renix overheating weird.
CF Veteran
Joined: Aug 2011
Posts: 10,489
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Looks like Djb was right again. (I did a little searchen), See "Sanddad, post #15>>>> https://www.cherokeeforum.com/f2/ren...d-shift-63044/
I don't know if you might need a later model switch though. It's allot hotter at the t-stat housing then it is down there at the original switch. Just last week I saw 176* on the switch, (fan running), and over 215* on spots on my t-stat housing. (IR temp gun).
I don't know if you might need a later model switch though. It's allot hotter at the t-stat housing then it is down there at the original switch. Just last week I saw 176* on the switch, (fan running), and over 215* on spots on my t-stat housing. (IR temp gun).
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 515
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From: ogden, utah
Year: 2000
Model: Cherokee
Engine: l6
Looks like Djb was right again. (I did a little searchen), See "Sanddad, post #15>>>> https://www.cherokeeforum.com/f2/ren...d-shift-63044/
I don't know if you might need a later model switch though. It's allot hotter at the t-stat housing then it is down there at the original switch. Just last week I saw 176* on the switch, (fan running), and over 215* on spots on my t-stat housing. (IR temp gun).
I don't know if you might need a later model switch though. It's allot hotter at the t-stat housing then it is down there at the original switch. Just last week I saw 176* on the switch, (fan running), and over 215* on spots on my t-stat housing. (IR temp gun).
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
We need a Renix expert to chime in here. I'm thinking the Renix radiator style sending unit triggers at a lower temp than the late model stat housing style sending unit. So, if a rad style sending unit was relocated to the stat cover, it would signal the efan too soon/too low temp.
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Joined: Aug 2011
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
We need a Renix expert to chime in here. I'm thinking the Renix radiator style sending unit triggers at a lower temp than the late model stat housing style sending unit. So, if a rad style sending unit was relocated to the stat cover, it would signal the efan too soon/too low temp.
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
So, if a rad type sensor turns on at 208 and it was mounted in the stat cover, it would likely have the efan running more often and maybe for longer times as well....depending on the driving conditions.
Last edited by djb383; Oct 19, 2014 at 08:33 PM.
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 515
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From: ogden, utah
Year: 2000
Model: Cherokee
Engine: l6
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Kind of what I was thinking. Mr Cruiser is likely using his DRB II scanner, which likely is reading his engine temp sensor. (so the thick plottens!)
I can mess this up even more. My fan comes on with the relay on the left inner fender removed. I've yet to locate another relay......until I DO, I've got to figure that switch is handling fan current.
Manning just broke Bret Farbs passing touchdown record!(still in the first 1/2).
Yes, it stands to reason that the later, in the hot housing kicks on at a higher temp, than the Renix down on the "cool" side of the rad.
I can mess this up even more. My fan comes on with the relay on the left inner fender removed. I've yet to locate another relay......until I DO, I've got to figure that switch is handling fan current.
Manning just broke Bret Farbs passing touchdown record!(still in the first 1/2).
Yes, it stands to reason that the later, in the hot housing kicks on at a higher temp, than the Renix down on the "cool" side of the rad.
Last edited by DFlintstone; Oct 19, 2014 at 08:49 PM.
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Sorry, cheerleaders aside, Texas screws everything up. Take Bush and Ebola for example...."hey, let's start two wars, lower taxes for the rich, and turn a sick guy from Africa out of the ER back into the public...see how that goes.




CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
10-4! The pilot pulled back on the controls and prevented a crash. (unfortunantly none of the co-conspirators went to prison) A miracle it's even flying, what with all the help from congress. At least we are giving the rest of the modern world a good laugh!


