cross6
Well-Known Member
- Joined
- February 26, 2008
- Messages
- 268
- Reaction score
- 1
- City, State
- Baton Rouge, LA
- Year, Model & Trim Level
- 2004 Mountaineer
https://soundcloud.com/humidbeing/my-recording-1
Trying to figure out if this is chain rattle or not.
2004 2WD 4.0 with 187k.
ONLY does this at idle when cold. If you raise rpm above idle it's silent. If it warms up it's silent. But turning on the AC will make the noise worsen hot or cold. Does not rattle/flair on startup.
Ran engine without belt and still did it when cold under 700 rpm.
Don't hear anything from compressor or engine when probing with stethoscope.
What do you think?
Shouldn't it rattle under load, too?
Will bad tensioners cause rattle at idle? I thought it was just startup?
Trying to figure out if this is chain rattle or not.
2004 2WD 4.0 with 187k.
ONLY does this at idle when cold. If you raise rpm above idle it's silent. If it warms up it's silent. But turning on the AC will make the noise worsen hot or cold. Does not rattle/flair on startup.
Ran engine without belt and still did it when cold under 700 rpm.
Don't hear anything from compressor or engine when probing with stethoscope.
What do you think?
Shouldn't it rattle under load, too?
Will bad tensioners cause rattle at idle? I thought it was just startup?