High Speed Slight Vibration Starting

[USMC_TOP]

Just lately at about 70+ I am feeling a slight vibration toward the front. Not 10,000 miles ago I changed everything on my front end including wheel bearings and half shafts. Tires are good, truck still drives perfect below 70. Fluids are perfect maybe 1500 miles on all. Front drive shaft seems tight but looks like crap. Rusty as hell. Will that cv joint near the t case do this? Is there a way to check it without pulling it? After working 2 jobs a day I am lazy and don't feel like pulling it out if I don't have to........


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[Ghostbuster]

69 mph sounds good.

 

[Woodtick]

Make sure you don't have mud on the inside rim,or a weight fell off.

 

[amrg]

+1!

 

[chaos254]

I'd also agree with the wheel balance

 

[4speedfunk]

You can shine a flashlight (from the front U-joint rearward) toward the CV joint on that driveshaft. This will allow you to look directly into the little metal cup on the end of it. You should see nothing but black rubber. If you see any shiny steel balls, then the boot is ripped and the joint has gone dry. Also, look for grease all over the trans tunnel at the front of the t-case. I have seen several H3 front driveshafts with no rubber boot at all!

I tend to think the 70mph vibe is probably due to tires...and not the driveshaft.

 

[USMC_TOP]

Cool thank you gents !


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[Best4x4]

Yeah I'd say tires as well if the CV on the drive shaft looks good. My CV on my Alpha blew out (boot just died from the TX Heat & it spewed grease everywhere). Only reason I knew it went bad was the smell. It never caused a vibration or noise. Now if left alone long enough to run completely dry it should sound like a bunch of angry crickets lol.