Question about 2002 Mercury Sable

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2002 Sable LS 43,000 miles. Check Engine light on again!

2002 Sable LS 43,000 miles. Check Engine light on again, just replaced the bad ignition coil and wires and plugs 6 months ago. there are no performance effects yet. have refilled the gas tank 5 times since light came on... Help

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  • stockdream Feb 26, 2009

    PEP BOys pulled 2 codes 172 and 175 running rich bank 1 and bank 2.

  • stockdream Feb 26, 2009

    PEP BOYS read the codes for Free, got 2 codes P0172 and p0175. rich bank 1 and bank 2. the guys stated but wasn't sure it was an Oxygen sensor. what do the experts say. how hard to replace?

  • Anonymous Mar 30, 2014

    plugs, ignition harness,coil tower,fuel pump,and filter changed by ford certified shop.check engine light appeared after 32 miles.shop cleared cel but it reappeared shortly, car runs very good.

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Without a fault code its impossible to diagnose. try pep boys or aamco or auto zone they will pull the code for you, usually for free. The code will relate to a sensor or area to be fixed. This will save you money and needless parts . post the code or codes so we can help

Posted on Feb 17, 2009

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Engine rpm surges intermitently


Miles? Have you replaced ignition coils recently? Pretty good chance that they could be going bad. I would start by swapping all 8 coils and plugs and probably changing the valve cover gasket as well as those are known to go bad in the 2000-2003 LS

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2002 Mercury sable misfiring only on cylinder 3


Can't believe some the lame answers here. Anyone having this issue check the PCV hose where it attaches too the air intake, the rubber breaks down and develops a leak. But these engines also have wiring issues that causes crankshaft sensor to fail at startup or under 1000 rpms causing the computer to shoot a code and trigger the engine light. I have these issue cause the above problem.

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Blinking check engine light


its most likely an ignition coil. you are probably getting a spike in the electrical system. my lincoln ls does the same thing sometimes. the check engine light wiill blink for awhile then stop, and eventually it will stay on and run rough. every single time it turned out to be an ignition coil.

Nov 30, 2011 | 2002 Isuzu Axiom

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Lincoln ls 2002 sometimes **** on freeway when I a. ccelerate slightly what could be the problem and would it be expensive to coorect?


Change O2 Sensors at 100,000 miles
front 2 only-ones closest to the engine

Change spark plugs at 70,000 miles-
use OEM Tip Configuration (NGK Plug)

Fuel Filter every 3 years

Clean MAF Sensor-CRC MAF Cleaner

CHECK-TPS Sensor-with an oscilloscope

CHECK -EGR Valve- disconnected vacuum hoses,
plug them and test drive

Check COP Ignition Coils-with oscilloscope

Smoke test-intake for vacuum leaks

Mar 10, 2011 | 2002 Lincoln LS

1 Answer

O2 lincoln ls check engine light & fuel gauge went to empty the next day it wouldny start replaced fuel pump & fuel gauge ran fine drove about 40 miles the next day started it up check engine light...


You have two pumps,I guess you know that ,if you already did one. Did you check fuel pressure at the rail and check out the electronic pressure regulator? What codes are coming up and do they stay set?

Feb 05, 2010 | 2002 Lincoln LS

2 Answers

2003 Lincoln LS check engine light


I had the same problem with a 2004 LS. I took it to the dealer and turned out that 6 ignition coils were out and was factory defect. Ford extended the warranty for the ignition coil. All work and parts "no charge" this service was done about a month ago

Apr 28, 2009 | 2002 Lincoln LS

1 Answer

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I have an '01 Sable that posted a Check Engine light and the problem turned out to be a Mass Airflow Sensor.

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3 Answers

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

Nov 28, 2008 | 2004 Lincoln LS

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