Re: 2000 JGC V-8 overheating/ occasionally only !!
 

It 'doesn't' operate properly, hence the overheating....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Jon wrote:
>
> ...
>
> Please explain how a good fan clutch will operate properly with a
> clogged (intermittently or not) radiator.
>
> ...

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

It 'doesn't' operate properly, hence the overheating....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Jon wrote:
>
> ...
>
> Please explain how a good fan clutch will operate properly with a
> clogged (intermittently or not) radiator.
>
> ...

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <4584B494.BF5AED87@cox.net>,
L.W.(Bill) ------ III <----------@cox.net> wrote:
#Hi James,
# I would replace the thermostat, again, I've found many bad ones,
#especially from Pep Boys. Make sure the radiator caps is holding at
#least fifteen pounds to prevent the bottom hose from collapsing via a
#clogged radiator.
# God Bless America, Bill O|||||||O
#mailto:-------------------- http://www.----------.com/
#

Bill,

The OP could also toss the thermostat into a pot of boiling water
to see if it opens fully.

/herb

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <4584B494.BF5AED87@cox.net>,
L.W.(Bill) ------ III <----------@cox.net> wrote:
#Hi James,
# I would replace the thermostat, again, I've found many bad ones,
#especially from Pep Boys. Make sure the radiator caps is holding at
#least fifteen pounds to prevent the bottom hose from collapsing via a
#clogged radiator.
# God Bless America, Bill O|||||||O
#mailto:-------------------- http://www.----------.com/
#

Bill,

The OP could also toss the thermostat into a pot of boiling water
to see if it opens fully.

/herb

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <4584B494.BF5AED87@cox.net>,
L.W.(Bill) ------ III <----------@cox.net> wrote:
#Hi James,
# I would replace the thermostat, again, I've found many bad ones,
#especially from Pep Boys. Make sure the radiator caps is holding at
#least fifteen pounds to prevent the bottom hose from collapsing via a
#clogged radiator.
# God Bless America, Bill O|||||||O
#mailto:-------------------- http://www.----------.com/
#

Bill,

The OP could also toss the thermostat into a pot of boiling water
to see if it opens fully.

/herb

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <vsiao2dbv91ha5f96pstehkidvpga7to79@4ax.com>,
SnoMan <admin@snoman.com> wrote:
#A clutch fan is centrifical and bimetal thermostat controlled. It
#engages when the bimetal control lets fluid into clutch disc area
#faster than centrifical force can remove it. This is why it can
#sometimes cool better at low speed because the centrifical forces are
#not purging fluid from it faster than it is being replaced. Also at
#low speeds the engine is making less power on average and needs less
#cooling generally. When you put a big V8 in a small car the cooling
#system has to be just right for it to keep its cool. I would consider
#a electric fan as a last resort because it cannot come close to
#matching the air flow capabilies of a engine driven clutch fan. To do
#so would require more electric power than you vehicle can produce to
#sustain it.

The WJ's v8 has a electricly driven fan in addition to the mechanically
driven fan.

/herb

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <vsiao2dbv91ha5f96pstehkidvpga7to79@4ax.com>,
SnoMan <admin@snoman.com> wrote:
#A clutch fan is centrifical and bimetal thermostat controlled. It
#engages when the bimetal control lets fluid into clutch disc area
#faster than centrifical force can remove it. This is why it can
#sometimes cool better at low speed because the centrifical forces are
#not purging fluid from it faster than it is being replaced. Also at
#low speeds the engine is making less power on average and needs less
#cooling generally. When you put a big V8 in a small car the cooling
#system has to be just right for it to keep its cool. I would consider
#a electric fan as a last resort because it cannot come close to
#matching the air flow capabilies of a engine driven clutch fan. To do
#so would require more electric power than you vehicle can produce to
#sustain it.

The WJ's v8 has a electricly driven fan in addition to the mechanically
driven fan.

/herb

Re: 2000 JGC V-8 overheating/ occasionally only !!
 

In article <vsiao2dbv91ha5f96pstehkidvpga7to79@4ax.com>,
SnoMan <admin@snoman.com> wrote:
#A clutch fan is centrifical and bimetal thermostat controlled. It
#engages when the bimetal control lets fluid into clutch disc area
#faster than centrifical force can remove it. This is why it can
#sometimes cool better at low speed because the centrifical forces are
#not purging fluid from it faster than it is being replaced. Also at
#low speeds the engine is making less power on average and needs less
#cooling generally. When you put a big V8 in a small car the cooling
#system has to be just right for it to keep its cool. I would consider
#a electric fan as a last resort because it cannot come close to
#matching the air flow capabilies of a engine driven clutch fan. To do
#so would require more electric power than you vehicle can produce to
#sustain it.

The WJ's v8 has a electricly driven fan in addition to the mechanically
driven fan.

/herb

Re: Re: 2000 JGC V-8 overheating/ occasionally only !!
 

On Tue, 19 Dec 2006 04:40:33 -0600, herb@urusei.net (Herb Leong)
wrote:

>The WJ's v8 has a electricly driven fan in addition to the mechanically
>driven fan.


I know that but the electrical one has no where near the cooling
capacity of the engine driven one. For it to do so it would require
more electrical power than the cars system can produce and sustain
-----------------
TheSnoMan.com

Re: Re: 2000 JGC V-8 overheating/ occasionally only !!
 

On Tue, 19 Dec 2006 04:40:33 -0600, herb@urusei.net (Herb Leong)
wrote:

>The WJ's v8 has a electricly driven fan in addition to the mechanically
>driven fan.


I know that but the electrical one has no where near the cooling
capacity of the engine driven one. For it to do so it would require
more electrical power than the cars system can produce and sustain
-----------------
TheSnoMan.com