Yeah error means fukced the hell up! Un-hook the power to the unit from the back of the radio and cd changer (if seperate) then plug it back in after about 10 minutes, that should re-set the player.

 

i'll bet u my asianess that u have a a large vac leak like the techs said. get it taken cared of or ur car might even shut off when ur on the road. and ur car is not a piece of $hit. some of those problems happen can happen in any car

 

UPDATE : I replaced timing belt, v belt, ribbed belt, water pump, control arms, gas cap, alternator, spark plugs, battery, brake pads, discs, put in fuel injector, had fuel system cleaned, brake oil changed, fixed squeking steering wheel, changed cv boots i think thats all. After replacing battery I got error on radio no cd detected pluged unpluged cd changer then I got cd scratched error even though cd's good no problem bought new cd changer NOW steering wheel vibrates and RPM needle fulctuating just slightly when idle when driving fine but when step on brake drops to 1200 normaly then dives to 800 and comes back up fast to 900 o yeah its 1999 audi a4 1.8t 82Koh yeaah i forgot i also replaced cabin air filter and air filetr about 3 months ago also thermostat replaced at 72 k also forgot to say I notice that I am loosing antifreeze and I have to add it I lose about from max line to min line amount in about month. coulkd this be creating rpm problem i dont know much aout cars so help please

 

No that just means you have a big *** vaccum leak and a small coolant leak LOL.
Check the bottom of your expansion tank for dried up coolant.

 

Either a big vacuum leak, or the throttle body is dirty. If you check all the hoses and there are no leaks, and the connections are all tight, get some throttle body cleaner and an old toothbrush. Gently clean the throttle body, then do a throttle body adjustment. See if that helps.

Common leak sources are a crack at the bottom of the plastic expansion tank or the connectors at the oil cooler. See if there is dried pink crud at either of these places.

 

What kind of car is it? Can you smell coolant at all when the heat is on? If so you might have a leak at the coolant flange on the back of the engine (if you have a 1.8T) not sure where it's at on a 2.8.

Josh

 

Ok just remembered another thing when the car is in P and I turn the steering wheel either side the RPM jumps up and comes down is that normal.[sm=smiley25.gif]

 

Not really sure. I think it would be because you are using power to turn the wheel (power to drive the pump) so it might need to bring the RPMs up so it doesn't die. It's sort of the same thing as turning your AC on when your car is idling. The RPMs will jump around for a bit then settle back out.

And I see now that you have a 1.8T. Look in the back of your engine block (between the engine and the firewall) and see if you can see any coolant (pink stuff) crusted over down there. I had a bad leak there.

Josh

 

Clean your throttle body, it may help with the wierd idle fluctuation under braking.
It fixed it for mine anyway, mine was happening whenI would push the clucth in, it would drop lower than normal and then come back up.

 

I wonder if the coolant temp sensor could be bad? When mine went out I had a bunch of weird idle problems along with the car not starting easily.

Josh