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Lincoln LS random misfire

111 messages,  Last post on Apr 16, 2013 at 7:01 PM

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What is this discussion about? Lincoln LS, Engine, Sedan

Messages Page 6 of 11

#51 of 111 Re: Miss-firing at idle and at 3000rpm [brucelinc] by tenistony

Apr 28, 2008 (3:11 pm)

Replying to: brucelinc (Apr 28, 2008 5:30 am)
Bruce,
Thank you for the valuable advice.
Tony

#52 of 111 misfire by jay456

May 07, 2008 (8:41 pm)

i have a 2000 ls v8 i have a misfire i scanned it and it said misfire #4 and 7 i replace the coils and plugs and still said same i swapped it with known good ones from another cylinder and said the same i have no oil in the cylinders i tested to see if they fire and they do, checked injector with a injector teter and they work as well, it hesitates at ilde and it driving me crazy, is it possible i have a bad computer??? ive tried everything what else could it be.

#53 of 111 Re: misfire [jay456] by akirby

May 08, 2008 (7:56 am)

Replying to: jay456 (May 07, 2008 8:41 pm)
Are you sure you counted the cylinders correctly? Maybe you replaced the wrong ones. If not then it could be the fuel pump.

#54 of 111 Re: misfire [akirby] by jay456

May 09, 2008 (7:29 am)

Replying to: akirby (May 08, 2008 7:56 am)
yes...wait... i think so pasenger side from front of vehicle to rear 1-4 driver side from front of vehicle to rear 5-8 that should be correct. some of these messages say its not the fuel pump i think ill check pressure at the rail next just to make sure. have you ever heard of the PCV tubing i mean could that actually cause misfiring to happen.

#55 of 111 Re: misfire [jay456] by akirby

May 09, 2008 (7:41 am)

Replying to: jay456 (May 09, 2008 7:29 am)
I think that's right. Here is what I found:
 
Back (Fire Wall)
4 8
3 7
2 6
1 5
Front (Radiator)
 
I've heard some references to the PCV valve with misfire symptoms - certainly won't hurt.

#56 of 111 2003 Lincoln Ls V-8 misfire code PO357 by learpilot

May 30, 2008 (5:16 am)

I have a random misfire. I got the code of PO 357 Ign Coil G Primary/Secondary Circuit Malfunction. Which coil is "G". Is that number 7 , second from the firewall drivers side ?
Thanks for your reply, Rick

#57 of 111 Re: misfire [akirby] by pman9

Jun 11, 2008 (1:49 pm)

Replying to: akirby (May 08, 2008 7:56 am)
Just signed up so I may be late on your help. I know the problem well. Some times if you slide the connector off of the ignition coil that is in question you'll find the rubber seal pushed back. This will create a loose connection and condensation can get trapped and last but not least it will throw out a code and bad idle. From experience, don't replace a coil until you check the connection.

#58 of 111 Re: misfire [pman9] by jay456

Jun 27, 2008 (5:49 pm)

Replying to: pman9 (Jun 11, 2008 1:49 pm)
try to get to it this weekend, how do i go about fixing it if this is the problem

#59 of 111 by pman9

Jun 30, 2008 (9:29 am)

Be careful cause they can be very fragile after a few yrs. Check the connector that hooks to the coil. You should be able to push the plastic down with your thumb nail and slide it off. When you get this off there should be a colored (gasket)
o-ring inthe connector itself. Make sure it hasn't slid back. Use electric cleaner and spray into it but lightly. Let them all dry and hook them back up.
Make sure you diconnect your battery before you start. so that it will rescan the code.
Good luck

Messages Page 6 of 11

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