CJS F-1

i replaced both my IWE's and cv shafts. also the vac solenoid and the vac line that comes off the vac solenoid has been changed, it has a new check valve and my truck is makeing the correct vacume. so i dont no what else to do to fix my problem except replace all the vac lines from the solenoid to the iwe ends. even tho i vac tested these lines and they were fine. any suggestions or advise??

Nice Sweater

I'll give your my advice. . . wheel bearings going out. Is the noise coming from the left? Left wheel bearing. Is the noise coming from the right? Right wheel bearing. They suck to replace, sorry for the advice, it happen to me .

CJS F-1

its not the wheel bearings cause the noise goes away when i take off the vac check valve and cut the vac off from the 4x4 system. when i do this the noise is gone, and if it was a wheel bearing the noise would never go away until i stopped moveing. its still something with the 4x4 vac system has to be..!!

Nice Sweater

Weird. . . My noise was the "grinding" and it was coming from the front left. Only would make a noise when under "pressure", like going up a hill, or something like that. First guess was wheel bearing, took it in, and sure enough first stage of "wheel bearing gayness."

'08f150stx

Maybe too late to read;

http://www.ford-trucks.com/forums/83...then-some.html

Hope something in that article helps you trouble shoot it.