Question about 2002 Lincoln LS

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Lincoln ls runs rough when cold , but once warm runs ok.

Had new egr put in

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6 Suggested Answers

  • 3 Answers

SOURCE: which ignition coil is bad?

I went thru this on my 2002 LS as well.
I replaced one ignition coil at the dealer - only to get the same misfire code on another cylinder. After a little research found out is actuall a gasket/o-ring problem design of the block. Spark plugs are deep in the block - under the oil - which is why they are supposed to last 100,000 miles. But the o-rings start to leak some where between 65k-85k miles. Coils go bad because of oil contamination. If you don't solve leaking oil problem will have to replace coils again - but sooner - because leaking oil will be progressively worse.
Cost - 8 ignition coils
set of spark plugs (who knew they were that expensive
and a ton of cash for the labor to tear down the top of the motor

Posted on Dec 14, 2008

chuck943
  • 783 Answers

SOURCE: 2000 Ford Explorerer rough idle When cold

what codes are present? If it is lean codes P0171/P0174 problem is most likely the orings leaking between upper and lower intake manifold if this is a 4.0L

Posted on Feb 11, 2009

  • 1 Answer

SOURCE: I have a 2001 lincoln LS V8 when i put it in gear

I had similiar problem. I removed the IAC ( IDLE AIR CONTROL VALVE) and sprayed it clean with throttle body cleaner. Allowed to air dry, reinstalled and problem solved. Hope your is as simple as this.

Posted on Apr 12, 2009

GregV24CHOPP
  • 11 Answers

SOURCE: when cold, it idles rough, revs high then low! After warmed up it runs fine

if it runs high when you first start it then mellows out,, theirs no problem , all of our chevys do that.... but if its sputtering or you hear a quiet popping noise check spark plugs

Posted on May 20, 2009

  • 11 Answers

SOURCE: 1984 Jaguar xj6 runs rough on cold start and fuel

Hello Drankin ;
The causes of this particular problem can be that of many . Is this car a daily driver or a garage queen ? I would attack this problem by ruling out the items with the lowest cost first . Please note that the info below are some of the steps I would take at tackling this problem .

a) Check that your oil filler cap is on tight and that the seal is good .
b) Check the electrical connections to be certain nothing is loose .or disconnected .
c)If the car has been sitting, run it for a while and try to empty the tank of that old gas . I would refiill it with new gas and fuel injector cleaner .
d) I would change the fuel fiter with a new one .You must do this with the engine depressurized and off with both filler caps open .
e) You could also check for air leaks at the intake manifold .
f) How is your exhaust ? Is it leaking ?Is it blocked at the ends ?
g) Check the the Butterflies on the Air-Flow-meter . Make sure that they open and close easily . There are spray on cleanes for this . Do not hone the openings .
h)Relace the charcoal cannister .
i) I would do a compressionon all 6 cylinders
j)Check the fuel pump for proper pressure or replace it .
k) At the emission's station check to see what is the idle mixure and you may need to have the idle mixure adjusted on the airlow meter .
L) Check/ Rule - Out the Auxillary air valve .
m) Check/ Rule - Out the Fuel Injectors .
n) Check/ Rule -Out the Coolant temperature Sensor
o) Check/ Rule - Out the Air Temperature Sensor
p) Check/ Rule - Out the Thermotime Switch

I hope that this has been helpful to you .

Posted on May 25, 2009

  • 3640 Answers

SOURCE: 1997 Oldsmobile Cutlass P0405 EGR Error Code

did you clear the code after putting on egr!

Posted on Sep 03, 2009

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Related Questions:

1 Answer

Why does my 2003 Lincoln ls run rough when its cold and smooths out when its warms up?


could be fuel is not being metered correctly to the injectors due to fouled O2 sensor.

Feb 04, 2015 | 2003 Lincoln LS

1 Answer

Lincoln ls cold start idles rough in the morning


Do you have a block heater? You can have on installed if not, then plug your car in over night. You car will run much smoother in cold weather.

Nov 06, 2013 | 2004 Lincoln LS

1 Answer

Car was running rough emmissins light came on ,had it daignosed 3rd coil was bad changed all coils,spark plugs,ran good for 2months,light came on again exchanged coils,replaced,still runs rough,what could...


COULD BE CLOGGED OR FAULTY FUEL INJECTOR TO 3RD CYLINDER.ALSO LOOK FOR LEAKING VACUUM LINES AND HOSES.ALSO LEAKING EGR VALVE WILL CAUSE ENGINE RUN ROUGH..

Jan 12, 2011 | 2000 Lincoln LS

2 Answers

My 2000 lincoln ls feels like it has a misfire while idling @ stops. excelerates fine until it hits between 40- 50 mph. then has same feeling of the misfire or low power. then once it reaches over 50 mph...


Buy one new coil from auto parts store $59.00

Walk it one cylinder at a time

Why would you swap coils,obviously one
of them is bad.

The one you took out of #5,find it ,and put in the
new one there.

I would put in new OEM Plugs.
They are a special tip just for the LS
at least on ones newer than yours
They are NGK even though they have motorcraft
on the ceramic shell.

Clean the throttle plate and MAF with the two
CRC products for that

I wouldn't rule out a bad EGR Valve as another issue,
though not related to the misfire issue

Dec 15, 2010 | 2000 Lincoln LS

1 Answer

My 03 Lincoln LS started idling rough only in the mornings when first started. Rest of the day it starts and runs smooth.


Sounds like it might be leaking intake manifold gaskets. They leak when cold but as the engine warms up they swell and seal up. This is common with rubber intake manifold gaskets.

Oct 07, 2010 | 2001 Lincoln LS

1 Answer

Engine misses and bucks till it warmes up then runs fine


EGR valve or system is bad. that is Exhaust Gas Recycling valve. It's a pollution device that recycles exhaust gas back through the engine once it warms up. It's not suppose to work while engine is cold so there is a thermostat system for it that closes off the EGR valve while engine is cool. Once it warms up then it opens the valve. If you're recycling exhaust gas while engine is cool it will run rough. This can be hard for the average guy to troubleshoot as you need check the vacumn switches and thermostat valve.

Dec 02, 2009 | 2000 GMC New Sierra 1500

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