Pops when warm
my 1990 Comanche 4.0 renix reaches normal operating temp 195 , then wants to crap out , pops through throttle body , like lack of fuel or timong issue ?
any suggestions or links to help diagnose
thanks
any suggestions or links to help diagnose
thanks
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,577
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Timing is controlled by the ECU.
Perhaps coincidentally the fuel pump is overheating and losing pressure as it gets hot.
Could also be a CPS crapping out when warm.
Go to post 7 in my Renix Tips link below and see how to test it. Also, verify teh wire harness routing is correct per the photo in the post.
Gotta ask this also: How many of my Tips have you performed sso far?
Perhaps coincidentally the fuel pump is overheating and losing pressure as it gets hot.
Could also be a CPS crapping out when warm.
Go to post 7 in my Renix Tips link below and see how to test it. Also, verify teh wire harness routing is correct per the photo in the post.
Gotta ask this also: How many of my Tips have you performed sso far?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,577
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,577
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Somebody around here could do it. Not me. I would love to have it to share like that. What about the photos?
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i found one at dealer , nos ?
installed it , what i nightmare to install , sensor itself from top and bolts w/ tape to flex socket and 4 extensions later success ! been idleing over a hour and no problems , i also did coil cleaning as recomended by cruiser 54 and several tests and cleaning , but the sensor tested bad with AC volt test not ohm test !!
oil and dirt build up on sensor coming from bad slave cyl leak over time
thanks everybody who replied, now on to trans issue pulling clutch , lucky i have aisin ax trans and 2wd...

a very special thanks to cruiser 54 and his renix list !!!!!!!!!!!!!!!!!!!!!!!!!!!
Moderator CF K9-unit
Joined: Apr 2012
Posts: 5,842
Likes: 12
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
Last edited by Dumajones; Sep 10, 2014 at 02:18 AM.
that's all i know , and my flange to block is leaking !
thanks matt...


