[quote author=PegAir link=topic=47439.msg737491#msg737491 date=1148578230]
I've noticed two thing about starting my car.
(1) Occasioanly it doesn't fire right up. I release the key and it's dead and I have to do it again. It starts right up the second time. My previous car almost never did this. Could be me I suppose. I prefer the GM system. You flick the key and the car turns over till it starts. Ah well, can't have everything.
(2) Occasionally if left to sit for a few days it makes a growling sound in the first second after starting. Quite scary the first time I heard it. Does this most of the time, but not all the time after sitting. If/when I can reliably re-produce it I may take it in.
If your noise is a loud agressive growl it is probably the A/C compressor. I haven't heard a Fusion do it yet, but most of the other Ford's do and it is quite a scary noise the first time you hear it. Here's the message Ford put out on this problem (quite a while ago)
15697 NORMAL CONDITION: MOMENTARY GRUNTING SOUND
SOME VEHICLES WITH AIR CONDITIONING UTILIZING R-134A MAY EXHIBIT A MOMENTARY GRUNT/POP AFTER BEING PARKED FOR SOME TIME & THE COMPRESSOR IS ENGAGED BEFORE THE ENGINE COMPARTMENT HAS WARMED UP. THIS IS DUE TO LIQUID R134A BEING PUMPED OUT OF THE COMPRESSOR. R134A WILL TRAVEL TO THE COOLEST POINT (THE COMPRESSOR) ONCE THE ENGINE HAS COOLED, DUE TO THE DIFFERENCE IN TEMP BETWEEN THE ENGINE COMPARTMENT & THE VEHICLE INTERIOR. WHILE MANY VEHICLES HAVE PCM STRATEGIES THAT ADDRESS THIS BY REPEATEDLY CYCLING THE COMPRESSOR ON START- UP, THIS MAY NOT TOTALLY ELIMINATE IT. REPLACING A/C COMPONENTS WILL NOT ELIMINATE THIS. COMPONENT DURABILITY IS NOT AFFECTED. MINIMIZE THE NOISE BY TURNING THE A/C SYSTEM TO VENT BEFORE EXITING, & IN MILD AMBIENT TEMPS (APPROX. 50-75F) WAITING A FEW MINUTES BEFORE TURNING ON THE A/C OR DEFROST.