OEM thermostats are now MotoRad?
12-28-2013, 09:56 PM
#137
Senior Member
Join Date: Nov 2012
Location: Harrisburg, Pennsylvania
Posts: 918
Likes: 0
Received 3 Likes
on
3 Posts
Year: 1995
Model: Cherokee
Engine: 4.0L HO
Even with the valve in place coolant still flows through the upper hose to the valve at all times. If the valve is closed the coolant flows back through the lower hose bypassing the heater core, if the valve is open coolant flows through the heater core than back through the lower hose.
12-28-2013, 10:36 PM
#138
CF Veteran
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,172
Likes: 0
Received 15 Likes
on
15 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Yep, that's the coolant "bypass loop"......constant coolant flow thru the block and head the moment the motor is started.
12-29-2013, 06:47 AM
#139
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
01-12-2014, 04:33 PM
#140
Finally got around to replacing my "Modified" Failsafe thermostat today.......
I used the high-flow, balanced one from Mr Gasket (the same one that Hesco sells) I got it for $11.00
I also like the fact that it's "Made in USA"!
It doesn't have a jiggle valve for a bleed, but it does have a small notch in it with a tiny hole for a bleed. I installed it facing up.
I'm sure it will perform better than the Motorad Failsafe one that I had.........I'll post back after it's been in for awhile.
I used the high-flow, balanced one from Mr Gasket (the same one that Hesco sells) I got it for $11.00
I also like the fact that it's "Made in USA"!
It doesn't have a jiggle valve for a bleed, but it does have a small notch in it with a tiny hole for a bleed. I installed it facing up.
I'm sure it will perform better than the Motorad Failsafe one that I had.........I'll post back after it's been in for awhile.
01-18-2014, 06:39 PM
#141
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Went to the dealership I used to work at today. Drove a 2014 Cherokee Trailhawk with the 2.4L four cylinder.
Went to see my old buddy George in the Parts Department and we checked out the factory thermostats.
83501426 is a 195* stat with 3 gaskets in the box.
52028186 is just the 195* stat. No gaskets. About $7 cheaper.
Same stat either way.
Went to see my old buddy George in the Parts Department and we checked out the factory thermostats.
83501426 is a 195* stat with 3 gaskets in the box.
52028186 is just the 195* stat. No gaskets. About $7 cheaper.
Same stat either way.
01-20-2014, 11:10 AM
#142
CF Veteran
Join Date: Oct 2009
Location: Fauquier County, Virginia
Posts: 2,867
Likes: 0
Received 15 Likes
on
13 Posts
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
I just pulled my old crap Stant tstat. About to install the new one (and if time the new efan and prop valve). I will report back. Hopefully something good, because were set to get some snow tomorrow.
Last edited by 1991Jeep_Man; 01-20-2014 at 12:47 PM.
01-20-2014, 04:21 PM
#143
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
01-20-2014, 09:10 PM
#145
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
01-20-2014, 09:24 PM
#146
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes
on
12 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
I'm tired and lazy also, but have a penchant for being facetious.
https://www.cherokeeforum.com/f2/one...oments-186872/
https://www.cherokeeforum.com/f2/one...oments-186872/
01-20-2014, 11:04 PM
#148
CF Veteran
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 18 Likes
on
18 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
That looks allot like the failed T-stat that I replaced with with what Napa gave me a few years back. That one functioned, but didn't quite seal when closed. Now I have the Mopar...it seems better.
01-21-2014, 12:41 PM
#149
CF Veteran
Join Date: Oct 2009
Location: Fauquier County, Virginia
Posts: 2,867
Likes: 0
Received 15 Likes
on
13 Posts
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Report on my MotoRad unit: not too promising yet. However, I believe there to be air in the system yet to bleed out. I am still getting temp fluctuations while cruising. At idle though, it seems good enough holding at 210.
Hopefully as air purges out this problem will resolve because it heats up faster and when the temp fluctuates down, it is quick to heat back up to 210.
Hopefully as air purges out this problem will resolve because it heats up faster and when the temp fluctuates down, it is quick to heat back up to 210.
01-22-2014, 09:26 AM
#150
CF Veteran
Join Date: Dec 2012
Location: York, PA
Posts: 4,169
Likes: 0
Received 6 Likes
on
6 Posts
Year: 1998
Model: Cherokee
Engine: 4.0
Well, I thought I'd add my recent situation to this thread. I have a Napa 195° stat that wasn't giving me problems until my heat started going cold again about a week ago. Perfect timing, when it's 0 degrees out and I can't defrost my windows. I'm going to pick up a Mopar stat from the stealership today. I thought the NAPA's were fine, but I should've listened! 