[:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][>:][>:][>:][>:][][][&o][&o]my audi is piece of **** 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 82K[:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@][:@]

 

You wouldn't happen to hear a loud hissing type noise under the hood with the engine running would ya?

 

Did this all start after the timing belt was done? Who worked on the car?

Josh

 

no engine sounds fine and temperature is fine oil changed every 3 months regardless of miles synthetic 70$, nope changed timing belt a year ago at 72K battery 6 months ago spark plugs 6 months ago control arms and cv boots 3 months ago new cd changer 3 months ago

 

So is this correct-
1 - Radio error. It just says "error" right? That's because when you disconnect the battery, you need the radio code to unlock it. It might be in your owners manual or in the spare wheel well.
2 - Something with the idle.CEL on?

 

If the idle changes when you depress the brake it either has a vaccum leak going to the brake booster or the booster itself is bad. Does your brake pedal feel harder to push down?

 

everything seems same, i can live with it fluctuating and steering wheel vibrating its juust that last night i went to repark my car closer to the company where i work and it died while in D when I pressed brake I turned the key to off positin and turned it back on no problem starting, but rpm jumping like said above it pissed me off i was mad whole night i think i scared some people at my job. o and radio is not asking for code station is working fine but cd error that appeared on radio screen the book said scratched cd but they are not.

 

You have to pull the fault codes, i would bet my pay check you have a large vaccum leak somewhere.

 

oh yeaah i forgot i also replaced cabin air filter and air filetr about 3 months ago , ok i will look at that but in the mean time any other suggestions might come in handy.

 

When the radio is in safe mode, it says SAFE on the screen. Error means something else.