• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


2017 Fiesta ST Rattle 2.5K-3K RPM

Messages
2
Likes
0
Location
United States
#1
Hi All!

This is my first post, I wasn't able to find any threads on my exact issue, or at least nothing that solved the problem.

car details: 2017 fiesta st, 63k miles, completely stock its whole life until I added an oil catch can. (Before this problem occurred, double checked hose routing before and after service)

background: I didn’t have this issue prior to taking my car to the dealership for a water pump and timing belt job. The day after getting it back, I have experienced a rattle at 2.5k-3k rpm. This occurs when sitting still in neutral, between shifts that match this rpm, accel and decel at this rpm in gears 1,2,3. When rolling and having the car in neutral and revving to the rpm range mentioned. It actually seems worse at that time.
What I have checked: coolant reservoir rattle, radiator rattle, lower trans mount, exhaust hangers, exhaust heat shields, cat mount, axels, radiator vent flaps, I’m at my wits end. It’s not aggressive but loud enough I can hear it in the cabin, but less when the door is open or windows are down. I fear it could be the trans? The last thing I did was put my foot against the driver side axel and rev the car and I could feel vibration through the axel that matched the rpm range rattle. The axel does have a little vertical play in it at the trans. The wild thing is that this was not there prior to service.

The car drives, shifts, pulls everting fine. Just rattles.

what on earth could this be? I’m worried it could be something terrible. I have only had the car for 2 months and it was completely fine before this. Came from Arizona. Flew out there, bought it, drove it home 28 hours in 3 days.

any help is appreciated. Thank you!
 


SteveS

1000 Post Club
Messages
1,530
Likes
1,824
Location
Osage Beach, MO, USA
#2
Take the car back and have them diagnose it. Most likely they didn't tighten something or they left something touching that shouldn't be. Or they left a 10mm socket sitting on something. Any time something new happens after a service, go back to what was done as it's the most likely cause of the new symptom. And since you paid for it to be done right, they are on the hook to make it right. Make clear that the noise was present the moment you drove off the lot. If it has been a long time because you messed around trying to find it yourself you may have disadvantaged yourself because they may try to not own up to causing it due to the time lag.
 


OP
D
Messages
2
Likes
0
Location
United States
Thread Starter #3
Take the car back and have them diagnose it. Most likely they didn't tighten something or they left something touching that shouldn't be. Or they left a 10mm socket sitting on something. Any time something new happens after a service, go back to what was done as it's the most likely cause of the new symptom. And since you paid for it to be done right, they are on the hook to make it right. Make clear that the noise was present the moment you drove off the lot. If it has been a long time because you messed around trying to find it yourself you may have disadvantaged yourself because they may try to not own up to causing it due to the time lag.
Hey Steve! I am for sure taking it back to them, I called immediately after it happened. Have to wait until Thursday to get it in. I made sure to tell them literally the day after leaving the lot when I drove it home. Mentioned what the sound was and that it was present after service and not before service. Haven’t officially moved or unbolted anything. Left it as is as soon as I heard the sound and parked it in the garage. Just wanted to see if anyone had any idea of what it could be.
 


Similar threads



Top