Besides brake pulsation my daughter's 2000 Alero coupe with 3.4L engine
exhibited peculiar cooling system behavior yesterday following a long trip
from North Carolina. I noticed a small puddle of coolant under the machine
which she had not seen.
She mentioned that the low coolant level light had flashed on briefly just a
few miles from her destination, but the temperature gauge was normal and
there was no recurrence of the low level indication for the remainder of the
There was a steady drip of coolant on the ground, but it was impossible to
figure out where it had exited the system. Ran to Advance and got some
DexCool to fill it up. Took about half a gallon. Gave the daughter my
Aurora and drove the Alero home to investigate further today.
Lo and behold. There is no trace of a leak anywhere now. There is evidence
that the belt had been slinging coolant far and wide because the hood liner
is damp above the belt path and the fire wall pad in line with the belt is
Ran the machine at idle for a while. No leaks apparent. Used air pressure
to apply about 20 psig to the system. No leaks apparent, and the pressure
cap relieved at about 18-19 psig. Should have been 15 psig but gauge
accuracy is unknown. System held air pressure. Nothing dripping anywhere.
After the aforementioned brake investigation is complete my plans are to
take the machine out for a hard run in hopes of making the "leak" show
Do you have any ideas on what might have temporarily opened up on this