Question about 2002 Lincoln LS
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Posted on Jan 02, 2017
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
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
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
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
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
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