In article <0ZQRj.2348$Cn4.580@[EMAIL PROTECTED]
>, Mike <mik@[EMAIL PROTECTED]
>
wrote:
>
><p5388@[EMAIL PROTECTED]
> wrote in message
>news:902be3f8-8396-4bdc-9539-e2cf36e3a701@[EMAIL PROTECTED]
>> My wife's everyday ride is a '96 Isuzu Rodeo, it has been giving me
>> fits for the past couple of years starting around this time of year.
>> On hotter days, the A/C will cut off when the temp gage reaches the
>> 3/4 mark. The engine temp never goes beyond this 3/4 mark, but this is
>> more noticeable on trips of a couple of hours or more. Especially
>> where cruising speed is around 70mph for a long period of time.
>> I would assume there is a cut out for the reason of dropping engine
>> operating temp as the condenser creates extra heat when the A/C is on.
>> I keep the maintenance up on this - oil change every 3K, timing belt
>> and valve adjust every 50K - It has 225K miles on it. The radiator
>> has been flushed, water pump replaced twice, thermostat replaced -
>> what else would raise operating temperature on "hot" days?
>> Thanks in advance..
>
> A partially plugged or restricted radiator. If it is the original
radiator I
>would think about replacing it if everything else checks out.
By flushed, do you mean it has had an acid flush or just a water flush?
I sort of recommend the acid flush... if the radiator or block is
partially
plugged, the acid flush will often open things up. The bad news is that
if
something is held together by corrosion, the acid flush will cause it to
come
apart and you will find all kinds of things leaking that you never had
leaking
before. But, I figure they are all things that probably need to be
replaced
anyway.
I agree that almost certainly you have a clogged radiator. The acid flush
may open it up, and it may also make it leak like mad. If the latter
happens,
well, you needed to replace it anyway.
Oh yes, also make sure your engine timing is right on. Almost certainly
this isn't the problem, but check it anyway.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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