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There is a TSB for this now--TSB 01-035/10. The dealer will flash the ECU.

LOL, I think that would have impaled him. At least he wouldn't have been able to get away!

BTW the CX9 is a 2009, but I think the front bumper assembly is the same for 2007, 2008, and 2009. Thanks again

It was hit and run--the guy didn't leave any insurance info. If I make a claim it will go on my collision coverage (like I ran into something). My insurance rates would likely go up, and over time would cost me more than the $1200-deductable. BTW thanks Ceric--I PMed you.

I need to replace the front bumper cover on my CX-9 due to a hit and run in the parking lot. Dealership wants $1200. Not too bad, but I think I can probably do it for half if I do it myself (using an prepainted part from an online body shop). Peeking through the broken plastic (trailer...

gte331r: Do you have a case number from Mazda that I can reference? It would help me plead my case. Thanks

Another update Apparently Mazda knows about detonation issues with CX-9s. They are working on an engine controller update for it. Ron Tonkin is going to let me know when it is available. It certainly would be nice if the fix is just an easy simple flash for the ECU. For now I am putting the...

An update: After hearing my recording, the parts and service director at Ron Tonkin and I took a (long) drive over to Happy Valley (thanks for that BTW) to try the grades there where my even-warmed-up CX9 knocked convincingly lugging uphill @ 30 MPH in 4th. Thinking maybe a simple rattle, Ron...

I taped my Windows Mobile cell phone on top of the battery and hit record on the voice recorder program. Since the engine was cold I didn't worry about heat and the phone. Here in the Cascade Mountains just about everything is on a hill. But for my issue you don't have floor it rocketing up...

benben01: your description sounds like the same issue I have. I'm taking our much loved CX9 to the service department at Ron Tonkin Mazda in Portland, OR on Wednesday to see what can be done about it. If anybody has had this problem and has had a dealer resolve it, please let me know the...

I made a recording of driving up the incline this morning by putting my cell phone in the engine compartment above the battery. This was with the engine cold, but it happens warm too, just not as much. Any ideas appreciated Thanks

gte331r: I have a 2009 CX9 Sport AWD with 8,000 miles. Just recently it has developed the same sort of knocking problem you describe. Every morning I take my son to school which means driving a long gradual grade at 35 MPH. As soon as the RPMs settle down and the car begins to cruise pulling...