Squeeking noise when i start the engine, with the engine cold

most likely your engines making a noise because of the oil gets thick when it gets cold. when it heats up it gets thinner. so when you start it cold its running roughly and that the noise you hear. its completely normal don't worry.

that noise is 1 of your belts. there is 3 belts on it. and with the power steering noise I think it is your power steering belt needs to replaced or agjusted

This could only be a couple of things, either you have a lash adjuster that is sticking, or a bad crankshaft bearing. I would recommend that you run a thinner weight oil, like a 10w30. I would recommend that you change your oil and substitute a quart of oil for a can of Seafoam. The Seafoam will clean your engine, and will not hurt the oil, or to run it until your next oil change. I would also recommend that you use a good oil filter, like a Fram extra guard that has a check valve in it which will not lose oil pressure overnight.

you most likely have a loose belt.only a mechanic can tell you which one. this is an issue that needs to be dealt with,or else you can be in a break down situation. the whistling is a belt slipping,then when it warms up,it quits right? you never hear it unless it's a first start up,or a cold engine start.as long as engines warm it will restart with no sound at all. please get an estimate at least 2 estimates,it should not be very expensive,less than$60.00 and thats high. thank you for choosing fixya.com

Sounds like thick oil in cold climate. Alot of synthetics do thisnbut shouldn't last 10 minutes. When was last oil change?

When is really cold, and vehicles with non electrical power steering start for the first time after a good period of inactivity the power steering pump tents to wine, that is normal, some other cars or almost all the cars when they pass 100.000 miles develop a little metallic noise that goes away when the oil pump distributes and lubricates all moving parts inside the engine when the car starts first thing in the morning in a really cold morning.

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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....

Every car needs a heating engine time specially when its cold, I recomend like about 5 to 10 minutes after you start engine and before you change from P to D. If you try to start the engine first time in the morning, it's cold outside and you immediately go on run you are going to have this trouble every time. Every engine has it's operational standard temperature a 5 to 10 minutes working engine, car stopped, may guaranty this standard temperature and optimal function conditions, and also keeps a longer life of your car.

Good luck

its proberly what they call a secondary air intake pump - what this does is increase the air flow only on cold start up - the colder it is the longer it stays on - if the noise gets louder and you will notice - get it changed - we have the same problem over here on the vauxhall omega and corsa's - bless em got to be GM

it sounds like it your belts are slipping check adjustments if it has any not sure on this car if the belts are tight you can buy spray from a auto shop to stop the noise hope it helps