intermittant tapping noise

[A. Brown]

It's back, at lower rpms while moving I can hear tapping noise coming from the engine area and only at 1500 to 1800rpm. At a standstill I can rev the engine to any rpm and can't hear a thing wrong. I took it to the dealer and dragged the diesel tech out kicking and screaming for a test drive so I could prove to him there was indeed a strange noise. He agreed there was, but didn't have a clue what it might be. Truck spent the day at the dealer and the mystery noise is still that. I think it's in the pump but why can't I duplicate the noise unless the truck is moving? strange.

 

[DennyDay]

Check your transmission tower. Pull the boot and use a mechanics stethascope. I found mine was the gear shift rattling. But sounded like a valve tick!

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Denny
'99 2500 4X4 White short Q cab to much added to put here
On Order- Mom's Ram 2001 Qcab CTD with auto trans and all the bells and whistles

 

[Briar Hopper]

Piers, are you home minding your own business, and not in Virginia? #ad

 

[John]

Briar, when I saw the title to this thread I IMMEDIATELY thought of Piers too. #ad

 

[MidwestMotorman]

Before thinking it is the engine, jump or push the front bumper up and down so the front end cycles. Check the outer sway bar ends for a loose link. Mine had one loose on the driver's side. Drove me nuts as I was wondering what was going to break, until I had found the cause.

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99 2500 QC longbox, SLT, 4x4, 24V Cummins, 5 spd, 3. 55 LSD