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Dan, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 1694
Experience:  Auto Technician
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How difficult is it to find a serious hard vibration on a

Customer Question

How difficult is it to find a serious hard vibration on a 1999 Ford minivan?
Submitted: 10 months ago.
Category: Transmissions
Customer: replied 10 months ago.
It's in the motor and transmission.
Expert:  Dan replied 10 months ago.

Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.

Expert:  Dan replied 10 months ago.

A misfire would cause a hard vibration.

Customer: replied 10 months ago.
should I try to pull each plug wire and tell a difference in the way the motor runs ?
Customer: replied 10 months ago.
Expert:  Dan replied 10 months ago.

Yes you can pull a wire one at a time and listen for the change in rpm to find out which cylinder is misfiring.

Customer: replied 10 months ago.
I know this sounds like a Noob question but what the rpm decrease or increase?
Expert:  Dan replied 10 months ago.

Rpm will drop, you will see a noticeable difference in how the engine is running if you have a working cylinder, if no change then you have a dead cylinder.

Customer: replied 10 months ago.
Ok I'll check wen I get off work at 5