When I try to shift into 4x4 on the fly my front hubs make a horrible grinding noise. I brought it to ford and they said I needed new hubs. So I brought it to my mechanic (not the dealership) and got new hubs put in yet it made the same noise, so out went the new hubs. I brought it to a different mechanic (former ford mechanic) and after a bunch of testing it is showing a code problem (P1824 & P1824-2F) in the transfer case. Has anyone experienced this problem? If so what needed to be fixed, as I am assuming anything in the transfer case is going to be expensive. I did have the 4x4 shift motor replaced a couple years ago on a recall.

 

You have an IWE (integrated wheel end) problem. Sorry you wasted your money on new hubs. Your problem is simply vaccum related. Do a search on "everything you want to know about IWE. There is a ton of info on this forum. BTW, a really easy and inexpensive fix.

 

Is the IWE related to the transfer case? The mechanic ran tests on everything and he said that the vacuum was good, and the seals were good. Also what do the error codes mean?