Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > '95 YJ Rough idle/running rich/lean?

Join Wrangler Forum Today

Thread: '95 YJ Rough idle/running rich/lean? Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
07-03-2012 11:46 PM
OverkillYJ I would say it may have something to do with your O2 sensors. That reads your exhaust and says if it need more or less fuel and adjusts the injectors. You may also want to have your injectors proffesionally cleaned. Could also be fuel pump is starting to go. I am listing these assuming you checked the air filter and throttle badge intake making sure there is no debris or other obstructions. All the other things I listed are a pain to do yourself and are better off taking it somewhere, unless you have the proper tools. O2 sensors for example will probably need some serious heat to break free as well as a special socket.
07-03-2012 08:31 PM
'95 YJ Rough idle/running rich/lean?

So my YJ is definitely running rich or lean, and it has a rough idle. The tach reads about 450rpm, but the Jeep thumps at around 110 "thumps" per minute...are these connected? If I had a carb'd engine I'd be out there adjusting it, but neither me nor my dad know anything about fuel injection.

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

All times are GMT -5. The time now is 10:20 PM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC