Also a clunk sound

RamRoy · Sep 14, 2017

My 09 Ram will make a clunk sound, but only once during driving. I usually hear it about 30 minutes after driving. It happens when I go to stop and then accelerate, as if a light changes. I don't accelerate hard and I can not repeat it, so the dealer is no help. It is not gas in the tank. Almost seems as a shift point is bad, except it only happens once per long drive. Again, only happens when braking, then accelerating. Never from a complete stop. It has done it for the past few years.

SYKRAMMAN · Sep 14, 2017

Sounds like an intermittent hard down shift, have the shift solenoid's checked out.

RamRoy · Sep 15, 2017

Thanks Sykramman

smiley · Sep 17, 2017

Do you have a 32 gallon fuel tank?

RamRoy · Sep 18, 2017

No sir

SYKRAMMAN · Sep 18, 2017

I was also going to say try and listen and feel what gear it does it in to narrow it down so you can just change the one that's bad. I personally would try to find a reputable local trans shop (not aamco though) and have them look at it. F**k the stealerships cause if there's no code then they won't do any manual diagnosis like a local shop does.

RamRoy · Sep 19, 2017

The thing is it always catches me by surprise. It may not be everyday, but if it is, only once. I can not make it do it. I have a lifetime powertrain warranty, so that brings some comfort

CunningStunt · Dec 12, 2017

Drive shaft U-joint maybe?

Also, check if your spare tire cable is loose.

I had a "surge" issue when stopping so I disabled the Hill Start Assist and that stopped, but I have a '14 8spd

Z mann R2 · Dec 14, 2017

u-joint

CunningStunt · Dec 14, 2017

RamRoy, try manually move the driveshaft and see if there is any play in the universal joint and let us know

BWL · Dec 14, 2017

Sounds like driveshaft u-joint to me as well. Easiest way to see is have the back tires off the ground and spin the rear tire and look for play in it. Hard to tell when it's on the ground. If you're brave have someone go from forward to reverse and back while you're under the truck watching them. As long as the brakes are applied you shouldn't get run over, but not the safest method.

Also a clunk sound

RamRoy

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RamRoy

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smiley

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Z mann R2

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