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Knocking noise and shaking engine

Tiny
ZACH PAULUS
  • MEMBER
  • 2000 TOYOTA RAV4
  • 2.0L
  • 4 CYL
  • AUTOMATIC
  • 150,000 MILES
After accelerating down the road yesterday, mistakenly turned the overdrive "off" and tried to pass a slow-moving car. Engine revved up without gaining speed, then kicked back, followed by a loud repetitive knocking sound (as well as the check engine light flashing). Vehicle now continues to knock loudly whenever idling, and becomes noticeably louder when opening the throttle (accelerating/decelerating). Oil was low (so topped it off), and is still making noise.
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Wednesday, January 18th, 2017 AT 12:27 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This may be a bearing problem as we cannot hear it have it. Checked locally.
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Wednesday, January 18th, 2017 AT 12:35 PM
Tiny
ZACH PAULUS
  • MEMBER
  • 2 POSTS
Thank you for the prompt response. I do not believe there is a way to upload sound files on this site (I could be wrong). I am pretty certain the sound is coming from the engine, not from the body of the vehicle. I am also afraid to drive it all, so it will most likely have to be towed if it is going anywhere.
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Wednesday, January 18th, 2017 AT 12:42 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Well if you do not have any lights on the dash you should be okay to drive it someplace to get it checked. Or if you can disconnect a spark plug one at a time and the knocking stops then that will tell you which cylinder it is.
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Wednesday, January 18th, 2017 AT 3:27 PM

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