Pouring Out Coolant After Long Ride
Junior Member
Joined: Sep 2016
Posts: 67
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Model: Cherokee
My 89 did this to my daughter twice, temperature gauge reading normal, just below 210. I diagnosed the 2nd fan relay was bad and replaced it, did it again (overflowed) last night after work. I picked up the Jeep this morning and noticed the cap is an AC Delco marked 0.9 Bar which equals 13 lbs. My XJ has been converted to open cooling system so I got a new 16# cap at NAPA and drove it 40 miles home; so far, so good.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
My 89 did this to my daughter twice, temperature gauge reading normal, just below 210. I diagnosed the 2nd fan relay was bad and replaced it, did it again (overflowed) last night after work. I picked up the Jeep this morning and noticed the cap is an AC Delco marked 0.9 Bar which equals 13 lbs. My XJ has been converted to open cooling system so I got a new 16# cap at NAPA and drove it 40 miles home; so far, so good.
Thread Starter
Junior Member
Joined: Mar 2017
Posts: 77
Likes: 0
Model: Cherokee
Follow up: I went with the Stant 10231. It was cheap and it has solved the problem, thank you.
Seasoned Member
Joined: Jun 2013
Posts: 380
Likes: 1
From: Southern California ( for now)
Year: 1994
Model: Cherokee
Engine: 4.0L, In Line 6
I'll take your advice and change my safety lever cap. Can you explain why they're not good to use?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Seasoned Member
Joined: Jun 2013
Posts: 380
Likes: 1
From: Southern California ( for now)
Year: 1994
Model: Cherokee
Engine: 4.0L, In Line 6
now I have same issue as the cap psi
Is it 13psi, 12psi or 16psi
I have 94 Cherokee Sport, 4.0L
When checking with AZ and OReilly, their books list 16psi for the 2.5L, 4cyl, and 13psi for 4.0L.
I have believe closed system with overflow reservoir . What is the difference in open system? Seems open system means no pressure build up? What am I missing?
Is it 13psi, 12psi or 16psi
I have 94 Cherokee Sport, 4.0L
When checking with AZ and OReilly, their books list 16psi for the 2.5L, 4cyl, and 13psi for 4.0L.
I have believe closed system with overflow reservoir . What is the difference in open system? Seems open system means no pressure build up? What am I missing?
Last edited by jmrec100; Jul 4, 2017 at 07:40 PM.