Question about 2002 Ford Expedition

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Service Engine Soon light on - 2001 Expedition, 78,000 miles

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Need to know the code. most common codes found in this type vehicle are for Evap, EGR, lean codes for
vacuum leaks & misfire codes. let me know ... be glad to help

Posted on Jun 17, 2009

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Posted on Jan 02, 2017

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I have a 2001 mustang bullitt that is showing service engine light on. Took it to mechanic and he put 2 different machines on it to show code for problem. No codes coming up and he can't turn off the...


There is a diagnostic procedure in the factory service repair manual for engine light lit ,no codes . Did you take it to ford dealer ? MIL - is referring to check engine , service engine soon etc...
  • MIL always on when engine is running (no DTCs):
  • MIL circuits
  • For Focus, Mustang, Town Car, Continental, LS6/LS8, Escape, Windstar, F-150, Expedition and Navigator/Blackwood:
  • Instrument Cluster, Section 413-01 of the Workshop Manual.
  • All Others:
  • GO to NB1

SERVICE ENGINE SOON indicator After the engine is started, the SERVICE ENGINE SOON indicator will prove out for a duration of three seconds. If the instrument cluster does not receive a message from the PCM within five seconds, the instrument cluster will illuminate the SERVICE ENGINE SOON indicator and log a diagnostic trouble code (DTC).

  • An indicator is inoperative/always on - SERVICE ENGINE SOON
  • Circuitry.
  • Bulb.
  • Instrument cluster.
  • PCM.
  • GO to Pinpoint Test P .

PINPOINT TEST P: AN INDICATOR IS INOPERATIVE/ALWAYS ON - SERVICE ENGINE SOON CONDITIONS DETAILS/RESULTS/ACTIONS P1 CARRY OUT THE INSTRUMENT CLUSTER SERVICE ENGINE SOON INDICATOR ACTIVE COMMAND Trigger the HEC active command MIL.
  • Did the SERVICE ENGINE SOON indicator illuminate?
Yes REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual.

No INSTALL a new instrument cluster; REFER to Instrument Cluster . CLEAR the DTCs. REPEAT the self-test.

Jul 18, 2017 | 2001 Ford Mustang

2 Answers

What's your problem?2004 ford expedition service engine soon light


I assume you resolved the issues by now

Check lights have been on all vehicles for 31 years,
so you shouldn't be asking about them

Does not matter what light comes on your dash

The procedure is always the same
Check for codes
Diagnose & repair code related issues first

Aug 18, 2012 | 2004 Ford Expedition

1 Answer

2001 Expedition - check engine light came on. Oil change on 1/27/11 not due for another 1000 miles. It just started to tremble and is running rough.


your oil change has nothing to do with your check engine light. probably needs spark plugs and a coil or 2

Mar 29, 2011 | 2001 Ford Expedition

1 Answer

2006 ford expedition limited edition wth 78,000 miles, while accelerating at a low speed between 25 an 35 miles an hr there may be a shutter/vibration? replaced the spark plugs about a yr ago or 15,000...


try replacing the idle control sensor,$20.00 at most does it rev up and down at all by itself?won't idle or stall when trying to acceorate? this may be your problem$20.00 for part-autozone,advance autoparts. 15minute to replace,my labor$25.00 shop around only 2 bolts to replace 1 plugin thats all. spped sensor about the same price. check engine light on? it may be further issue. thank you for choosing fixya.com

Dec 31, 2010 | Ford Expedition EL Cars & Trucks

1 Answer

Bad acceleration on 2001 alero


I assume you have no check engine light, or service engine soon light on.
Start with the fuel filter that should be replaced every 30,000 miles.
The filter is located under the vehicle between the the fuel tank and engine.

Feb 24, 2010 | 2001 Oldsmobile Alero

1 Answer

01 Ford Expedition. Check Engine light and failed Smog check.


whoever installed the egr valve, if it wasnt you, just cleared the engine codes, thus giving you this problem once again. Get it scanned at autozone, and go from there.

May 18, 2009 | 2001 Ford Expedition

1 Answer

2003 Saturn L200. Car will turn over but will not


I have the same model. Congrats you made it over a 100,000 miles! Most of them failed after as little as 20,000 or around 78,000 miles becaue there was a design flaw in that the timing chain did not get any oil to it. I had the 78,000 mile engine. Mine failed while driving at 65 miles an hour on the expressway. Pretty much wrecked the engine. The problem with putting in a used engine is that no other type of engine will fit in this car and you can count on engine failure again at 20,000; 78,000 or from what you tell me after 100,000 miles. You would be better off investing in a down payment for a Toyota made here in America that gets over 50 miles to the gallon. I used to be an oldsmobile man and then reluctantly switched to Saturn but am fed up with GM completely now and all american car manufactures.

Apr 30, 2009 | 2003 Saturn L-Series

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