Overheating despite new parts

Thank you for the suggestions. I had a shop look at the electronics,
and the wiring to my cooling fan relay switch needed replaced. It had
corroded. The cooling fan now appears to work correctly, but the
corrosion seemed to be a side effect of the overheating (coolant fluid
getting everywhere) and not a cause.

Unfortunately the car still overheats in the same pattern. Last night
I looked under the hood while it was overheating and the coolant fan
was spinning away just as it is supposed to.

When I replaced coolant this morning, I left the cap off and started
the car to see if the level would drop when the thermostat kicked in.
As soon as the car started (it had been sitting in the driveway all
night), the coolant began to leak out of the open cap at a steady
trickle. I also noticed that when I step on the gas the level
immediately drops, but then immediately overflows again as soon as I
take my foot off the gas.

I think for some reason, my cooling system is not circulating when I
am not hitting the gas. This would explain why it only overheats at
redlights - even when the fan is working. I'm going to start looking
for a blockage, starting with the lower radiator hose as suggested
above. Thanks for the advice. I thought I'd keep y'all updated.

In article . com>,
"Garrett Gman" > wrote:

> I also noticed that when I step on the gas the level
> immediately drops, but then immediately overflows again as soon as I
> take my foot off the gas.

That's normal. If the top tank of your radiator has turned from black to
olive green, it's probably pretty well clogged and in need of
replacement.