mackncheese Posted November 11, 2015 Share Posted November 11, 2015 I have a new to me 05 Mack Granite with a 460 E7, 18 sp eaton, with camelback rears and I have a vibration that comes on around 40 mph and gets a little better at 65 or so. Has the big floaters on the front. Any ideas of where to start? Thanks for your time. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/ Share on other sites More sharing options...
j hancock Posted November 11, 2015 Share Posted November 11, 2015 Did it just start? Gradually getting worse? Tires look ok?Bent wheel, bad center bearing, bad driveshaft u joints. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-310868 Share on other sites More sharing options...
mackncheese Posted November 12, 2015 Author Share Posted November 12, 2015 The truck is new to me. I bought it this way. The tires on the front are new, but the truck has sat for awhile. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-310981 Share on other sites More sharing options...
41chevy Posted November 12, 2015 Share Posted November 12, 2015 Feel it in the steering wheel or just through the entire truck? Paul 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-310983 Share on other sites More sharing options...
220cummins Posted November 12, 2015 Share Posted November 12, 2015 Check your tires for balance. Check the entire driveline. Check all the suspensions and components. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-310984 Share on other sites More sharing options...
theakerstwo Posted November 12, 2015 Share Posted November 12, 2015 If its air ride get the ride height set to specs and not by what looks good. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-310988 Share on other sites More sharing options...
mackncheese Posted November 13, 2015 Author Share Posted November 13, 2015 Thanks for the help. Don't feel it in the steering wheel. Truck is not air ride. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-311148 Share on other sites More sharing options...
41chevy Posted November 13, 2015 Share Posted November 13, 2015 Drive shafts, u joints and carrier bearings and if all the rear tires are close to the same in height/ diameter and go from there. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-311150 Share on other sites More sharing options...
mackncheese Posted November 17, 2015 Author Share Posted November 17, 2015 Thanks to all who replied. It ended up being the cheap (LaMarche???) new tires were out of round. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-311872 Share on other sites More sharing options...
j hancock Posted November 17, 2015 Share Posted November 17, 2015 Probably Long March tires from China. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-311882 Share on other sites More sharing options...
Mcrafty1 Posted November 18, 2015 Share Posted November 18, 2015 Thanks to all who replied. It ended up being the cheap (LaMarche???) new tires were out of round.Glad you solved this problem, and thanks for posting the outcome. Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-311952 Share on other sites More sharing options...
ekennedy21 Posted November 18, 2015 Share Posted November 18, 2015 if it sat, the tires could have had flat spots Quote Link to comment https://www.bigmacktrucks.com/topic/42599-vibration-starts-at-around-40-mph/#findComment-312009 Share on other sites More sharing options...
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