I hear and feel a grinding noise when accelerating. What could it be?

Asked by Jul 13, 2014 at 02:16 PM about the 2013 Scion FR-S Base

Question type: Maintenance & Repair

I have a sicon FRS, and I hear a grinning
noise under the front end of the car. I also
feel the grinding vibrations through my gas
paddle. The only time I hear and feel the
grinding is when accelerating, there have
been a few times where I have heard it
when dropping gears when in trip tronic
mode. The grinding does not occur when
idling. The car takes off great! Gears switch
perfectly! The car preforms perfectly, in
other words the grinding is not affecting the
performance of the car at all. I have done a
few modifications to the car, to be specific I
have a cat back exhaust, uel cat delete
headers and a short ram cold air intake.

2 Answers


Grinding is not good. Do not continue to drive it till you find the reason. Best to get under the car to see if something is hitting the driveshaft.

1 of 1 people found this helpful.

Most likely you exhaust rubbing on the crankshaft when accelerating. My Borla kit was extremely close. With the torque load on acceleration, I wouldn't be surprised if that was the case.

Your Answer

Scion FR-S Experts

  • #1
    Chase Sutherland
  • #2
    Tom Demyan
  • #2
    Michael Kane
View All

Related Models For Sale

Used Subaru BRZ
12 Great Deals out of 1,130 listings starting at $12,492
Used Ford Mustang
288 Great Deals out of 38,306 listings starting at $1,995
Used Nissan 370Z
58 Great Deals out of 2,379 listings starting at $9,288
Used Hyundai Genesis Coupe
36 Great Deals out of 1,078 listings starting at $5,950
Used Chevrolet Camaro
243 Great Deals out of 29,880 listings starting at $4,980
Used Mitsubishi Lancer Evolution
7 Great Deals out of 518 listings starting at $14,000
Used Scion tC
66 Great Deals out of 2,902 listings starting at $1,795
Used Subaru Impreza WRX STI
11 Great Deals out of 532 listings starting at $9,800
Used Dodge Challenger
123 Great Deals out of 25,350 listings starting at $7,250
Used Honda Civic
341 Great Deals out of 52,141 listings starting at $1,200
Used Subaru Impreza WRX
40 Great Deals out of 1,144 listings starting at $2,999
Used BMW 3 Series
910 Great Deals out of 33,016 listings starting at $1,000
Used Dodge Charger
259 Great Deals out of 32,995 listings starting at $495

Used Cars For Sale

2016 Scion FR-S Base For Sale
48 listings starting at $15,999
2015 Scion FR-S Base For Sale
92 listings starting at $14,500
2014 Scion FR-S Base For Sale
47 listings starting at $12,470
2013 Scion FR-S Base For Sale
191 listings starting at $10,600

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.