diagnosis 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 > General Technical Discussions > Engines & Drivetrain > diagnosis 2.5

ROCK BOTTOM prices on LIFT KITS at Rockridge4wd!! WANT TO Alloy usa heavy duty ball joint kitsWe have FLASHLIGHTS! Great for your Emergency bag!

Reply
Unread 07-19-2007, 10:40 PM   #1
ErikJordan
Pimp Hand
 
ErikJordan's Avatar
1995 YJ Wrangler 
 
Join Date: Apr 2002
Location: Lakewood CA
Posts: 5,088
diagnosis 2.5

1988 yj 2.5 TBI

this thing has been trouble free for a long time, now i have a problem i cant figure out.

it was pulled into the driveway a bit sluggish, so my wife left it and took the truck to work.

i went out to see what was wrong with it, assuming she ran it out of gas again.
it started right up for me, but the ildle roared to about 2800 and stayed there.

it appears that the Idle Speed Actuator (isa) is keepng it there.

i figure, pull the plug and it will let off, right? NO.
i commence to pulling plugs on the rest of the crap that is on the throttle body, and there is no change.
this damn thing still roars at 2800 rpm.

so i put them all back... no change.

any thoughts on this thing?
there are no vacuum leaks that i hear or see.

__________________
___________________________________________


What is all of this talk of Savvily designed products?
ErikJordan is offline   Reply With Quote Quick reply to this message
Unread 07-21-2007, 09:21 AM   #2
jadams68
Registered User
1984 CJ7 
 
Join Date: Aug 2002
Location: Downingtown, PA
Posts: 2,898
Not seeing or hearing the leak doesn't mean you don't have one at the manifold.
If it were me, I'd find a local shop that has a "vacuteck" or "smoke machine" that they hook to your intake and blow smoke through the engine...where you see smoke, you have a vacuum leak. It will atleast give you peace of mind. The other thing may be the Idle Actuator like you mentioned.

Is the check engine light on?


Quote:
Originally Posted by NAILER341
1988 yj 2.5 TBI

this thing has been trouble free for a long time, now i have a problem i cant figure out.

it was pulled into the driveway a bit sluggish, so my wife left it and took the truck to work.

i went out to see what was wrong with it, assuming she ran it out of gas again.
it started right up for me, but the ildle roared to about 2800 and stayed there.

it appears that the Idle Speed Actuator (isa) is keepng it there.

i figure, pull the plug and it will let off, right? NO.
i commence to pulling plugs on the rest of the crap that is on the throttle body, and there is no change.
this damn thing still roars at 2800 rpm.

so i put them all back... no change.

any thoughts on this thing?
there are no vacuum leaks that i hear or see.
__________________
-----------------------
I used to own two CJ's...Perhaps a 3rd is in the future?
jadams68 is offline   Reply With Quote Quick reply to this message
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.
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


Suggested Threads





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.