4.0L, manual trans with 102,000 miles on it. Did a tune-up(plugs, boots, Chevron Techron fuel system treatment) immediately after buying it. Since then, the Jeep has exhibited some issues that I'm hoping to clear up:

1. Momentary hesitation in acceleration immediately after shifting into gear. Acceleration is fine thereafter.
2. Rough idle, around 600RPM. Sometimes seems as if it's going to stall out.
3. Cranks but doesn't fire on first try some mornings. Always starts up the second time.

The air filter is new and I just cleaned the throttle body, both of which did not affect the conditions listed above. There is no check engine light on. It's also worth noting that when I purchased the Jeep, the "Low Fuel" light was on and it was nearly empty. I did read a lot of other posts about some of these issues being caused by the TPS and IAC, but with all the symptoms together I'm leaning more towards the fuel pump/filter/regulator. I wanted to see if anyone else has experienced this combination of symptoms, or if the issues could be caused somewhere other than the fuel system. Also looking for advice on replacement of said fuel system parts. Thanks for the help!

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

All times are GMT -5. The time now is 12:51 PM.

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