annoying engine miss - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 08-02-2013, 12:02 PM   #1
Join Date: Apr 2013
Posts: 70
annoying engine miss

Our 99 TJ 4 cly 5 speed has a miss in it that I can't seem to pin point. It had it when we bought it so I tuned it up with new plugs, wires, cap, and rotor plus all the normal stuff and then some. Miss is still there. I have paid close attention to it and while I originally thought it was ignition related because it seemed like it was only when placed under a load now it seems to me that is more throttle position related as there is one spot that it seems to miss every time if you advance the throttle in the right way to aggravate it. So now of course I advance the throttle that way every time and the jeep misses there every time and it is driving me crazy. It usually only misses out once then runs fine as it is usually when advancing the throttle. Could the TPS have a bad spot in it that goes flat when you advance the throttle? Any thoughts would be appreciated.

Sam in IN

flynhi4u is offline   Quote Quick Reply
Old 08-02-2013, 12:44 PM   #2
Owen_TJ's Avatar
Join Date: Sep 2010
Location: Denver, CO
Posts: 4,013
Yes its possible the TPS is bad...that was going to be my guess along with the IAC

I had this for a while and then changed both sensors out when i did the 4.0 TB on mine and it hasnt happened since.
Owen_TJ is online now   Quote Quick Reply

Quick Reply

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.
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.

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 09:04 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