Transmission "clunk"?

[stillflat4]

Just wondering if I have the same thing. I'll be on the highway in 6th gear going 70 and the RPMS are just shy of 3,000. If I give it some gas and get to 80 I am just over 3,000.

In that period, there is slight hesitation and I hear thump thump thump coming from the engine bay. .... sounds really odd. Is this what you are talking about?

Some of us have been mentioning this in a different Mazda forum. Seems to be a common problem. I and others notice it when coming out of a rest stop, going like 60, merging with traffic and hitting the gas to bring it up to 75-80mph. For me, it's more like a "clunk clunk clunk" coming from the engine bay, and when you look behind you, you'll see a cloud of grey smoke. It's something engine-management related and I hope Mazda figures out what it is and fixes it.

 

[chriscecc914]

for owners who hear the clunk when they start driving from being at a stop, Its either because you havent warmed up the car enough and the differentials are still really cold or you are taking off from too high of an rpm. Owners with the clunking while driving, sorry but thats a problem

 

[ms6tb]

There is a thread two links above this one titled "Click Click Click sound at 3000 RPM's" and is sounds like the same description as this problem.

My car does this to and I notice an instant power lose after the noise occurs. In the other thread above one guy said it happen to him and the dealership change the "purge valve" and it corrected the problem?

Sounds like the same problem in both threads, low rpm acceleration, click or clunk noise and lack of power?