"jim beam" > wrote in message
t...
> AZ Nomad wrote:
>> On Fri, 21 Jul 2006 20:14:15 -0700, jim beam
>> > wrote:
>>
>>
>>> Gary Kaucher wrote:
>>>> "jim beam" > wrote in message
>>>> t...
>>>>> Gary Kaucher wrote:
>>>>>> 1994 Honda Accord EX, 4 door
>>>>>> 4 cylinder, Automatic Transmission
>>>>>>
>>>>>> I just recently replaced the Radiator fan motor, and
>>>>>> now both my AC fan
>>>>>> and Radiator fan seem to be capable of turning on and
>>>>>> off. However,
>>>>>> I don't think that they are turning on soon enough.
>>>>>> With the recent hot
>>>>>> weather here in PA, if I idle the car with the AC
>>>>>> off, I've noticed that
>>>>>> the temperature gauge needle will rise to just under
>>>>>> the red zone (hot),
>>>>>> and then both fans (AC and Radiator) will come on,
>>>>>> cool things a
>>>>>> little, turn off and then cycle on and off as they
>>>>>> should, but at a
>>>>>> generally
>>>>>> higher temperature than I remember in the past. The
>>>>>> radiator cap is
>>>> rated at
>>>>>> 13 psi. Is this the correct rating for the above
>>>>>> vehicle? I am wondering
>>>> if
>>>>>> it
>>>>>> may have been accidentally replaced last summer.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Gary
>>>>>>
>>>>>>
>>>>> before worrying about the cap pressure, consider the
>>>>> following:
>>>>>
>>>>> when was the thermostat last replaced?
>>>>>
>>>>> in what condition is the radiator? is it
>>>>> clogged/sludged? filled with
>>>>> bugs?
>>>>>
>>>>> what level is the coolant? are you losing any? any
>>>>> bubbles in it?
>>>>> [check inside the radiator, not just look at the
>>>>> expansion bottle.]
>>>>
>>>> The thermostat was replaced last summer. When I looked
>>>> into the
>>>> radiator recently I did not see anything particulary
>>>> unsightly, but I
>>>> suspect that it may have been six years and 50K since
>>>> the antifreeze
>>>> has been changed.
>>
>>> hard to change the thermostat without changing the
>>> coolant.
>>
>> Only if you do the job with the car upside down.
>>
> ok, let's be pedantic because you know i'm like that.

I don't know what I'd call you, except it's not "pedantic."
Let's just be honest.

One does not have to change the coolant on all Hondas after
a thermostat change.

Have a gallon of coolant (OEM or whatever is used in the
car) on hand, because one certainly will lose some.


> the elevation of the thermostat relative to the engine
> block is about 2/3rds the height of the whole. and of
> that, the head carries a significant quantity of the
> coolant. for the engine, i therefore estimate you'll lose
> roughly 1/2 its fill of coolant. for the radiator, i
> estimate roughly 1/3rd. hoses, maybe another 1/3rd. that
> makes roughly 40% of the coolant changes with a
> thermostat. that's a higher percentage than you can
> change on the automatic transmission.

That's the ball park.