Audi heating/cooling system problems...

Asked by migration_moiseslask... Apr 17, 2016 at 07:18 PM about the 2002 Audi A4 1.8T quattro AWD

Question type: Maintenance & Repair

I have an Audi A4 Quattro turbo model
from 2002, and I've been having a lot of
problems with the heating/cooling system.
One problem I have is when I first turn on
my car, before it gets hot, the radiator fan
turns on instantly, and after a while it turns
off, then once it heats up again it turns on
again. It's been a draw from the deck,
every time I use the car i wonder if it's
gona over heat... There was a leak
because of a cracked dorman water outlet
I replaced it but it still seems like the
system isn't functioning like it should... The
heater only blows out room temp air and
the bottom radiator hose/pipe is cold even
after the top one gets hot should I replace
the water pump and thermostat or just one
or the other. I heard it could just be the
thermostat.

2 Answers
25

kildare answered 8 years ago

I recently did my thermo , I had just warm air and now its perfect. my temp gauge was staying down while driving and would only go to normal position when parked up for a period with engine running. my mechanic said if it was water pump the car would over heat. so the thermo fixed mine, hope this is some help.

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Deathjam4 answered 8 years ago

most likely is the thermo stat or water pump. I would not put across a bad 4 point connector on the side of the engine. usually has a sensor in it. often leaks there and throws the sensor off. but this sounds like a flow issue so i defantly have to say thermo or pump.

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