SPONSORED LINKS

Engine Judders at idle but goes away while driving

Tiny
TONY HANNON
  • MEMBER
  • 2004 RENAULT MEGANE
  • MANUAL
  • 90,000 MILES
My car has developed a judder at idle that vanishes when driving, which is replaced by an engine warning light whilst driving. This light vanishes as soon as idling. Mechanic friend disconnected coils from under car to test for bad one which he located.

Which coil part is this that I need to replace? Wish to order part but money is tight so do not want to order wrong component.
SPONSORED LINKS
Monday, December 5th, 2016 AT 10:59 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
Hey Tony,

I would replace the spark plugs first as these can cause the coils to malfunction. Next, runs the codes to see which cylinder it is and then replace that coil if needed, then clear the codes to recheck the system.

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

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

and

https://www.2carpros.com/articles/check-engine-light-clear-codes

Please let us know happens so it will help others.

Best, Ken
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, December 10th, 2016 AT 1:24 PM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links