89 YJ turns off in gear. Help Needed. - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Build Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-03-2013, 08:28 AM   #1
phnguyen7's Avatar
Join Date: Jun 2012
Posts: 85
89 YJ turns off in gear. Help Needed.

I have an 89 YJ 4.2 Auto. It idles fine in park and neutral but when I put it in reverse or drive it will die out. Any ideas? Some times in park or neutral it would die out too but the engine idles for awhile before it dies. When in gear it will die right away. Thanks in advance.
phnguyen7 is offline   Quote
Old 05-03-2013, 12:59 PM   #2
kik's Avatar
Join Date: Dec 2008
Posts: 7,863
Your idle in park/neutral hot should be at least 750-800 rpm's.

kik is offline   Quote
Old 05-03-2013, 01:31 PM   #3
Founder, ThumbJeeps

WF Supporting Member
sevenservices's Avatar
Join Date: Sep 2009
Location: Mid-Michigan/Thumb
Posts: 4,019
possible water splashing around in the float bowl of the carb. I used to do small engine repair, its a different animal for sure but the comon factor is that a mower will sit and run all day with water in the gas. The second it sloshes by movement the water droplets get sucked in and it dies.

Water will puddle to the bottom of gas like clear marbles in a the bottom of a glass jar. Sitting still, your fine. Move and your stalling w/wet spark plugs.
Founder, ThumbJeeps
"roads are boring"

1994 Wrangler YJ I6 4.0 H/O Auto 3 spd. 3:55 Gears
sevenservices is offline   Quote
Old 05-03-2013, 02:46 PM   #4
AllMudd's Avatar
Join Date: Apr 2013
Location: SoCal
Posts: 1,610
Not to sure either but I've heard that this will happen with a bad Xsmn or torque converter being locked up constantly when it shouldn't be until you get on if. Just my .02$
AllMudd is offline   Quote
Old 05-03-2013, 06:57 PM   #5
phnguyen7's Avatar
Join Date: Jun 2012
Posts: 85
hmm forgot to mention the jeep has a howell tbi. The idle is around 700 in park and neutral. Sounds like it might be the torque converter. Would a vacuum leak make the engine shut off in drive or reverse?
phnguyen7 is offline   Quote
Old 05-03-2013, 08:52 PM   #6
Squirrel 442's Avatar
Join Date: Mar 2013
Posts: 153
Check the fuel filter too. If it is clogged it could have similar symptoms. You barely need ant fuel to idle. Easy check before pulling the torque converter.
Squirrel 442 is offline   Quote
Old 05-03-2013, 09:42 PM   #7
phnguyen7's Avatar
Join Date: Jun 2012
Posts: 85
fuel filter was changed out less than 3k miles ago. would it be able to get dirty that quick? sounds like it can be the problem though

phnguyen7 is offline   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not 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

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 08:24 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

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