Want this question answered?
Get a Bigger Radiator
Make sure water has not entered the oil it will be milky in color.did you bleed the system. I made two little hoes on the side of thermostat to remove air in system
I am not familiar with the Audi, but on most cars, the thermostat is at the point where the top hose leaves the engine to go to the radiator. A bad thermostat can make your car overheat. If it has not been changed since 1992 it should have been changed long ago.
usually it is a vacuumn problem right at the heater control switch or sometime under the hood
check the cabin filters inside the glove box, if theyre clogged that will cause low heat it happened to my wifes 2000 silhouette
If everything on your car ( thermostat, heater core, heat controls, water pump) has been changed and you are sure that it all works, check the water flow. A clog or an air bubble in the heat lines will cause coolant to not flow and have no heat output.
If it is leaking coolant. And you changed the thermostat. I would then move to this section. Flush the radiator and the heater core. This can be done at a certified shop with a reliable mechanic.
Check the temp sender and make sure the wiring is connected. How long has it been since the thermostat was changed and the coolant was flushed? You might try those...or at least a thermostat change. The coolant level is too low, and/or there is not enough water mixed with the coolant.
sounds like you need a good flush,of system.and change anti-freeze! check and make sure water pump is circulating coolant!! first.
If you have a heat pump it will be on the thermostat, if the thermostat for some reason has been changed to manually wire up emergency heat , remove the thermostat after you kill the power and connect the red wire too the green and white wire then turn the power on, you will have heat.
Cooling fan could be faulty or radiator could be clogged or have slight leaks in it .
check to see if the lower spoiler, the one that always hit the curb in the front when you pull up to close to a parking block they are cheep from a dealer and eeasy to replace, if gone car will run hot