air noise after engine shut off?

[jmsa540]

Guys, this happened twice today, after being parked on an incline and having a passenger with me both times. When I turned the car off, I heard what sounded like an air pump deflating/inflating.. It's coming from the left front side, I'm not throwing any codes at all.

Car rides great to be honest!

[8UWITH6]

That is horsepower leaking out. Better get it checked ;)

[jmsa540]

Nice, so I take it that it's the air compressor deflating? It sounds like an air pump or something, like when you go to the gas station to put air in your tires.. that loud humming noise..

[Blackened300a]

That's the air compressor venting because when you get out of the car, the weight is off and the car raises up, it will then vent down to ride height.

[Bluerauder]

That's normal operation for the air bags as they fill or vent depending on load and height of the rear end. When I start mine up, I can look in the mirror and watch it lift about 2 inches. When you shut it down and get out, it will bleed off pressure.

[RF Overlord]

^^^what they said^^^
It's coming from the left front side, The RAS compressor is located under the air filter box.

[fastblackmerc]

^^^what they said^^^The RAS compressor is located under the air filter box.

What they all said

[jmsa540]

What they all said


Thanks guys, sorry for all of the questions lately, I truly appreciate these cars and I'm still learning them; so when I heard the noise I became concerned.. I've never had a car with air suspension before.

[martyo]

How much do you weigh?

[jmsa540]

160 soaking wet.

[ncmm]

here's my post from 2004 about that noise. . .
http://www.mercurymarauder.net/forums/showthread.php?t=13791

[jmsa540]

thank you, I'll try to search better next time.

[ncmm]

it's cool. . .you're learning. enjoy your ride!