Few problems, need some help

Got a prob guyz, need your expertise as I'm not real familiar with these trucks. Baught new 07 4dr, 4X4 TRD off road package, automatic, with 71K miles. Installed a 3" Revtek kit plus add a leaf in rear, 16X8 wheels on stock size Toyo A/T's.

Probz I have are:

Have a driveline vibration from approx. 55 to 69mph, fine over or under those speeds. Most of it goes away when it's kicked into 'N". Tried shimming the center support bearing from one shim to over 1.5" with no luck. Any ideas?

HVAC fan only blows on high. FOUND THE FIX

Overhead compass/therometer quit working. FOUND THE FIX

Any help would be greatly appreciated! Thanks guyz!

 

Bad U joint?
Did this happen after you raised it?

 

Some people have the driveline vibration after putting in the AAL. You might try the 3 degree axle shims from Toytec.

 

This is a good idea. The trick is first finding the cause of the vibration before you put parts in it. Saves money in the long run. I have heard of some driveline vibrations coming from diff angle, to driveshaft issues, carrier bearing issues, etc. Finding the problem is the hardest part.

The most interesting part is that your vibration is between 55-69 MPH, which happens to be the exact speed range that an out of balance tire will vibrate at, causing a similar problem.

 

My compass and temp readout stopped working also. What did you find to be the problem with yours?

 

Thanks wolfpack, As soon as I get an opportunity, I will investigate and report back, to let you know how it worked out. I'm hoping that's the problem.

 

Here seems to be a good video explaining how to fix the temp and compass issue.
(I hope the link is good)
http://www.youtube.com/watch?v=tYaqARpTQmc

 

PA-POW! The process worked like a charm. One of the 510's was loose and kicked up. I gently pressed it down, and added a small amount of solder. Plugged everything back in, and back in business! Thanks again, Tacoma World