Earlier the truck was running fine, after a 30 minute drive I was slowing down at a railroad crossing and felt a strange vibration in the brake pedal. Drove another mile then shut the truck off. 3 hours later I left, and felt that strange vibration in the pedal again.

When I hit the interstate the truck was making a really weird noise, like something up front was loose. By the time I got home it was horrible!

At the light at idle: Horrible noise and vibration throughout the front of the truck.

Gaining speed the noise goes away completely until a shift point then makes a racket which lessens as I accelerate. At highway speed there is little to no noise or vibration.

Gauges read fine, all normal. There weren't any leaks in the driveway when I stopped (still none). I checked the belts they looked ok, fan looks good blades are intact. WTH???

Thanks in advance guys.
Jim

 

Did you upgrade the flexplate when you did your tranny? If so the bolts might have backed off. If not it may be cracked. Did you check your power steering pump for fluid. It takes Dex 4 like the tranny does. Pull the inspection plate and take a look at the flexplate.

 

Thanks so much guys....I took off the inspection cover on the bell housing to check if there was any movement of the flex plate, since there have been some bolts that have worked themselves out in the past (other trucks). It was fine. So I took off the intake and dammit if the turbo blades aren't chipped....I couldn't tell if there was any play that was not normal, and the intake was on snugly..What are the secondary damages that can occur when that happens? I can only imagine.
Jim

 

Does anyone know if this is covered under cummins' warranty?

 

Yes, it should be if the dealer will overlook your AEM intake. Worst thing I have heard is debris getting logged into the oil pump and having to be taken apart and cleaned.