I have had a very annoying problem for the past few weeks on my 02' aero 5 spd.
Some times when I start out in 1st gear and apply a moderate amount of torque (ie gas) I will get a creaking sound from the right front suspension area. The noise will continue as long as there is a moderate amount of power being applied and some times continue a bit into second gear as well. As soon as I take my foot of the gas it goes away.
What is interesting is that it only happens when the car is dirty, if I take it to the car wash and power wash off the undercarriage it goes away until the car gets dirty again. It also seems to be a little bit worse if I am making a slight right hand turn. The creak does not change with engine speed, vehicle speed or bumps.
I have checked the front end out, sway bar bushings, tie rod ends, ball joints,sub frame busings etc. as well as the motor mounts. All seems good. I have also taken it to a very good saab mechanic who works on these things all day long. Can't find it, anyone have this problem before?