I have a check engine light on

Tiny
ANONYMOUS
  • MEMBER
  • 2000 LINCOLN AVIATOR
  • 180,000 MILES
I have a check engine light on. When put on scanner it first said mis fire cylynder 6&7 so we changed all plugs. Wires light went out for short time. Came back on said cylinder8 mis fire rechanged that plug. Also got new coil pac. Came back on saying 8 again and added catyletic converter code. The light is still on with an intermittent miss mainly when accelerating. Can you help. Also from time to time when heater is on you can smell antifreeze. Thought maybe heater core however I still have heat.

Saturday, March 16th, 2013 AT 4:29 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
When you removed the coils, were they wet?

Intake manifolds are common for leaking and causing re occuring missfires.

The cat may have gone bad from the missfires adding too much unburnt fuel into the cat.

Roy
Was this
answer
helpful?
Yes
No
Saturday, March 16th, 2013 AT 4:31 PM

Please login or register to post a reply.

Related Check Engine Light Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
In­struc­tional re­pair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check en­gine or ser­vice en­gine soon turned on? In this guide we talk about what this is as­so­ci­ated with this no­to­ri­ous light, what it is used for and what you...