is my jeep running too cold??

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Aug 22, 2012 | 04:16 PM

#16

Radi

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Joined: Apr 2012

Posts: 5,302

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From: Wisconsin

Model: Cherokee

Quote:

Originally Posted by djb383

Why would u put a stat in boiling water?.....coolant should never boil in a properly maintained cooling system.

It's a convenient way to know you're at 212 degrees. A 190 should be fully open just before the water boils.

Then add a little celery, some noodles...

Aug 22, 2012 | 04:19 PM

#17

car5car

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Joined: Jan 2012

Posts: 415

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From: FL

Year: 2001

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by cruiser54

So you're saying it opened twice as FAR?

I guess, I didn't explain it good enough.
Let us say Advance moved 1/4 inch, NAPA 1/2 inch

Last edited by car5car; Aug 22, 2012 at 04:22 PM.

Aug 22, 2012 | 04:39 PM

#18

djb383

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

So how far open is that "no t-stat" when the needle reaches the red?

Again, a t-stat does one thing only.....control minimum temp. All of the other cooling system components, their condition, along with ambient temp and driving conditions determine max coolant temp.

Aug 23, 2012 | 05:25 PM

#19

studmuffin

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Joined: Mar 2009

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From: Tucson, AZ

Year: 1991

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Bbasso

I don't understand the logic here...
If you are worried it's running too cool/cold then put the STOCK 195 deg thermostat in. doesn't require a degree is Science or a ASE certification...
A thermostat will keep a min operating temp of aprox 195.

If you are worried about overheating, then you have other issues with your cooling system.
I proper working thermostat will not cause overheating, just prevent over cooling.

Ive had nothing but problems with thermostats and this is Arizona its hotter than the very bowels of hell down here. Im simply asking if 165-180 is too cold and if Its risky running it like this. I know what a thermostat does.

Aug 23, 2012 | 05:29 PM

#20

studmuffin

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From: Tucson, AZ

Year: 1991

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by djb383

Why would u put a stat in boiling water?.....coolant should never boil in a properly maintained cooling system.

Thats the way to check if a new stat works those things cant be trusted ive had my share of defectives.

Quote:

Originally Posted by djb383

So how far open is that "no t-stat" when the needle reaches the red?

Again, a t-stat does one thing only.....control minimum temp. All of the other cooling system components, their condition, along with ambient temp and driving conditions determine max coolant temp.

I dont worry about it much anymore and it never reached red line, got close but it never actually overheated. The manual switch I have for the electric fan keeps it from getting too hot.

Last edited by studmuffin; Aug 23, 2012 at 05:37 PM.

Aug 23, 2012 | 06:12 PM

#21

djb383

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Joined: Nov 2009

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Thought I read "reach red line pretty easy" in post #1.

Aug 23, 2012 | 06:43 PM

#22

cruiser54

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Joined: Aug 2011

Posts: 43,971

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From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by studmuffin

Thats the way to check if a new stat works those things cant be trusted ive had my share of defectives.

I dont worry about it much anymore and it never reached red line, got close but it never actually overheated. The manual switch I have for the electric fan keeps it from getting too hot.

Just put a factory stat in it and be done with it.

Aug 24, 2012 | 05:30 PM

#23

studmuffin

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From: Tucson, AZ

Year: 1991

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by djb383

Thought I read "reach red line pretty easy" in post #1.

gets close but no cigar and only at slow speeds aka wheeling does it heat up more than usual.

Aug 24, 2012 | 05:35 PM

#24

studmuffin

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From: Tucson, AZ

Year: 1991

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by cruiser54

Just put a factory stat in it and be done with it.

Might just have to but this is how it was when I was troubleshooting overheating problems. I went through 3 thermostats none of them opened up and one was $10 fail safe t stat.......

tstat=overheating

no tstat= temp fine

Next time i put in a t stat I think im gonna do the 2 hole mod.