cmm47172
Member
- Joined
- Feb 18, 2012
- Posts
- 60
- Reaction score
- 1
- Ram Year
- 2008 Dodge Ram 1500 ST Regular Cab
- Engine
- 3.7 L V6
Thanks to anyone who responds to this!
I have a 2008 1500 w/3.7L V6.
I hear a noise that sounds somewhat metallic.
Likely a bearing noise.
The noise also reminds me of the sound of a field full of crickets at night.
I live out in the country.
Sometimes the noise can be heard at idle, sometimes not.
I can always hear it when I get near 2000 RPM.
I removed the serpentine belt and stared the engine.
I brought the engine up to 2000 RMP and could not hear the noise so I figure I'm on to something.
I could not test this way for long as the engine RPM started increasing on it own.
I tapped the gas pedal to get it to idle back down but it kept increasing.
What's up with that?
So fearing I would blow the engine, I shut it down.
However, like I said, the test time was very short and I didn't hear the noise so now I'm assuming it is a bad bearing on either the air conditioner compressor, alternator or maybe the power steering pump or idler pulley.
I replaced the tensioner pulley recently so I know that's not the noise maker.
With the belt off, I could spin all the pulleys and didn't see any play or dragging one would notice with a bad bearing.
With the belt back on the noise is back as before.
I tried listening around the engine with a stethoscope and still can't pin point the noise very frustrating.
The only point I could not get to with the stethoscope is the idler pully.
I was afraid to try to reach that because I didn't want to lose a hand in the fan blades.
That idler pulley could be the culprit. I think I will replace it since it's the least expensive item in the whole deal.
Anyone ever experience this and know how do find the trouble maker beyond what I have done already?
Any idea why the engine would accelerate on it's own with the belt off during test troubleshooting?
I have a 2008 1500 w/3.7L V6.
I hear a noise that sounds somewhat metallic.
Likely a bearing noise.
The noise also reminds me of the sound of a field full of crickets at night.
I live out in the country.
Sometimes the noise can be heard at idle, sometimes not.
I can always hear it when I get near 2000 RPM.
I removed the serpentine belt and stared the engine.
I brought the engine up to 2000 RMP and could not hear the noise so I figure I'm on to something.
I could not test this way for long as the engine RPM started increasing on it own.
I tapped the gas pedal to get it to idle back down but it kept increasing.
What's up with that?
So fearing I would blow the engine, I shut it down.
However, like I said, the test time was very short and I didn't hear the noise so now I'm assuming it is a bad bearing on either the air conditioner compressor, alternator or maybe the power steering pump or idler pulley.
I replaced the tensioner pulley recently so I know that's not the noise maker.
With the belt off, I could spin all the pulleys and didn't see any play or dragging one would notice with a bad bearing.
With the belt back on the noise is back as before.
I tried listening around the engine with a stethoscope and still can't pin point the noise very frustrating.
The only point I could not get to with the stethoscope is the idler pully.
I was afraid to try to reach that because I didn't want to lose a hand in the fan blades.
That idler pulley could be the culprit. I think I will replace it since it's the least expensive item in the whole deal.
Anyone ever experience this and know how do find the trouble maker beyond what I have done already?
Any idea why the engine would accelerate on it's own with the belt off during test troubleshooting?