Coolant boiling after car stop

Anyone know or have the same problem as my: Every time I stop my after
drive , I can see the coolant in expansion tank is boiling ! I checked the
level ; even it below the mark or same level as the mark . It still boiling
after the car park ! The coolant boiling and sometime even coming off from
the expansion tank ! Anyone know why it happen like that ? Quang

It helps to identify the vehicle, but a bad thermal radiator fan clutch is a
likely culprit. On some types of vehicle, it would be an electric radiator
fan that is the problem.

Earle

"quangcar" > wrote in message
lkaboutautos.com...
> Anyone know or have the same problem as my: Every time I stop my after
> drive , I can see the coolant in expansion tank is boiling ! I checked the
> level ; even it below the mark or same level as the mark . It still
boiling
> after the car park ! The coolant boiling and sometime even coming off from
> the expansion tank ! Anyone know why it happen like that ? Quang
>
>

Or a bad radiator cap. The boiling is because the superheated coolant is
flowing from the radiator to the expansion tank

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"Earle Horton" > wrote in message
...
> It helps to identify the vehicle, but a bad thermal radiator fan clutch is
> a
> likely culprit. On some types of vehicle, it would be an electric
> radiator
> fan that is the problem.
>
> Earle
>
> "quangcar" > wrote in message
> lkaboutautos.com...
>> Anyone know or have the same problem as my: Every time I stop my after
>> drive , I can see the coolant in expansion tank is boiling ! I checked
>> the
>> level ; even it below the mark or same level as the mark . It still
> boiling
>> after the car park ! The coolant boiling and sometime even coming off
>> from
>> the expansion tank ! Anyone know why it happen like that ? Quang
>>
>>
>
>

I am for the clutch, because he said "every time I stop". This would of
course be a good time to check out all the cooling system components.

Earle

"Billy Ray" > wrote in message
...
> Or a bad radiator cap. The boiling is because the superheated coolant is
> flowing from the radiator to the expansion tank
>
> --
> (remove SPAM)
> 2002 Jeep WJ 4 Liter Automatic
> Sharing is why we are all here....... or should be.
> .
> "Earle Horton" > wrote in message
> ...
> > It helps to identify the vehicle, but a bad thermal radiator fan clutch
is
> > a
> > likely culprit. On some types of vehicle, it would be an electric
> > radiator
> > fan that is the problem.
> >
> > Earle
> >
> > "quangcar" > wrote in message
> > lkaboutautos.com...
> >> Anyone know or have the same problem as my: Every time I stop my after
> >> drive , I can see the coolant in expansion tank is boiling ! I checked
> >> the
> >> level ; even it below the mark or same level as the mark . It still
> > boiling
> >> after the car park ! The coolant boiling and sometime even coming off
> >> from
> >> the expansion tank ! Anyone know why it happen like that ? Quang
> >>
> >>
> >
> >
>
>
>

Possibilty of too much water in the mix. Get an antifreeze tester at
the local autoparts store, and check your mixture. Also, how old
is the coolant?

Eric

On Wed, 02 Nov 2005 02:12:29 -0500, "quangcar"
> wrote:

>Anyone know or have the same problem as my: Every time I stop my after
>drive , I can see the coolant in expansion tank is boiling ! I checked the
>level ; even it below the mark or same level as the mark . It still boiling
>after the car park ! The coolant boiling and sometime even coming off from
>the expansion tank ! Anyone know why it happen like that ? Quang

Thanks for the tips. What is the thermal radiator fan clutch ? Where is it
location and what it does ? It is 1994 jeep grand cherokee !

Radiator cap have been changed new . The old one, for some reason it got a
litle cut on it so I got new one . Thanks!

It is bolted to the engine-driven fan, behind the radiator. Besides causing
problems like this, its main function is to delay fan operation until the
engine reaches operating temperature. Some (maybe a lot of) manual
dexterity is required to replace it. If you have an additional, electric,
radiator fan, the control circuitry for that may have problems too.

Earle

"quangcar" > wrote in message
lkaboutautos.com...
> Thanks for the tips. What is the thermal radiator fan clutch ? Where is it
> location and what it does ? It is 1994 jeep grand cherokee !
>
>

Radiator cap have been changed new . The old one, for some reason it got a
litle cut on it so I got new one . Thanks!

Do you still have the boil-over problem now that the radiator cap has been
replaced?


--
(remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Sharing is why we are all here....... or should be.
..
"quangcar" > wrote in message
lkaboutautos.com...
> Radiator cap have been changed new . The old one, for some reason it got a
> litle cut on it so I got new one . Thanks!
>