Ask the Car People.SM


2003 Lincoln LS 3.9L Misfire after COP changes

19 messages,  Last post on Feb 22, 2010 at 11:22 AM

You are in the Lincoln LS Forum.

What is this discussion about? Lincoln LS, Sedan

Messages Page 3 of 3

#15 of 19 Re: 2002 LS 3.9 random cylinder misfire [mdelac01] by totaljett

Feb 21, 2010 (8:19 am)

Replying to: mdelac01 (Jan 25, 2010 1:07 pm)
Yeah I've been there playa. I replaced all valve cover gaskets, all ignition coils, all spark plugs and problem was solved. My pockets felt the pinch though. The key is the valve cover gaskets. They are the culprit.

#16 of 19 Re: 2002 LS 3.9 random cylinder misfire [totaljett] by cdh7

Feb 21, 2010 (4:09 pm)

Replying to: totaljett (Feb 21, 2010 8:19 am)
I have replaced both valve cover gaskets ($600), but the miss fires are still happening. Dealer said they cleaned the oil from plugs and wires. Seems misfires happen at low speeds, accelerating and hills. I didn't replace the plugs during the gasket change. Sure would be nice if I could find out if there was/is some kind of
recall or (free) dealership fix for this problem. 2001 LS 88K

#17 of 19 Re: 2002 LS 3.9 random cylinder misfire [cdh7] by akirby

Feb 21, 2010 (9:39 pm)

Replying to: cdh7 (Feb 21, 2010 4:09 pm)
There is no recall or extended warranty on a 2001. You need to replace all of the COPs (coil on plug). They were damaged by the oil or they just wore out on their own - either way you need new ones. Best to just replace them all and get it over with.

#18 of 19 Re: 2002 LS 3.9 random cylinder misfire [akirby] by cdh7

Feb 22, 2010 (11:09 am)

Replying to: akirby (Feb 21, 2010 9:39 pm)
COPs...can you give me educated guess about price for a COP?

#19 of 19 Re: 2002 LS 3.9 random cylinder misfire [cdh7] by akirby

Feb 22, 2010 (11:22 am)

Replying to: cdh7 (Feb 22, 2010 11:09 am)
Not sure exactly - never had to replace mine. I know you don't want the really cheap ones on ebay. I'm thinking they're in the $40-$60 range.

Messages Page 3 of 3

To POST a message, please Sign In.

Advertisement

Browse by Category

Browse by Vehicle
   View All Vehicles

Browse by Board
Browse by Topic
View All Topics

Edmunds Community

Advertisement