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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 11 of 12

#97 of 111 Re: Code 0420 and Clyn [deleonj] by toomanyfumes

May 29, 2012 (3:46 pm)

Replying to: deleonj (May 23, 2012 7:25 am)
A lot of times if you're running with a bad coil the unburned fuel will damage the catalytic converter, that could be the catalyst code. Don't know why you'd still have a misfire, though.

#98 of 111 Missfire, coughing by villafane

Sep 09, 2012 (10:59 am)

I need help......i just changed the valve covers gasket and when all was done I fired the car and started right away, the problem is when I give gas almost to the maximum, the car is like it is misfiring or coughing but the "check engine light" did not come-out.
 
What could be the problem? where should I look to start? what can I do?

#99 of 111 2004 LS Misfires by rlc11

Oct 17, 2012 (1:23 pm)

I am having a problem with my 2004 LS. When driving it feels like the gas is not flowing properly and it misses. At times I smell gas when that happens. It is worse when you turn a corner and then accelerate. The engine light comes on periodically. I had it serviced when the engine light first came on and they changed the plugs. Now the gas smell has started, it is missing, and the engine light is still coming on. I am seeing a lot of coil issues on the forum, could it be related to that?

#100 of 111 Re: 2004 LS Misfires [rlc11] by toomanyfumes

Oct 18, 2012 (1:06 pm)

Replying to: rlc11 (Oct 17, 2012 1:23 pm)
Sounds like it may be the coils

#101 of 111 2003 Lincoln LS, V6, 112,000 miles - Engine & wrench illuminated by angelica6

Dec 04, 2012 (11:58 pm)

While driving my car, the engine light and wrench light illuminated and then my car powered down to about 20 to 35 mph. I pulled over and turned off my car, then the wrench disappeared and my car was able to accelerate at higher speeds. My dad checked under my car because I noticed oil leaks on my garage floor. The engine oil filter was just about to fall off because the bolt was very loose. Three weeks ago I had my engine oil changed at the dealership I frequent for oil changes since I bought my car there almost 10 years ago. Could the engine oil have leaked on the valve cover gaskets, coils, and spark plugs that you talk about? My dad noticed engine oil on the alternator and in other places and just wiped the oil off. I called the dealership when my dad noticed the oil filter was very loose ready to fall off. He has an Actron which output the following: P2107 Tac Module Processor, P2110 Tac System Forced Limited RPM, PO356 Ignition Coil F Primary/Secondary Circuit Malfunction, and PO303 Cylinder 3 misfired detected. The Actron indicated that the following were OK: Misfire monitor, fuel system moC Refrig Monitor, Oxygen Sensor, and EGR System Monitor. Also noticed the rubber on the right back wheel well inside the car in front of the gas tank where the gas cap is is like blown off and black soot is on the inside metal along the rubber where the door closes at this wheel well. Did this occur from the misfire? I often would smell something burning. Do you think the problem stemmed from the engine oil leaking out onto whatever else is near the engine? Do you have any suggestions?

#102 of 111 Re: 2003 Lincoln LS, V6, 112,000 miles - Engine & wrench illuminated [angelica6] by akirby

Dec 05, 2012 (8:20 am)

Replying to: angelica6 (Dec 04, 2012 11:58 pm)
The oil filter doesn't have a bolt so not sure what you meant by that.
 
One incident like that would not be enough to cause coil failures. I would clean it up and make sure no new leaks are occurring and see if you continue to have problems.
 
The TAC errors listed indicate a problem with the throttle by wire system which may or may not be related to the oil and misfire problems.

#103 of 111 Re: 2003 Lincoln LS, V6, 112,000 miles - Engine & wrench illuminated [akirby] by metal56m

Feb 25, 2013 (9:44 am)

Replying to: akirby (Dec 05, 2012 8:20 am)
I have a 2003 Lincoln LS V8. It has 122,000 miles. My engine was misfiring and I have had this problem before (coils) and had the diagnostics run and it showed cylinder #3 coil. I changed that coil and it helped a little but still had misfires. I went ahead and replaced all the spark plugs. It ran really smooth for a day and after that it started to misfire again, worse than ever. Could this issue be fuel injectors? What else could it be?

#104 of 111 2003 LS V8 Misfire Nightmare! by metal56m

Feb 25, 2013 (12:02 pm)

I have a 2003 Lincoln LS V8. It has 122,000 miles. My engine was misfiring and I have had this problem before (Had two coils replaced at the dealership previously) and had the diagnostics run and it showed cylinder #3 coil. I changed that coil and it helped a little but still had misfires. I went ahead and replaced all the spark plugs. It ran really smooth for a day and after that it started to misfire again, worse than ever. Could this issue be fuel injectors? What else could it be? When I changed the plugs, there wasnt really any oil that I could see...

#105 of 111 Re: 2003 LS V8 Misfire Nightmare! [metal56m] by akirby

Feb 25, 2013 (12:07 pm)

Replying to: metal56m (Feb 25, 2013 12:02 pm)
Go ahead and replace all the coils. Make sure there is no oil on the rubber boots. If there is replace the boots and fix the leak (usually valve cover gaskets). You may have to replace the spark plugs again.

#106 of 111 Re: 2003 Lincoln LS, V6, 112,000 miles - Engine & wrench illuminated [metal56m] by angelica6

Feb 26, 2013 (1:00 pm)

Replying to: metal56m (Feb 25, 2013 9:44 am)
I have a 2003 Lincoln LS, V6 with about $120,000 miles on it. Over the holidays, I had the same problem with the engine misfiring and powering down. I read all the messages on this site and one in particular from a mechanic lead me to do the following as he indicated should be done and I have had no problem since November, 2012. All spark plugs, ignition coils, and valve cover gaskets should be replaced. However, the dealership I bought my car and who services it saw the oil on a few spark plugs, coils, and gasket on passenger side and none on the driver side. They recommendeded replacing everything on the passenger side because it is not the parts that cost, it is the labor and the cost to take apart the engine on the passenger side is costly so it pays to just replace all spark plugs, coils, and gasket on that side. They recommended replacing the spark plugs only on the driver side even though there was no visible only, but because spark plugs should be changed at least every 100,000 miles and it is not costly to change the coils and gasket on the driver side because they are right on top of the engine unlike the spark plugs, coils, and gasket on the passenger side wherein the engine needs to be taken apart. It cost me just about $1,200, but it was worth it because I have no problems. Caution: I had a couple of backfires right after they were replaced only because the sensor needed to work out the bugs and get back on track. That lasted for only a couple of days. It has now been almost 4 mos and I have had no problems. If the coils and gasket go on the driver side, it will only cost me $110 each to replace -- for the 3 about $330. I have read others messages wherein people take their Lincoln to an independent mechanic and have incurred lots of dollars, only to have to take it to a dealership that knows about the Lincoln LS problems. Really when you think about it, spark plugs need to be changed every 100,000 miles so the $1,200 it cost me to replace these parts is just really maintenance ... your car is not falling apart ... it is just necessary maintenance for a high performance car.

Messages Page 11 of 12

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