Another backfiring/ hesitation thread....89 2.5 - JeepForum.com
Search  
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 JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Another backfiring/ hesitation thread....89 2.5

ANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete ROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail Engo winches available at www.rockridge4wd.com! Free shipp

Reply
Unread 08-23-2013, 09:39 AM   #1
Fellows45
Member
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green, Kentucky
Posts: 222
Another backfiring/ hesitation thread....89 2.5

Alright guys I've read and read about this problem but it seems as if my situation is a little more unique than the standard hesitation/ backfiring thread.

So yesterday I started my 4 hour roadtrip in the old girl and she was running like a top. Cuising in 5th gear at 75 mph doing 2900 rpm and with the occasional 4th gear pass, nothing too crazy. Well the first 3 hours of the 4 hour trip where great. (I also stopped and filled up at shell at the 2.5 hour mark). Well about 45 mins out of my destination **** seemed to hit the fan. She would bog down and hesitate to about 55 miles per hour them I would change to 4th gear and every time with that chance she would backfire and I would barely have enough power to maintain speed. Then she would act fine and run great for a minute then do it again. I was almost full on gas and had been driving her for the better part of 3 hours, so my question is what could possible be causing this?

1 if it where a worn timing chain, wouldn't it be plenty heated up by the first hour let alone he third hour and start showing play? And besides the hesitation was intermittent so wouldn't that rule it out?

2 cat. Wouldn't the same thing go for the cat? Wouldn't it run like crap the whole time? I stead of the third hour of the trip?

3 tps, I just replaced my tps a month ago, could your tps go bad I'm such a short time?

4 I was using good gasoline from shell, so I don't think bad gas was the problem.

I'm at a loss on this one guys. Thanks for the help!

Fellows45 is offline   Reply With Quote Quick reply to this message
Unread 08-23-2013, 12:44 PM   #2
Fellows45
Member
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green, Kentucky
Posts: 222
Bump anyone? I need to get her back on the road Sunday and some advice would be nice!
Thanks all
Fellows45 is offline   Reply With Quote Quick reply to this message
Unread 08-23-2013, 01:24 PM   #3
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
Cat could be intermittant because of loose material is basically bouncing around in the cat blocking the exhaust. The timing chain is an easy check by looking at the distributor and moving the crank with the pulley nut until you see the rotor moving then move it the other direction until you see the rotor move. Shouldnt be move more then about 1/4" or so. Check for codes. Check the distributor and make sure its tight and check the map vacuum like for leaks.
Que89YJ is offline   Reply With Quote Quick reply to this message
Reply

Tags
backfiring , hesitation , intermittent , running poor

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.
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:

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






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