Question about 1999 Audi A6
Timing. The sound you hear when it falters is air coming out of the intake and that indicates the timing is off.
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Posted on Nov 20, 2014
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Posted on Jan 02, 2017
The SAI (secondary air pump) comes on for 30-45 seconds when you first start the engine if the coolant is under 85 deg F. It pumps air through the head into the exhaust. It's purpose is to supply extra oxygen to the cats to heat them up quicker and reduce emissions. It should have no real effect on engine performance, but does help bring engine temps up quicker making the engine more efficient.
Posted on Jul 08, 2008
the heater cores in these cars get clogged up very commonly. pull the heater hoses off of the heater core in the engine compartment, and use a regular garden hose to backflush the heatercore. spray in one way, then the other, untill clear water is coming out. then refill your coolant reservoir and see if that helps.
Posted on Dec 13, 2008
Enter the radio code, take your car to the dealership with proof of ownership and they can get it for you, you should have it from the previous owner or if you bought it new, to enter it, hold the pscan and rbds buttons for a few seconds, then numbers will show up, press the corresponding buttons to change the numbers, when you have your code in, hold pscan and rbds buttons for a few seconds. when you release the radio should unlock, good luck
Posted on Jan 06, 2009
Not likely the ABS pump there is something wrong with the mechanical brakes it sounds like the emergency brake is not adjusted try adjusting the rear cable first then pull the emergency brake and push your foot on the brake if it is still to the floor you have a problem with a cylinder or a mechanical adjustment, if it's higher with the E brake on then you have the adjusters not set right and the cables not adjusted, So adjust the cables first. If the brakes are spongy with the engine off then it will need to be power bleed if that does not fix it then you may have the wrong brake shoes or pads on the car. Did you install the plates in the wheel rotor front braes? If not you lose 1/4 inch travel on the from pads, if the basic brakes are not right the ABS side is not going to be right so those problems have to be dealt with first. Also DO YOU HAVE A POWER ASSIST BOOSTER IF SO IT COULD BE BAD, TO TEST HAVE SOMEONE STEP ON THE BRAKE PEDAL AND PULL THE HOSE OFF THE BRAKE BOOSTER IT'S behind the master cylinder (sorry for the caps) if you don't here a suction sound when you remove the hose then you have a bad heck valve by the booster connected to the hose that plugs into the booster. if all of this is ok then it may be the ABS booster but normally its a bleeding problem. write a comment if this does not help or you need another lead,
Posted on Jun 19, 2009
The thermostat is located in a housing, mounted on your engine with the top radiator hose attached. It is relatively easy to replace.
Be sure to put the new thermostat in the correct direction (notice direction of old one before taking it out). Also, be sure to clean the old gasket from the housing and be careful not to break the housing... many are cast aluminum and overtightening a bolt can easily create a headache. :o)
Hope this helps... Good luck!
Posted on Oct 16, 2009
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