check engine light, tied to 4WD use? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ 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 08-05-2008, 04:16 PM   #1
Newb
 
Join Date: Aug 2008
Location: phoenix
Posts: 6
check engine light, tied to 4WD use?

Greetings eveyone, I'd appreciate advice on the following:
Most times after I engage/disengage from 4WD the 'Check Engine' light comes on and the car hesitates, mis-fires (as if the timing were off or the gas were dirty). By accident I found that turning off the engine and re-starting it most time solves the problem -as the engine seems to go back to normal and the pesky light goes off.
How do I solve the above for good?

Thanks,

Frank Fletez
4-cyl 1993 YJ, 132K

frankfletez is offline   Quote Quick Reply
Old 08-07-2008, 07:00 PM   #2
Jeeper
 
Join Date: Oct 2005
Location: Washington state
Posts: 186
My guess is that you have a vacuum leak or the vacuum switch in the transfer case is doing something funky. All of your 4wd is operated by vacuum except the one switch that turns the light on and off.

__________________
95 YJ TBI Vortec 350, 700R4
18derrick is offline   Quote Quick Reply
Old 08-09-2008, 12:54 PM   #3
Newb
 
Join Date: Aug 2008
Location: phoenix
Posts: 6
Thanks. The possible causes you describe, are those easy fixes?
The question has to do with the fact that I keep my trusty '93 YJ in Mexico for when I am there: although there are competent mechanics there they don't necessarily have access to the wealth of information we have here at home.

Have a great weekend
frankfletez is offline   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


Similar Threads
Thread Thread Starter Forum Replies Last Post
check engine light gamecock22 TJ General Discussion Forum 21 03-05-2012 02:15 PM
Check Engine Light vin211 TJ Tech Forum 4 04-07-2008 09:12 AM
Idling strange = check engine light? Rubigoddess TJ Tech Forum 6 03-01-2008 12:38 PM
Check engine light 94redwrangler YJ Tech Forum 2 12-19-2007 03:48 PM
check engine light? off road rescue TJ Tech Forum 1 03-14-2007 11:49 PM


logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:18 PM.



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