concerned about new vibration
 

hey everyone

I have a vibration question (again it seems) I am not sure how well balanced these 4.7's are but mine has a knocking type vibration that is there most of the time it is like a hammer tapping that goes faster as I accelerate. It is there predominantly when in gear and the engine is under load. If I take it out of gear or depress the clutch while drivinghttp://images.intellitxt.com/ast/adTypes/icon1.png, the vibration diminishes greatly.

I have recently changed tires which helped some of my other issues and I changed the exhausthttp://images.intellitxt.com/ast/adTypes/icon1.png (which I checked and it is not hitting anything.

the other strange thing was today in the driveway, the front developed a kind of shimmy - it felt like it was going through the shakes. I did have it into Dodge in the fall to check the driveshafthttp://images.intellitxt.com/ast/adTypes/icon1.png and everything checked out ok.

This has me rather concerned as it is my only mode of transportationhttp://images.intellitxt.com/ast/adTypes/icon1.png

Any ideas thoughts or suggestions on what this could be would be greatly appreciated.

thanks

Sean

almost forgot - 2006 4.7 slt extended cab 2wd -

thanks

Got a wrist pin knocked out of it in the motor?

ok - I am going to sound stupid - can you explain what that is?

thanks

Make sure it is running on all 8 cyl

Connects the rod to the piston...

would I notice that whether it was in gear or in neutral? I also read somewhere that it could be loose or broken exhaust stud -?

thanks

Sean

Post up a good video.... Maybe we could get a better idea on whats up???

Make sure the flex plate bolts are tight

The 4.7L engine also has a problem with dropping valve seats and it causes a knock and miss-fire...Bill

two questions- is the flexplate in with the flywheel and clutch?

and can I check the valve seats from above or will i need to remove the head?

thanks everyone

Sean

No, flex plate is automatic, flywheel is stick.

thanks - that is what I thought - can I ask another stupid question? I just installed a new muffler and pipes - it is a little louder (Hooker aerochamber)

the more I listen the more the pounding sound is like a loud pulsing/hammer tapping type sound - could that be the way the exhaust is distributing the sound note?

I would have thought this more but I can feel the vibration in the stick which makes me wonder

thanks very much everyone

Sean