Front Suspension Rattling Sound

Speedracer800

Member
Joined
Jul 11, 2018
Posts
20
Reaction score
7
Sorry for dragging up such an old thread. My 2018 Raptor has this left front rattle. I immediately thought brake pads rattling but I took the calipers off and saw the pads have very slight wear and nothing seemed loose. I applied brake caliper anti rattle goo and no help. I have also tried to "ride" the brakes over bumps hoping that would tell me anything and rattling didn't stop while applying brakes, which I thought would surely tell me something. Caliper looks identical to passenger side which is quiet.

Any thoughts I'd sincerely appreciate. My plan was to just go ahead and replace the pads and see what I get.
 

nikhsub1

FRF Addict
Joined
Mar 5, 2017
Posts
2,547
Reaction score
2,292
Look for loose bolts under the truck? Sway bar end links are a common source too.
 

Speedracer800

Member
Joined
Jul 11, 2018
Posts
20
Reaction score
7
Thanks for the ideas but no luck. Went ahead and installed the front brakes and nothing changed. Can find anything at all loose or screwed up with the suspension or skid/heat shields either. I'm really stumped here. I keep thinking brakes because it sounds exactly like that. I've had to deal with it in the past so pretty familiar with that noise on other vehicles.

Only thing I have not looked into yet is this vacuum valve I've seen mentioned here. Can anyone tell me what that does exactly and does my issue seem to sound like the vacuum valve failure?
 

nikhsub1

FRF Addict
Joined
Mar 5, 2017
Posts
2,547
Reaction score
2,292
Did you check the sway bar end links? you could remove them and go for a test drive and see if the noise is gone or still there...
 

Speedracer800

Member
Joined
Jul 11, 2018
Posts
20
Reaction score
7
Did you check the sway bar end links? you could remove them and go for a test drive and see if the noise is gone or still there...
Yes.. tried that too. No difference at all. Sway bar was very tight as well. Is the problem typically the sway bar?
 

Speedracer800

Member
Joined
Jul 11, 2018
Posts
20
Reaction score
7
Yea I went through everything I could see with not a single problem worth mentioning. So frustrating. single thing
 
Top