Best place to connect fuel pressure gauge on 89 I4 2.5L? - JeepForum.com
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Unread 09-23-2013, 08:30 AM   #1
JeepArt
Registered User
1989 YJ Wrangler 
 
Join Date: Sep 2013
Location: Pottstown, PA
Posts: 51
Best place to connect fuel pressure gauge on 89 I4 2.5L?

Where is the best place to connect the fuel pressure gauge on the TB for a 89 I4 2.5L? There seems to be a port on the side of the TB but no standard connectors fit that port.

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Unread 09-23-2013, 08:58 AM   #2
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,549
Shaefs thread in this post:
Quote:
Originally Posted by Que89YJ View Post
The pressure is only 14 psi on the TBI. You should look at the rebuild kit with replacement injector for the throttlebody. This is in the Schaef thread below:
How to google the forum:
http://www.jeepforum.com/forum/f12/f...oogle-1003734/[/URL]
To download the fsm:
http://dl.dropbox.com/u/40590346/87-88%20YJ%20Jeep%20Wrangler%20FSM%20manual.pdf[/URL"]http://api.viglink.com/api/click?format=go&key=c3c53278e61f21f919d3e084737fce af&loc=http%3A%2F%2Fwww.jeepforum.com%2Fforum%2Ff1 2%2F1990-yj-2-5l-tbi-progressively-losing-power-until-you-restart-1414928%2F&v=1&libid=1363785114335&out=http%3A%2F% 2Fdl.dropbox.com%2Fu%2F40590346%2F87-88%2520YJ%2520Jeep%2520Wrangler%2520FSM%2520manual .pdf&title=1990%20YJ%202.5L%20TBI%20Progressively% 20Losing%20Power%2C%20until%20you%20restart%20-%20JeepForum.com&txt=%3CFONT%20color%3D%23810081%3 Ehttp%3A%2F%2Fdl.dropbox.com%2Fu%2F40590346%2F87-88%2520YJ%2520Jeep%2520Wrangler%2520FSM%2520manual .pdf%3C%2FFONT%3E&jsonp=vglnk_jsonp_13637851486015 "]http://dl.dropbox.com/u/40590346/87-88%20YJ%20Jeep%20Wrangler%20FSM%20manual.pdf[/URL]
http://dl.dropbox.com/u/40590346/1990%20Jeep%20Factory%20Service%20Manual.pdf[/URL]
If you download the FSM and you are not a member of dropbox, please PM Ninjakid and join under him. It gives him more space to store and it is a real generous thing to get the manual for free!
http://jeepspace.jeepforum.com/ninjakid[/URL]
Also lots of good info in Shaef's threads about his TBI:
http://www.jeepforum.com/forum/f12/8...ocess-1293442/[/URL]
http://www.jeepforum.com/forum/f12/2...-idle-1293410/[/URL]

Get a multimeter. Some of the pre 91 tbi sensors require an adjustment to setup when replaced. Since you are dealing with PO that probably didn't know, chances are you need to do some adjustments with the basic tune up. Wide open throttle switch(WOT), the throttle position sensor(TPS), Idle Speed Adjustment Motor(ISA), and the fuel pressure on the throttle body.
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Unread 09-23-2013, 08:59 AM   #3
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,549
Easier to read:
The pressure is only 14 psi on the TBI. You should look at the rebuild kit with replacement injector for the throttlebody. This is in the Schaef thread below:

How to google the forum:
http://www.jeepforum.com/forum/f12/f...oogle-1003734/

To download the fsm:
http://dl.dropbox.com/u/40590346/87-88%20YJ%20Jeep%20Wrangler%20FSM%20manual.pdf
http://dl.dropbox.com/u/40590346/1990%20Jeep%20Factory%20Service%20Manual.pdf

If you download the FSM and you are not a member of dropbox, please PM Ninjakid and join under him. It gives him more space to store and it is a real generous thing to get the manual for free!
http://jeepspace.jeepforum.com/ninjakid

Also lots of good info in Shaef's threads about his TBI:
http://www.jeepforum.com/forum/f12/8...ocess-1293442/
http://www.jeepforum.com/forum/f12/2...-idle-1293410/


Get a multimeter. Some of the pre 91 tbi sensors require an adjustment to setup when replaced. Since you are dealing with PO that probably didn't know, chances are you need to do some adjustments with the basic tune up. Wide open throttle switch(WOT), the throttle position sensor(TPS), Idle Speed Adjustment Motor(ISA), and the fuel pressure on the throttle body.
Que89YJ is offline   Reply With Quote




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