Vibration in transmission in highest gear

WES DAVIS

MEMBER
1999 FORD MUSTANG
4.6L
2WD
AUTOMATIC
20,000 MILES

Transmission seems okay except when it gets to probably highest gear it seems to have a vibration and you can feel that it is not smooth at all.

Wednesday, December 6th, 2017 AT 9:26 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Has the check engine light come on? Have you checked to see if there are any trouble codes stored in the computer?

https://www.youtube.com/watch?v=YV3TRZwer8k

Keep in mind, I assume you checked the transmission fluid and it is clean and full. A few things can cause what you described. An engine misfire, slipping clutch pack, bad torque converter, bad torque converter clutch.

Let me know.

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Thursday, December 7th, 2017 AT 6:59 PM

WES DAVIS

MEMBER
3 POSTS

Transmission fluid does need changing. No engine lights. I am going to change filter today see what happens. Is it okay to just change few quart's of transmission fluid at a time? I am also thinking that it could possibly be transmission mounts.

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Friday, December 8th, 2017 AT 5:27 AM

SATURNTECH9

MECHANIC
30,869 POSTS

I would change all the fluid that drains out and the filter and pan gasket as well. Another thing to check is your drive line u joints if there worn out/loose that will cause a vibration. Check them for play in them.

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Wednesday, December 13th, 2017 AT 1:29 PM