Re: 99 civic EX - AC on and the heat gauge goes up
"loewent via CarKB.com" wrote:
>
> could these symptoms be indicative of a failed head gasket? It was replaced
> a few months ago when the timing belt snapped and we had to replace some
> valves.
>
> loewent wrote:
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It could be indicative that nobody told her to check / fill the
reservoir to MAX whenever there's been any work done on the cooling
system. It's in the owner's manual where they describe changing the
coolant..
She's been boiling off a bit more coolant each time she drove it since
the work was done, with nothing to replace it.
Head warpage / cracking is quite possible since a red hot head gets
quite a jolt when any coolant splashes around inside it.
Your water pump is supposed to 'weep' a bit too. That's (another reason)
why it's important for owners to check the coolant level in the
reservoir from time to time.
'Curly'
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