Bleeding a4 (b6)cooling system?

If your flaps are opening and closing you may have a air pocket in the heater core, research bleeding cooling system.

Hi where do I find a water jacket on my audi a4 1.9tdi b6 2002

Fuel filter may be clogged, replace. Fuel pump may be failing, replace. Never let your vehicle "run out of gas" as all the residue collected in the bottom of the gas tank, will migrate through the system and create problems.

your caliers are locked on the rotor this is usually caused by air in the brake lines bleed the brakes starting from passenger rear driver rear passenger front then driver front bleed until you have a steady stream of fluid you can buy a one man bleeding kit from you r local auto parts store. i just took care of the same problem on my brother in laws mazda after same repairs!

No, Other than the frame of the car, and in some models the engine, most of the parts are different.

you dont have to bleed the water it automatically takes out the air when it runs and the thermostat valve opens check the level again after a run of 5 miles or when the temp is in the middle

remember not to check when the engine is hot

Alot of time you have to bleed the cooling system after changing a thermostat it gets an air pocket in it look for a bleeder valve near or on the thermastat housing if so bleed it to get the air out.check the radiator and make sure its full because if you filled it up after changing the thermastat once the thermastat opened after the engine ran awhile well the cooling system needs refilled.

Its located on the brake caliper and goes up to the brake line,To change just remove the high pressure fitting from both ends [very basic job]Fit the new pipe ,but now you have a new pipe but full of air!.To bleed out the new pipe just open the bleed screw [looks like a grease nipple on the top of the brake caliper]and connect a small piece of hose [must be a tight fit on the bleed screw]with the bleed screw loose and the hose fitted just fit the other end in to a container of brakefluid and press the brake slowly up and down till all the bubbles are gone{dont forget to top up your reservoir before you bleed it!!]as if the reservoir runs dry you will need a special bleeder to bleed the brakes [it requires 2 bar or 30 psi pressure to bleed out the system after the reservoir goes dry]

You didn't say what year the car is or what other diagnostics you've done lately...My guess is the radiator core is plugged...If you want to tackle it yourself, buy a Chiltons repair manual at AutoZone or NAPA stores ($25). I suspect you'll have to order the manual.
Good Luck

You probably have a leak in your oil cooler. This is causing the oil to bleed into your cooling system causing the "thick brown liquid". This in turn will also cause your engine to over-heat since the cooling system is contaminated.