89 YJ 258 engine misfiring - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 07-12-2006, 11:57 PM Thread Starter
mluko22
Registered User
 
Join Date: Jul 2006
Location: New Jersey
Posts: 2
89 YJ 258 engine misfiring

I Need Help!!!!
I Purchased A 1989 Wrangler W/258 5 Speed Trans. The Vehicle Was Sitting For 10 Years. I First Put A Fuel Pump On It Ran 4 A Short Time Befor It Misfired. Next Was Tune Up, Then Distributor And Coil Then Computer. I Was Told By Someone That The Carbs On That Year Had Problems So I Put A Weber 38cfm Carb. Runs Good Until It Gets Hot And Runs For A While Then It Misfires. I Pluged A New Ignition Module In To See If That Was It, No Luck I Dont Know What Else To Do Or Replace. Ive Had The Jeep For A Year (toy/hobbie) Playing With It But Its Really Getting Old!! Thanks Mike

mluko22 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 07-13-2006, 01:18 AM
EMT
Registered User
 
Join Date: Jan 2005
Location: oklahoma
Posts: 474
google the nutter bypass,it may or may not fix your problem but it sure wont hurt.

88yj hardtop ,4.2 i6, 3.5 BDS lift,1"daystar bl,165 amp alt. ,homemade1"mml with 33" 12.50 baja claws ,mickey thompson classic locks .aussie locker in front and a warn 8000lb winch.2 kc daylighters on the windsheild,2 55w driving lights on the bumper.pioneer cd and speakers,sound bar and amp.ford taurus fan and tfi ignition upgrade.mc2150 upgrade,discoed.nutter bypass,8.8 rear end ,grant steering wheel.
EMT is offline  
post #3 of 4 Old 07-15-2006, 02:59 AM
King03Kev
Registered User
 
King03Kev's Avatar
1987 YJ Wrangler 
 
Join Date: Oct 2005
Location: NJ
Posts: 615
Did you consider cat or exhaust problems? How about feul delivery? Did you change filters? How about jet sizes for Weber carb, if higher mileage 38 could be too much fuel.

kevyj87 '87 I6 5spd, 215,000+ miles, Herced, Nuttered, Weber, HEI, RE 4", 1" BL, 4:11's, np231, 33x12.5's, SYE & shaft, 1" brown dog mm, home made bumpers front & rear, Ramsey 8,000lb winch
King03Kev is offline  
post #4 of 4 Old 07-20-2006, 05:56 PM Thread Starter
mluko22
Registered User
 
Join Date: Jul 2006
Location: New Jersey
Posts: 2
possible fuel problem the fuel filter on top of the motor seem to drain down when it sits?
mluko22 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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Code 302: 2nd cylinder misfiring/overheating engine italianpny43 TJ Wrangler Technical Forum 0 08-16-2009 11:53 AM
engine misfiring at driving speeds djturtle31 YJ Wrangler Technical Forum 3 01-11-2009 10:12 AM
'90 Jeep Wrangler Engine Misfiring Urb4nTr0ll YJ Wrangler Technical Forum 3 12-17-2008 04:24 PM
misfiring brundz YJ Wrangler Technical Forum 3 11-21-2005 08:34 PM
engine is misfiring I think... jackal TJ Wrangler Technical Forum 1 10-10-2003 01:01 AM

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