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Unread 09-07-2013, 03:14 PM   #1
radcustoms
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Join Date: May 2013
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Ticking noise when shut down and occasional stall

Trying to figure out what's wrong with my 1988 4.0 renix jeep cherokee. Just wondering, do they always make a ticking noise when shut down and then the noise goes away after a minute or two. Sounds like it is coming from the valve train. And also on occasion while driving up a small grade it will stall but will not do it if engine is operating temperature. And when it stalls it starts right back up and runs fine. Any ideas?

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Unread 09-07-2013, 10:22 PM   #2
uberxj92
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1992 XJ Cherokee 
 
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The ticking maybe just be the engine cooling.
Stalling up hill maybe low fuel or the fuel pump resistor located on the driver's fender. It is white with 2 wires and 1 bolt. Its ceramic and like $5.
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Unread 09-07-2013, 10:36 PM   #3
cruiser54
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1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
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Quote:
Originally Posted by radcustoms View Post
Trying to figure out what's wrong with my 1988 4.0 renix jeep cherokee. Just wondering, do they always make a ticking noise when shut down and then the noise goes away after a minute or two. Sounds like it is coming from the valve train. And also on occasion while driving up a small grade it will stall but will not do it if engine is operating temperature. And when it stalls it starts right back up and runs fine. Any ideas?
Click on the link in my signature. #1 and #2 for sure. #3 and #7 would be a good idea also.

How's your tuneup parts? Plugs, wires, cap and rotor should be replaced every 30,000 miles. Do you know when it was last done?

Clean the throttle body and IAC. Instructions below:
Courtesy of TJWalker:
--------------------------------------------------------------------
The Idle Air Control (IAC) is mounted on the back of the throttle body. (front for 87-90) The valve controls the idle speed of the engine by controlling the amount of air flowing through the air control passage. It consists of a stepper motor that moves a pintle shaped plunger in and out of the air control passage. When the valve plunger is moved in, the air control passage flows more air which raises the idle speed. When the valve plunger is moved out, the air control passage flows less air which lowers the idle speed. Over time and miles, the IAC can get carboned up which can have an adverse affect on idle quality. Cleaning the IAC may restore proper function and is an easy procedure to perform and good preventive maintenance so it is never a bad idea.

CLEANING THE JEEP 4.0 IDLE AIR CONTROL

Remove the air filter cover, associated hoses and the rubber boot that goes from the air filter cover to the throttle body. Remove the IAC with a torx driver (2 bolts; one can be kind of hard to get to)

“Gently” wiggle out the IAC from the throttle body. Gasket on the IAC can be re-used if it is not damaged

Clean the IAC with a spray can of throttle body cleaner; inexpensive and available at any place that sells auto parts. Throttle body cleaner is recommended rather than carburetor cleaner as it is less harsh, safe for throttle body coatings and is best for this task. Use cleaner, a rag and a toothbrush and or Q-Tips. Be gentle; don’t twist or pull on the pintle that protrudes from the IAC as it is fragile and you could damage it.

Thoroughly spray clean and flush where the IAC seats in the throttle body with the same spray cleaner

It is also a good idea to clean the entire throttle body itself, the butterfly valve inside of the throttle body and all associated linkage as long as you have things disassembled
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Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 09-07-2013, 10:49 PM   #4
radcustoms
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Tuneup was just done all new parts about 3,000 miles ago.
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Unread 09-08-2013, 06:53 AM   #5
cruiser54
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1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,252
Quote:
Originally Posted by radcustoms View Post
Tuneup was just done all new parts about 3,000 miles ago.
Good. Plugs, wires, cap and rotor?

On to the ground refreshing and stuff in my "tips" link along with throrrle body cleaning then.
__________________
Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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