A Vexing Issue: The 72 mph mystery
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A Vexing Issue: The 72 mph mystery
Okay I have had the car for almost two years and it runs great and has had no issues until recently...
When cruising at exactly 72 mph I get a rather lagging vibration in the driveline... If i go to 71 mph and below or 73 mph and above it disappears. I have an auto and if I turn off O/D it reduces the vibration a bit but doesn't go away. Shifting into Neutral it goes away... Also I say it’s a lagging kind of vibration because it remind me of being in the wrong gear on a manual where you miss-shift down and instead of 2nd you get 4th gear... Any ideas?![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
Thanks in advance...
When cruising at exactly 72 mph I get a rather lagging vibration in the driveline... If i go to 71 mph and below or 73 mph and above it disappears. I have an auto and if I turn off O/D it reduces the vibration a bit but doesn't go away. Shifting into Neutral it goes away... Also I say it’s a lagging kind of vibration because it remind me of being in the wrong gear on a manual where you miss-shift down and instead of 2nd you get 4th gear... Any ideas?
![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
Thanks in advance...
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You know, come to think of it... in the hot sun after work, I'd leave, and there'd be a similar sounding (feeling?) vibration at 70. It'd go away after a little bit. I figured it was the tires being flat spotted a teeny bit from Awesome sitting about, poor thing, waiting for me to get done with work.
If I was moving about from the two stores and/or other places, it wouldn't do it. So it hadda be flat spotting from the sittin'... or am I teh dum?![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
In your case, 6500 miles on a 2009 that was obtained in September of 2008, which means 270 miles a month, or about 67 miles per week, or 9 miles a day. That's a lot of sitting around in one place, I'm thinkin'. That's a lot of potential flat spotting, provided my theory's right.
In any case, yeah, you shouldn't baby her so much. They're made to be driven.
If I was moving about from the two stores and/or other places, it wouldn't do it. So it hadda be flat spotting from the sittin'... or am I teh dum?
![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
In your case, 6500 miles on a 2009 that was obtained in September of 2008, which means 270 miles a month, or about 67 miles per week, or 9 miles a day. That's a lot of sitting around in one place, I'm thinkin'. That's a lot of potential flat spotting, provided my theory's right.
In any case, yeah, you shouldn't baby her so much. They're made to be driven.
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Last edited by houtex; 10/6/10 at 07:31 PM.
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Maybe i will try a few things to isolate the issue a bit more and yes I know I should be driving it more!
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