[braves2]

1st Issue. When I get on the gas, just barely to full acceleration, everything fine. When I let off the gas, before touching the brakes, coasting, there is a shimmy (vibration) from the front end until I come to complete stop? Tires? Mechanical?

2nd Issue. When the engine is cold, as I accelerate, usually lightly, sounds like a exhaust manifold leak or a slight fluttering sound on the pasenger side dash/engine area. Once it warms up, may take a few miles, it goes away.

Any suggestions?

 

[JoeB]

I have the same problem with noise at about 17,000 rpm when the engine is cold. Sounds like a rattle or vibration. What is it?

 

[NissanPowerBaby!!!]

1st Issue. When I get on the gas, just barely to full acceleration, everything fine. When I let off the gas, before touching the brakes, coasting, there is a shimmy (vibration) from the front end until I come to complete stop? Tires? Mechanical?

2nd Issue. When the engine is cold, as I accelerate, usually lightly, sounds like a exhaust manifold leak or a slight fluttering sound on the pasenger side dash/engine area. Once it warms up, may take a few miles, it goes away.

Any suggestions?

For #1 if it were tires it would do it all the time, regardless of load on the drivetrain, which makes me thinks it mechanical. Try to recreate the vibration in 4wd next time.

Is #2 a metallic sound?

 

[braves2]

For #1 if it were tires it would do it all the time, regardless of load on the drivetrain, which makes me thinks it mechanical. Try to recreate the vibration in 4wd next time.

Is #2 a metallic sound?

Response to first question, its 2wd.

2nd question. It sounds exactly like a light exhaust leak. Not mechanical.

 

[Scott Hutch]

I have the same problem with noise at about 17,000 rpm when the engine is cold. Sounds like a rattle or vibration. What is it?

I wish mine wold rev to 17k! lol couldnt resist

But yea for the rattle i switched to a lighter weight oil like alot of guys on here to avoid the rattling valve noise on cold starts

 

[q-ball]

1st prob...check your u-joints for play and replace if there is any

2nd prob...sounds like a heat shield rattling or an exhaust leak...check right after the y-pipe i know i have a small leak there. you will prolly see a small line where carbon is being blown out of the hole