Question about 2002 Audi A4

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Audi a4 turbo chirps when car is started

Immediately after starting my car in the morning I hear 3-4 chirps coming from the rear right side of my car. The chirps sound similar to the sound when the car is locked and alarmed. Any ideas?

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  • Anonymous Dec 30, 2008

    2002 A4 I have the same chirp (3) from the trunk when the car is started. Please let me know if you know what this is coming from.

  • bksplaya May 10, 2009

    does a 02 audi a4 with a 3.0l engine have turbo? if not how much?

  • Anonymous May 26, 2009

    I have had the same problem. More than a chirp. Loud whining. I have been told that it is the fuel pump which is in the right rear section.

  • Anonymous Mar 24, 2014

    is the car belt ok

  • Anonymous Mar 28, 2014

    passenger side

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Could be the belt(s).

If not that, could be a loose hose coming from the turbo. If it build boost and the hose is loose, it'll chirp. At least, it would on my turbo bike. Sounded like a balloon releasing air when the neck is pinched.

Posted on Feb 10, 2009

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My Audi A4 2009 makes a rattling noise on cold starts which resolves in less than 30 seconds. Dealer says its an air pump. This doesn't seem correct. The noise comes from the front of the care. Does not...


READ THIS (happy ending so far...):
audi a4 2L turbo quattro, manual transmission with 98,000 KM. Perfect conditions, no oil leaks whatsoever.

Left the car off for two weeks in very cold weather (-10C down to -25C). When I restarted, it started immediately but with heavy rattling noise due to camshaft adjuster not getting enough oil pressure. After 3 minutes of warming up (outside temp.: -12C) at very low rpm (below 2,000rpm), I start moving the car. Still hearing heavy rattle noise. As soon as I pass 2,000 rpm, I get a scary red warning, low oil pressure. Turn off the engine immediately. In 1 minute, I re-start the car and the engine lights check ok, so I drive in first gear super slow (1,200rpm) hearing the same rattling noise. After another minute, finally the noise all the sudden disappears and the car starts running just fine.

Called Audi dealer and they told me that in extreme weather conditions, I should warm the engine for 10-15 minutes if necessary before start moving.
Take away: luckily, I didn't screw up the engine since I was using it at extremely low rpm (easy to do with clutch and manual transmission) until the oil reached full pressure. I am pretty sure now that the problem was leaving the car off for such a long time in freezing weather. All the oil flows back to the bottom, and when I restarted it, the cold oil with high viscosity took a long time to reach all the parts of the engine, specially the camshaft adjusters that are actuated by using oil pressure. Next day, the car started at -9C perfectly without making any noise (as usual). Basically, the longer you leave your audi in cold weather, the longer you might hear the rattling noise until the oil reach full pressure inside the engine. My car took 6 minutes to fix it after couple of weeks in cold weather. This makes sense to me; in fact, in the past I only heard the rattling noise after leaving the car off for a couple of days in the winter.
So far, this has had an happy ending....

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I have a 2001 audi a4..When I crank it up the turbo makes a awful screaming sound for 2 to 3 minutes then it stops.How can I fix it?


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Here's some info I found.
If it's when you lift off the gas, its the dv (diverter valve), it is normal. If you take the airbox cover and filter out you can hear it better. If it sounds like a splash or psshhh, its fine, if it sounds like a rapped goose, you have a blown/torn dv and it needs replacing.
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You can get the trouble codes scanned. Many auto parts stores will have a free loaner meter you can use. Try Advance Auto, AutoZone, VIP, CarQuest etc etc.

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