First my truck starts crapping out on the freeway, now my car wants to
overheat. This has NOT been a good week.
Okay, the GTA. 1990 Trans Am GTA, 305/700R4, TPI. I got home the other day
and noticed that the temp gauge was at around 40C. Hmm... How odd... Parked
it in the driveway and heard an unusual bubbling. I popped the hood to find
the overflow reservoir about 80% full and BOILING. Great, just great. Must
be that cheapie rad cap I recently stuck on there. So, I went to Napa and
bought a new rad cap and gave it a shot tonight. Coolant level looked fine;
the rad was full and the overflow was just below the "full cold" mark. I let
her idle for a good fifteen minutes until the upper rad hose was too hot to
hold for more than a second and the temp gauge read just barely over 40C,
and the level of the overflow was a good inch over the "full hot" mark.
Soooo....... Any ideas? The thermostat housing gasket looks to be seeping
ever so slightly. Not enough to cause a drip or a puddle, but enough to be
damp. Pressure leak? Wouldn't it have to leak like a sieve? No drips on the
floor, all hoses look dry, the rad, water pump, and heater core are around
four years and maybe 6k kms old (The ol girl doesn't get out much), and the
thermostat is around two years old. I did notice that the tranny fluid
doesn't look very healthy, awfully clear on the dipstick (orangey-red on the
skin) and kinda funny smelling. Could just be old, the shop that did it last
turned out to be a bunch of clowns (long story). The coolant level was low
in the spring, which is why the new cheapie cap went on (It solved a similar
losing-coolant issue last time).
And to top it all off I'm stuck going into work on Saturday. Great...