2005 Lincoln LS Logo
Posted on Mar 12, 2010
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My 2005 lincoln Ls check engine light and wrench light comes on. the first time - a ford tech. changed a spark plug& wire. the second time a different spark plug & wire. third time another spark plug & wire. all one week apart. the check engine light is on a fourth time. the vehicle only has 56,000 miles. this time while i was driving the vehicle quit going even though i was pushing on the gas pedal i had to pull over.

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  • Posted on Jul 18, 2010
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I have the same problem. My Lincoln Ls wrench light comes on and it quits. All spark plugs, all coils and the throttle body has been replaced. I think the LS model is a lemon! Any information or suggestions will be appreciated.
Thanks, Betty

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  • Posted on Mar 12, 2010
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Wires ?? I didnt think Fords had spark plug wires anymore. You really needed to replace ALL of the spark plugs. Coils are common to go bad.

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I own a 2004 LS. I would lose your Ford Tech. I put in one coil last Thur on my wifes V8. Some people like to change all at once. At $51.00 each and the rest working, I'll do them as they fail. They are COP- coil-on-plug. A coil and a spark plug boot attached,No Wires. Also stay with the OEM Spark Plugs. NGK-FR5AP-11 (NGK 6569) they work the best. Also,you have to use 89 or higher octane fuel and even then they knock. Scan for codes and be aware that the Throttle Position Sensor may be going. Also the EGR Valve will be next,followed by the Trans Solenoid Pack

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  • Posted on Mar 25, 2010
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I bought my 05 v6 brand new.. 1st the air conditioner out, then i've had to replace 3 coils and plugs now car wrench light keeps coming on and dying while driving. also battery is **** also... who know whats wrong!!!

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Probably problem with the (ETC) electronic throttle control system . If the engine light is lit ,didn't anyone check for DTC'S - diagnostic trouble codes ?
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Feb 19, 2018 • 2005 Lincoln LS
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Number 4 cylinder missing or loose spark plug wires. Where are they
First, if you would like help with your Lincoln, it would be really helpful if you were to mention WHICH ENGINE your Lincoln is equipped with. There were 2 different engines available for that year.

Second, if you are looking for spark plug wires on your 2005 Lincoln LS, you are in reverse...there are none. Your Lincoln is equipped with Coil-On-Plug (COP) ignition. Each spark plug has an individual coil mounted on top if it.

What, exactly are you trying to fix?

If you are trying to chase down an OBD-2 code P0304, there are a WHOLE LOT of possible causes for that code. However, on your vehicle, loose/missing/damaged spark plug wires is NOT one of them.

Please review the following article:

What Else Could Be Wrong?
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Mar 18, 2012 • 2005 Lincoln LS
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Car stalling when wrench light come on in the dash of my 04 lincoln ls
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Jul 13, 2011 • 2004 Lincoln LS
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We have a 2005 Lincoln Lse with aV8 engine all coil packs have been replaced but they still continue to go bad .the car runs good the thorttle body also has been replaced and still are having coil...
You never needed the replace all the coils

I suspect that was at a dealer,waste of time
& your money

The coils fail at a rate of 1 a year,sometimes 2

They cost $59.00 plus tax & take no more than
30 min to install if you have no experience

They have been doing that since 1998 on ALL
fords products with COP ignition coils & now
they are on most all makes today & fail but not like
a ford

Very few people like or work on fords & never solve
LS issue

I have a 2004 V8 & a magic touch I guess

You only go to a dealer to buy a car & for warrantee
work. I learned that at age 19 some 47 years ago

Replace the front 2 O2 Sensors at 100,000 miles
before you get a Wrench MIL Lamp

They have to be ordered from NAPA &
the wires are 5" longer than OEM but still
OEM NGK/NGT

Spray the MAF Sensor with CRC MAF Cleaner

Only use NGK Spark plugs
They were the OEM Mfg & your V8 takes a special
center electrode 6mm I believe

FR5AP-11E

NGK 6569 avail at NAPA

Have to use premium gas or you
get a knock even with the dealer PCM
Flash Update
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Just take the car for a scan or regular servicing.
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Jan 11, 2010 • 2005 Lincoln LS
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this sounds like an engine misfire, the check engine light is telling you it is misfiring. next time the light is on you should go to an auto parts store as most of them will pull the code for you at no charge. I own a 2002 LS and I have replaced 4 coils in less than one year to correct this same problem.
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Jul 18, 2009 • 2002 Lincoln LS
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When # 7 was misfiring it wouldn't even pull a code all of the time, the check engine light would come on one day then go off the next, really strange.
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paul
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