2009 ACURA TSX Engine And Engine Coolingengine Problems

IN SEPTEMBER 2008, I PURCHASED A NEW 2009 ACURA TSX FROM AN AUTHORIZED ACURA DEALER IN PENNSYLVANIA. AFTER A FEW WEEKS OF DRIVING, I STARTED TO NOTICE A KNOCKING NOISE COMING FROM THE ENGINE. THE NOISE OCCURS CONSISTENTLY WHILE ACCELERATING (PARTICULARLY WHEN ACCELERATING BETWEEN 2000-3000 RPMS WHILE GOING UPHILL). PER THE DEALERS INSTRUCTIONS, I HAVE USED ONLY PREMIUM FUEL IN THE VEHICLE SINCE THE PURCHASE DATE. I HEARD THIS KNOCKING NOISE WHILE DRIVING THE CAR THROUGHOUT THE WINTER; HOWEVER, THE NOISE HAS BECOME PROGRESSIVELY LOUDER AS THE WEATHER HAS BECOME WARMER (THE NOISE IS MUCH LOUDER WHEN THE TEMPERATURE IS ABOVE 60 DEGREES). I TOOK THE CAR INTO THE DEALER (WHERE I PURCHASED THE CAR) TODAY (4/24/09). ONE OF THE TECHNICIANS RODE ALONG WITH ME, AND I WAS ABLE TO REPLICATE THE NOISE FOR HIM. THE TECHNICIAN ACKNOWLEDGED THE NOISE AND SAID THAT I SHOULDN'T WORRY ABOUT IT, THAT IT...

ENGINE PINGS EXCESSIVELY UNDER LOAD AT BETWEEN 2,000 - 2,500 RPM. I AM RUNNING PREMIUM FUEL (91 OCTANE) AS DICTATED BY THE OWNER'S MANUAL. THIS HAPPENS EVERY TIME I DRIVE THE CAR. *TR

2009 ACURA TSX WAS PURCHASED ON 12/13 /08 IN SAN ANTONIO, TX. DURING THE 1ST MONTH THE CAR DEVELOPED AN ENGINE/KNOCKING NOISE WHEN DRIVING AND ACCELERATING. THE CAR HAS BEEN TAKEN TO THE DEALER A TOTAL OF 3TIMES. PER THE DEALER, THIS ISSUE APPEARS TO BE OCCURRING ON MANY 2009 TSX MODELS. THE NOISE IS CONSISTENTLY PRODUCED WHILE DRIVING AND ACCELERATING, FURTHER PRONOUNCED WHILE RPMS ARE BETWEEN 2000 AND 2700, AND HAS BECOME MORE PREVALENT/LOUDER AS TIME GOES BY. AS INSTRUCTED, THE VEHICLE IS ONLY RUN ON PREMIUM FUEL. THE DEALER HAS BEEN ABLE TO REPLICATE THE NOISE, BUT IS UNABLE TO DETERMINE A FIX. I ALSO CALLED ACURA CLIENT SERVICES AND WAS TOLD THAT THERE WAS NO KNOWN ISSUE FOR THE 2009 TSX, WHICH I FIND HARD TO BELIEVE BEING SO MANY OWNERS HAVE THIS PROBLEM. HOWEVER, ACCORDING TO THE DEALER, MANY TSXS ARE EXPERIENCING THE SAME ISSUE AND...

THE ENGINE MAKES A PINGING, KNOCKING SOUND ABOUT 80% OF THE TIME WHEN ACCELERATING. I'VE COMPLAINED MANY MANY TIMES TO ACURA BUT THEY'RE REFUSES TO DO ANYTHING ABOUT; I DON'T KNOW WHAT THE LONG TERM RELIABILITY ISSUES ARE WITH THE VEHICLE BUT IT IS KNOWN THAT ENGINE PINGING IS DAMAGING TO THE ENGINE. *TR

2009 ACURA TSX WAS PURCHASED ON 12/29/08 IN PA. DURING THE 1ST 3 MONTHS OF PURCHASE, THE CAR HAS DEVELOPED AN ENGINE/KNOCKING NOISE WHEN DRIVING AND ACCELERATING. THE CAR HAS BEEN TAKEN TO THE DEALER A TOTAL OF 4 TIMES THUS FAR FOR INVESTIGATION. PER THE DEALER, THIS ISSUE APPEARS TO BE OCCURRING ON MANY 2009 TSX MODELS. . THE NOISE IS CONSISTENTLY PRODUCED WHILE DRIVING AND ACCELERATING, FURTHER PRONOUNCED WHILE RPMS ARE BETWEEN 2000 AND 2700, AND HAS BECOME MORE PREVALENT AS TIME GOES BY. AS INSTRUCTED, THE VEHICLE IS ONLY RUN ON PREMIUM FUEL. THE DEALER HAS BEEN ABLE TO REPLICATE THE NOISE, BUT IS UNABLE TO DETERMINE A FIX. ACCORDING TO THE TECHLINE, THE METALLIC KNOCKING/PINGING THE TSX MAKES WHILE DRIVING AND ACCELERATING IS ?NORMAL AT THIS TIME? AND THE ISSUE IS UNDER INVESTIGATION. I ALSO CALLED ACURA CLIENT SERVICES PER THE CASE NUMBER ABOVE AND WAS...