Loud vibration noise When I start up car. Intermittent problem.

[guccijayda]

I have a 2003 Mercury Marauder and Ever since I bought the car completely stock it had a pretty loud vibration noise under the hood sometimes when I turn the key on the on position(Engine not on) and when the engine is on(seems more on the mornings and cold starts). Also when in idle it may come on and go away.
It hasn't ever really bothered me because it goes away within 20 seconds and doesn't seem to affect anything or light up cel's.

Iv'e searched all over the internet and never really got any answers. Some say maybe it's the ABS brain(I know thats not the correct term but its the module that has all those plastic/wire connections going to it).

Also I got it checked out at a mechanic and it's definitely not my radiotar fan going on and off. So thats off the checklist. He says sometimes it's the abs and not to worry.


In this marauder video IT HAS THIS EXACT SAME VIBRATING NOISE! Although mine seems not as loud lol. It comes on right before he turns on the ignition.
http://www.youtube.com/watch?v=CkGWy7wl1oo&feature=PlayList&p=AEE130DC768CB622&playnext=1&playnext_from=PL&index=14
Any input? Thanks in advance:banana:

[BAD MERC]

Take the serpentine belt off and start it cold and see if the noise is gone. That will indicate a driven accessory with a mechanical issue. That is a cheap and free diagnosis. Could be a harmonic balancer, maybe the suspension pump. Do you have to start it to get the noise or just turn the key on?

[guccijayda]

Take the serpentine belt off and start it cold and see if the noise is gone. That will indicate a driven accessory with a mechanical issue. That is a cheap and free diagnosis. Could be a harmonic balancer, maybe the suspension pump. Do you have to start it to get the noise or just turn the key on?


all i need is to turn the key on, but if i just turn the engine on too it will still make the vibrating noise.

[Blackened300a]

all i need is to turn the key on, but if i just turn the engine on too it will still make the vibrating noise.

Thats the air compressor leveling the car. It is normal.

[jgc61sr2002]

Possibly the air suspension pump.

[guccijayda]

Thats the air compressor leveling the car. It is normal.

Really? If it's really not hurting my car I would feel as if 4,400 pounds of weight just left my body.

[Blackened300a]

Really? If it's really not hurting my car I would feel as if 4,400 pounds of weight just left my body.

It only raises the rear. Turn the key on after the car sits for a while and step out. Watch the rear, you'll see it rise when the noise starts.

[guccijayda]

It only raises the rear. Turn the key on after the car sits for a while and step out. Watch the rear, you'll see it rise when the noise starts.

but is the noise still supposed to come from under the hood? Thanks in advance for all the help.

[Blackened300a]

but is the noise still supposed to come from under the hood?

Yes, thats where the compressor is located. If you had something heavy in the trunk and removed it, you'll also hear the air vent out and the rear lower.

[guccijayda]

Yes, thats where the compressor is located. If you had something heavy in the trunk and removed it, you'll also hear the air vent out and the rear lower.


Thanks. That really was a load off my chest. I always had that little thought in my head "What if it really is bad..."

[Blackened300a]

Thanks. That really was a load off my chest. I always had that little thought in my head "What if it really is bad..."

Its not bad at all. If you didnt hear it then I would be wondering!
So much for your mechanic! :D

[guccijayda]

lol yup. Do all marauders have this loud vibration noise?

[Blackened300a]

lol yup. Do all marauders have this loud vibration noise?

Yes, all 03-04 Marauders have the rear air suspension.

[BAD MERC]

The compressor is under the airbox, direct your ear there and see if that's the source.

[guccijayda]

The compressor is under the airbox, direct your ear there and see if that's the source.

Thank you. Will do that

[Local Boy]

Check the mounts for the compressor...

It shouldn't be very loud...just a mild Hummmmmm...

ALOHA

[ImpalaSlayer]

The compressor is under the airbox, direct your ear there and see if that's the source.

hmm didnt know that. ill have to look

[offroadkarter]

Check the mounts for the compressor...

It shouldn't be very loud...just a mild Hummmmmm...

ALOHA


mine's pretty darn loud and its mounted fine. i can hear mine sometimes when the engine is in the low rpm's while driving

[guccijayda]

And why was I to think that I was the only one with this "Rare" problem? LOL, man wat ta do, wat ta do if I didn't have you guys:banana2:

[Odinson]

Hi

Since you missed this, you should know to open the trunk and flip the air shock switch off, before lifting the rear off the ground for any reason. Tell any mechanic that works on the car as they may miss it.

I'm not sure if they 'will' for sure, but the air shocks can get screwed up running with the rear axle off the ground or even just raised.

[bigbillybbs]

YUP it sounds like the air compressor. :lol:
Mine was very loud when it was on.
But when it burnt out and I got a new one installed the new one is much more quite. I can only hear it if my door is open and the stereo is completely off.

[guccijayda]

YUP it sounds like the air compressor. :lol:
Mine was very loud when it was on.
But when it burnt out and I got a new one installed the new one is much more quite. I can only hear it if my door is open and the stereo is completely off.


How much was the parts and labor for the fix?

[bigmerc2003]

all i need is to turn the key on, but if i just turn the engine on too it will still make the vibrating noise.


Thats the air compressor leveling the car. It is normal.


:rofl: The air ride compressor, now that was some funny stuff

[Black_Noise]

And why was I to think that I was the only one with this "Rare" problem? LOL, man wat ta do, wat ta do if I didn't have you guys:banana2:


Have you ever gone by the name "AJ"?

just checking

[guccijayda]

Have you ever gone by the name "AJ"?

just checking

I'm sorry No, why?

[bigbillybbs]

How much was the parts and labor for the fix?

I had it done at my local mechanic
The compressor Part was $304.13
The labor was $80.00

[guccijayda]

I had it done at my local mechanic
The compressor Part was $304.13
The labor was $80.00



not bad for such an annoyin sound lol

[bigbillybbs]

If I were you I would replace it when it goes. But if the sound really irritates you then swap it out. lol
Use that money for something funnnn.....lol

[magindat]

Hi

Since you missed this, you should know to open the trunk and flip the air shock switch off, before lifting the rear off the ground for any reason. Tell any mechanic that works on the car as they may miss it.

I'm not sure if they 'will' for sure, but the air shocks can get screwed up running with the rear axle off the ground or even just raised.

They are not air shocks, they are air springs. The regular rear shocks act as stops for the downward droop of the suspension. If you do not turn off the air suspension and key on while raised, the bags will drop all pressure. You would have to key on and wait for the car to raise back up when putting it back on the ground. If the key will not be on, turning off air suspension off is unnecessary, but not detrimental as a precaution.

[rayjay]

Thats the air compressor leveling the car. It is normal.

+1, Paul nailed it.

[CKMustangCobra]

LOL It is the air compressor. Normal.