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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Rattling noise

  • Thread starter Thread starter RoushMan3
  • Start date Start date Jun 7, 2010
R

RoushMan3

New Member
Jan 10, 2004
11
0
2
Jun 7, 2010
#1
  • Jun 7, 2010
  • #1
I've recently started hearing a rattling noise, here are the symptoms:

When I start the vehicle, it rattles as the RPM's increase then decrease upon start. Funny thing is that if I turn the car off and then back on, the rattling does not happen again. So it seems only to happen when the car has had a chance to sit for a while.

It also makes this rattling noise when I'm lightly on the throttle, it does not make it when I am completely off or completely on. It also does not make the noise when at idle so I've had a hard time trying to figure out where its coming from.

I have no cats.

It's a 2001 SOHC w/ about 85k


Any ideas?
__________________
 

RickieFrat

Founding Member
Aug 13, 2002
328
0
17
State of Corruption - Providence, R.I. , USA
Jun 7, 2010
#2
  • Jun 7, 2010
  • #2
Where is it coming from? under the hood - center of the car - the rear

I know every once in a while my AC clutch rattles and sounds the way you mentioned.
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Jun 7, 2010
#3
  • Jun 7, 2010
  • #3
Yeah, without knowing where the sound is coming from it's hard to guess.

If it's from the front of the engine you may be looking at timing chain guide/tensioner issues...
 

Maxpowers

Member
Sep 9, 2009
859
2
19
Pittsburgh, Pa
Jun 7, 2010
#4
  • Jun 7, 2010
  • #4
I'm assuming you mean metal on metal rattle and not something plastic inside the car.

Have someone looking under the hood while you start the car and see if they can pinpoint the location of it.
 
R

RoushMan3

New Member
Jan 10, 2004
11
0
2
Jun 7, 2010
#5
  • Jun 7, 2010
  • #5
Its coming from the engine bay. Had someone hold the RPM's while I tried to listen but I can't pinpoint where the noise is coming from, my best guess would be from towards the bottom of the engine.

It seems to make the noise in roughly the 2500-3500 RPM range
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Jun 7, 2010
#6
  • Jun 7, 2010
  • #6
Normally, I would vote for bad cats but since you do not have any..

Get yourself a mechanic's stethoscope and probe around.
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
95
134
Jun 8, 2010
#7
  • Jun 8, 2010
  • #7
Could be a million different things. Non-specific "rattle" noises cannot be diagnosed over teh interwebs. Good luck.
 
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