98 TJ 4.0 timing - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 05-17-2001, 12:43 PM
Posts: n/a
98 TJ 4.0 timing

Any body know the correct procedure for checking the timing on a 98 TJ with 4.0 and a 5-speed. Most every vehicle I have had, there was something you either had to disconnect or disable to check timing. Any help would be appreciated.

Jeeps, Guitars, Jeeps, Guitars,....What else is there????
Sponsored Links
post #2 of (permalink) Old 05-17-2001, 02:22 PM
Posts: n/a
Re: 98 TJ 4.0 timing

I don't think you can check the timing, its all done by on board computer. That is if you installed the distributor correctly. Someone correct me if I'm wrong.

Nycjeep88 [img]/wwwthreads_images/icons/smile.gif[/img][img]/wwwthreads_images/icons/cool.gif[/img][img]/wwwthreads_images/icons/wink.gif[/img]

Let's go baja in NYC and see how well your suspension holds up.... [img]/wwwthreads_images/icons/smile.gif[/img]
post #3 of (permalink) Old 05-17-2001, 11:52 PM
Can't Get Enough
Join Date: Sep 1999
Location: Cotopaxi, Colorado
Posts: 1,036
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 98 TJ 4.0 timing

nycjeep88 is correct. The timing is non adjustable. It is determined by the crank angle sensor in the bell-housing. The pick-up in the dist. is called the cam angle sensor, and is primarly used to control injector timing. Your 4.0l has sequential port fuel injection, as the injectors are timed relative to the intake stroke. There is a "high altitude" crank angle sensor that advances the timing 8 crankshaft degrees, which is 4 dist. degrees.

dorfs is offline  
Sponsored Links
post #4 of (permalink) Old 05-18-2001, 07:18 AM
Posts: n/a
Re: 98 TJ 4.0 timing

I appreciate the replies. I don't have a problem, just did routine maint. and was stumped when I saw label underhood that said no adj. necessary. Once again, thanks.

Jeeps, Guitars, Jeeps, Guitars,....What else is there????
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups 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:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome