RPM Drop at 60-70 mph, Sporadic stalling, tough restart - JeepForum.com
 
LinkBack Thread Tools
post #1 of 2 Old 04-17-2013, 07:05 PM Thread Starter
ZJNikki711
Registered User
1998 ZJ 
 
Join Date: Apr 2013
Location: San Diego
Posts: 1
RPM Drop at 60-70 mph, Sporadic stalling, tough restart

98 ZJ 4.0L engine. All stock, 186000. My Jeep will drop all RPMs while driving on the highway and most of the time will recover in 5-10 seconds. When it doesn't recover the vehicle stalls. At low speeds during city driving it will stall and take 10 min and several tries to restart. I have been through the stall forum on here and replaced distributor cap, battery, fuel pump. It isn't throwing any CEL codes and there are none stored. I did all the cleaning and connecter checking as well. I am at a loss and my favorite mechanic (dad) lives 2000 mi away now. I'm a 25 yr old woman so you can figure out what kind of help I get from most SoCal mechanics. Please help!!! I love my beast too much to give up on her..... Plus I can't afford a new one.

ZJNikki711 is offline  
Sponsored Links
Advertisement
 
post #2 of 2 Old 04-17-2013, 08:07 PM
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Posts: 8,585
Sounds like the PCM is shutting off.

Most common causes are internal PCM failure, failure of connectors at the PCM, Crank sensor.

When it stalls, what do the fuel and battery gauges do? Tach and speedo?

Do you see the CEL flash when it recovers from a rolling stall?

How are you reading the codes, with a reader or key trick?
ZeeJay1997 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