I have a 1999 Chevrolet Camaro with a new radiator and no thermostat sometimes it pumps water sometimes it don't I don't understand why its heating there is no water in the oil.

David Sorrells

Asked by Oct 01, 2015 at 03:01 AM about the 1999 Chevrolet Camaro Base

Question type: General

Sometimes it pumps water
sometimes it Dump there's no water
coming from the repo or anywhere
else but it it overheats

4 Answers

Jason Zane

is the air dam still below the radiator ?? that scoop can get wrecked after many chassis scraps with the concrete blocks. also be sure u bled out all the air from the top hose bleeder valve.

1 out of 1 people think this is helpful.

Could be a bad water pump,either the vanes are corroded or the seals are leaking air into the system but not bad enough to leak coolant. These engines need a thermostat, otherwise they will overheat due to the fact that the coolant is moving too fast through the radiator that proper heat transfer cannot happen.


Agree with tennisshoes, also you need a 50/50 mix of antifreeze...Not just water.

Giulio Moro

Sounds like you may have a clogged rad, rust build-up in the water passages of the block, or a bad water pump. There is definitely air in the block, also causing rad fluid not to flow properly. A good block and rad flush are in order, as well as a new water pump.

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