Maxima Forums - I'm hearing a low clunck under the car

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fate167

Dec 22, 2010 04:32 PM

I'm hearing a low clunck under the car

I've been hearing once in awhile I hear a low clunk when the car is in park has anyone experience this under passenger side.

TintNinja

Dec 23, 2010 08:47 AM

Not me...

alexdi

Dec 25, 2010 08:02 PM

I've never encountered that, but for anyone who finds this thread in the future, it is normal to have a clunk as you pass 20 MPH for the first time after starting up.

sg1214

Dec 25, 2010 10:45 PM

Quote:

Originally Posted by alexdi (Post 7864764)

I've never encountered that, but for anyone who finds this thread in the future, it is normal to have a clunk as you pass 20 MPH for the first time after starting up.

Yea I get that all the time, it never bothered me because I experienced that same exact thing in my dad's car.

Ghozt

Dec 25, 2010 10:55 PM

Quote:

Originally Posted by sg1214 (Post 7864866)

Yea I get that all the time, it never bothered me because I experienced that same exact thing in my dad's car.

How different is this klunk at 20 mph from the vibration reported in the TSB's as a fault with the transmission?

alexdi

Dec 26, 2010 07:47 AM

The transmission TSB is a response to the CVT's tendency to lug the engine at part-throttle. This induces a low-frequency resonance perceived as a booming sound. The TSB reprograms the CVT to hold higher engine speeds that won't cause the resonance. The 20 MPH clunk has something to do with automatic brake calibration; it's unrelated.

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