Vibration at 1600-2000

[Mike L.]

Mike, is there a bearing in the pump that could be going bad allowing the pump to wobble so to speak?

No bearing in the pump. I have had a ballancer go bad ( sheared pin ) and they shake pretty bad. Pat was at my shop and checked this truck out and he can tell you how bad it shook. I doubt this is a ballancer.

 

[RENODMAX]

did you check your exhaust as others have stated? mine was bumping the crossmember but it was damn near impossible to tell where it was coming from but it was extremely loud inside the cab

 

[MAXLLY]

just another thought... drivability issues suck!

I had a similiar vibration after i found the first few...:rofl:

Anyway i had another that started after it was warmed up. Turns out the exhaust grows with heat, alot. I found it by using cork 1/8 " gasket mat'l. I placed the gasket mat'l between what i thought could be pinch points drove it around for awhile and went back and checked all the gasket mat'l. Turns out as stuff expanded or grew with heat it was hitting something else!! In other words if the gasket mat'l is penetrated/pinched through, making a hole, you know its hitting by expansion. Process of elimination. If it doesn't wear through but shows flashing and the vibration stops? Thats you source.

Hope this helps hunt it down, look for the basic shit first then start looking for a polka dot Zebra.

Good luck Dude!

 

[scramHD]

What about the tuning. Fuel pressure....