Grinding noise front end - 2004 FX4 SCREW - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

BTAAA · 02-16-2010, 11:18

I've been getting a phantom grinding noise in my front end lately. It's only happened about three times, about 2 or so weeks apart each time.

It seems to happen more while slowing down, or accelerating from a stop, which at first I thought was easily explained by my much needed brake job.
However, shortly into this I realized I could stop the grinding by activating my 4x4 high.

It almost sounds like my 4x4 is trying to kick in, but is only half engaging, causing the grinding. I'm not exactly sure on the 2004's how the 4x4 is engaged, but I'm assuming it's probably controlled by a solenoid.

Am I way off here? Thanks for any advice.

BTAAA · 02-22-2010, 04:58

Did a complete brake job on the fronts this weekend. My pads on the left side were gone, nothing but metal. I think that's what it was.

**Bert** · 02-22-2010, 07:48

Thanks for the update. Glad it was an easy fix.

BTAAA · 02-22-2010, 13:02

I hope it was my brakes. I haven't heard the grinding since, but it's only been a couple days. It was just weird how it would go away when I activated my 4x4.

**360ci** · 03-02-2010, 13:00

Brakes are more common. A lot of times you'll hear different noises when using 4x4 vs 2wd. Electronically controlled transfer cases (knob on dash) are controlled by the TCCM, or transfer case control module. They have a service life of around 10 years depending on use. Some can last longer or burn out quicker of course.

If you haven't done a 4x4 service in the last 30K or three years I'd advise getting it done. Best way to do it is to remove the cover, and clean the magnet thoroughly with a clean dry cloth. If any larger pieces of metal are present, then you'll know to expect some axle trouble in the next while. No gaskets are required, but you can use them if you wish. RTV sealant does the job just fine on it's own.