Hi:
The temperature fluctuating from 300 to 260 degrees is more than likely
the
thermostat.
Alternatively, if your heater core isn't plugged. You have combustion
leaking from a head gasket or a cracked head, leaking into the cooling
system.
Causing a cool air bubble in the heater core.
The water pump, is most likely leaking from the lower weep hole. The hole
is
there so when the carbon seal deteriorates, the coolant leaks through the
hole, rather than pissing through the bearing.
I hope this helps.
RK
"StarMan" <NOSPAM@[EMAIL PROTECTED]
> wrote in message
news:0z%Qi.4168$E7.3896@[EMAIL PROTECTED]
> My Z28 has a bit of a leak in the coolant system.
>
> However before this particular leak began, I've had problems with my
heat.
> Namely, I don't HAVE much. Being from a warm climate, I haven't worried
> much about that alone.
>
> Now, however, I find my temp will suddenly skyrocket to 260, but then
fall
> to 200 suddenly.
>
> When I replaced my belt, I saw what looked like a "wet" water pump down
> below.
>
> I have yet to get under to see just where the current leak is.
>
>
> Anyway - any ideas if this sound s like just a HOSE? Or is my water
pump
> suspect? I wonder about the pump, since the temp shoots up then in a
few
> seconds goes down 50 deg or more. Maybe a pump failing? Also there's
the
> lack of HEAT inside the car.
>
> I know I need to replace a hose, since when I put in water to the
> radiator,
> it poured out once I filled it. The question is - is there enough
> evidence
> to go ahead and replace the water pump?
>
>
|
