| TEAM SHELBY FORUM |
Search the Community
Showing results for tags 'whine'.
Found 2 results
-
My 2013 has 840 miles on it, so we thought we would run it down to the local Dyno Days. I ran the car on a Mustang Brand Dyno and the two pulls were stunningly bad. FIrst pull was 480RWHP @ 6500RPM (Actually at 5200, then it ran flat to the end.), the second was 455RWHP @ 6000RPM (there was no change in HP from 5000RPM). My 2010 had numbers close to this! Has anyone had any experience with bringing Ford to the task of bringing the motor close to the advertised HP? I was seriously expecting around 540RWHP, am I wrong in expecting that? Also, the rear end whine in this car is deafening at Higher freeway speeds. At 40MPH, you can hear the whine and a higher pitched chirping. Any ideas? -
I purchased a 2013 GT500 new out of state and drove it 1600mi. home. Varied the rpm like the manual advised, drove under 4k RPM first 200mi. Never used LC once. (SVT PKG + TRACK PACK) Ok, history out of the way - I hadn't noticed before but I do now, the car sounds flawless when cold and all the way up to operating temps. Just "after" it gets up to temp it starts this funny whine/moan sound between 900-3500 rpm. Most noticeably during deceleration and sounds like it is definitely front of the car. "Rrreeeeeeeerrrrr" It goes with the RPM of the motor, in gear or out of gear makes no difference so not a transmission issue. The noise gets louder the hotter the motor gets. There is one interesting bit of info, it seems that the noise is much less once you are stopped or just about stopped. In other words you can take it out of gear and be rolling at say 8 mph and rev it a little and it'd loud, around 1mph or stopped and rev it and a 75% reduction in the noise. You can also park the car for 5 minutes just after driving for hours and it will go away then once heat gets back to whatever it is the sound returns. I have an audio clip that I may upload to youtube later. No noticeable power difference so just wondering, is this just how the 13's sound? If this is normal then great, i'll just accept that and move on but it just sounds wrong. Taken it in twice now, they replaced the usual suspects - two pulleys, and the alternator, zero change. Tech said that the SVT Hotline told them "Yeah some of the trinity motors just have that 'zipper' sound from 1-3k, it'll go away over time". Sorry but WTF does zipper sound mean? And after 2350mi it's still doing it. Anyone else experience this? Thanks in advance for any insight into this issue. I simply love this car to death and it sucks when something like this messes with the experience.
