High pitched engine noise whine
I have a 2008 v6 auto prem coupe pony package I've had ever since it had single digit mileage, bought back in April 2008. I've always noticed that I hear a high pitched noise only while going 60-65mph on the highway. Basically the noise starts at exactly 60mph and exits at 65mph, if you let off the gas it goes away and if you say go up to 65 mph the noise is gone as well as below 60mph but once you drop speed from 65 down between 60-65mph and then accelerate the noise comes back. So as long as you step on the gas sometime during 60-65mph u hear the noise and it goes away once you hit 65mph. My guess was this is normal for the 4.0l engine just not sure. I hear a low tone hit around 40-45ish but thats when it changes gear it sounds nice, just the high pitch makes u not wanna go 60-65 and go 55 or 70 on the highway constantly lol.