Starting Problem when Engine HOT -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > Starting Problem when Engine HOT

Awesome Open box items at OPENBOXOFFROAD.COMIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed LineJeep parts, deals and more at

Unread 03-05-2013, 06:55 PM   #1
Registered User
1998 TJ Wrangler 
Join Date: Jun 2012
Location: Pasadena, CA
Posts: 196
Starting Problem when Engine HOT

Been on a constant search to find the problem. I'm 99% sure its one of the sensors, gone bad.

The jeep starts up fine when the engine is cold, but when it's at normal operating temp, it wants to sputter and die, unless I give it some gas for about 5 seconds. Then it idles normally, (which is slightly rough for my jeep.)

Again, IT ONLY DOES IT WHEN THE ENGINE IS HOT. It must be a bad sensor that measures temperature, or else it would always do it, right? Any ideas?

aldersonfilm is offline   Reply With Quote Quick reply to this message
Unread 03-05-2013, 07:09 PM   #2
Not Banned
Motorcharge's Avatar
1991 MJ Comanche 
Join Date: Oct 2008
Location: , Virginia
Posts: 12,526
CPS probably.

  1. Near the rear of intake manifold, disconnect (CPS) pigtail harness connector from main wiring harness.
  2. Place an ohmmeter across terminals A and B. The meter reading should be open (no resistance). Replace sensor if any resistance is indicated.
For the terminals, the flat side of where they're at is the bottom. Top terminal is A, left bottom one is B.

You can also take a can of canned air and turn it upside and blow it across the terminals to cool it down (be careful not to spray your hands). Plug it back in after and if it starts up you need to replace the sensor.

Originally Posted by Ron Swanson
There is no such thing as bad weather. Only inadequate clothing and transportation.
Motorcharge is offline   Reply With Quote Quick reply to this message

cranking , hot engine , sensor , start problems , starting problems

Quick Reply

Register Now

In order to be able to post messages on the 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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.