Engine knocking In gear three?

MOZAFAR1988

MEMBER
2017 MAZDA 3
2.5L
4 CYL
2WD
AUTOMATIC
150,000 MILES

During driving, when speed gear changes from 2 to 3 and 4 to 3, both manual and automatic drive mode, engine has knock which shake the engine and car during driving. I want to know how to solve it.

Thursday, December 26th, 2024 AT 5:31 AM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,571 POSTS

It sounds like the knock can be an engine misfire; do you have a check engine light on? If so, let's run the codes to see which codes are stored which can be an ignition coil or spark plug issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a guide to help us go over engine knocking and what will cause it:

https://www.2carpros.com/articles/understanding-and-repairing-engine-knocking-noise-an-in-depth-guide

Can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. Please go over these guides and get back to us.

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Thursday, December 26th, 2024 AT 1:58 PM

MOZAFAR1988

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6 POSTS

Video while engine just working or during driving?
Engine light is on and has error code I think 0U014 is error.

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Saturday, December 28th, 2024 AT 4:38 AM

MOZAFAR1988

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Actually its Shocking knock during driving and gear shifting 2 to 3 and 4 to 3.

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Saturday, December 28th, 2024 AT 8:06 AM

MOZAFAR1988

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Engine working normal driving and shifting gear make shock during drive.

Video (Click to make bigger)

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Saturday, December 28th, 2024 AT 8:49 AM

KEN L

MASTER CERTIFIED MECHANIC
48,571 POSTS

It seems like it is running okay, thanks for the video. Have you tried new spark plugs and ignition coils? Also, the code does not make sense. Do you have a p0301 style code?