Car making Noise, need help

[OILERS]

i need some help, my car is making a screeching noise. this is the situation. when the day is roughly around -5 degC outside i warm up my car, once i start driving, when i press the gas, i start to hear a screeching noise for a bout 2 seconds. only when i press the gas from a stop. every time i stop, then when i hit the gas to go, i hear the noise for a few seconds.

now after driving for about 10 minutes or so, i won't hear it again.

another thing is when it was cold a week or 2 ago, like -15 to -20degC, when i started my car, let it warm up a few minutes. when i started to drive the noise lasted for a while, like a minute or so.

any suggestions what it might be, i was thinking maybe my tensioner.

i gotta get someone to press the gas for me as i listen with the hood open, but just looking for some info as well.

[Jordan]

Most likely a loose belt. When did you last replace your serpentine belt? They are auto tensioning in the M5x/S5x motors but you neglected to mention what motor your e36 has.

[OILERS]

see, i changed my serpentine belt not too long ago, like a week or two before i started hearing this.
and my car is a '94 325is.

[sloveniaboy]

apply some belt dressing and see if the sound persisits

[hioctane]

power steering??