Vibration in third gear while accelerating

Tiny
NSMITH91
  • MEMBER
  • 1998 ISUZU HOMBRE
  • 197,000 MILES
My truck is a manual transmission, five speed. Whenever I shift into third gear there is heavy vibration when I give it gas. The vibration seems to happen in the "middle" of the RPM and does not happen in the very beginning of the gear and also goes away in higher RPMs. It really as far as I can tell only happens in third gear when accelerating.
Saturday, May 4th, 2013 AT 4:28 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,432 POSTS
This sounds like a classic engine misfire which shows up under the most load of the engine which is what you have described. I would start by giving the engine a good tune up, Here is a guide to show you how to do i right.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please let us know what happens so it will help others.

Cheers, Ken
Was this
answer
helpful?
Yes
No
Saturday, September 9th, 2017 AT 8:16 PM

Please login or register to post a reply.

Sponsored links