I replaced the plugs and wires and now the car is not running right

2002 PONTIAC GRAND AM
141,256 MILES • 3.4L • AUTOMATIC
Avatar
CYNTHIA MALLORY
  • MEMBER
  • 1 POST
Changed plugs and wires now car will not run right. could the suggested firing order be wrong ? If not what could be the problem?
May 10, 2020 at 1:39 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Yes, check the firing order.

I attached a picture for you to test the firing order.

Make sure the wires to to the correct cylinder with the numbers on the picture.


Roy
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
May 10, 2020 at 1:50 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.