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Posted on Sep 17, 2010
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My 2001 ford mustang says service engine soon is that for a tune up

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steve morris

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  • Ford Master 1,675 Answers
  • Posted on Sep 17, 2010
steve morris
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Hi this is just telling you that you will be due for a service soon, all cars today are now set with a service indicator and set to a certain mileage, when you are near the end of the mileage that is set for your car , it will come up with a reminder to say you are due the service, this is just the normal , oil change , brake check, filters etc etc....hope this helps

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Anonymous

  • 4 Answers
  • Posted on May 26, 2009

SOURCE: reset service engine soon light 2004 ford mustang

It is not recomended to disconnect the battery and turn the light switch or horn or anything else on in order to clear codes stored in memory because any settings stored in the computer may be lost too.Go to autozone and rent the scanner to do it yourself.It is very easy,just connect the scanner to the connector located below the dashboard, turn the ignition on but not the engine and follow the prompts then when it says: clear codes?hit yes or enter and that is it.This is the safest way to do it.

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Anonymous

  • 1 Answer
  • Posted on Oct 27, 2009

SOURCE: Ford Mustang service engine soon and check fuel cap lights are on

just went through this myself. first be sure there are no leaks incap as suggested. second, since computer system pressurizes fuel system as part of emissions, any possible leak, like in filler neck to tank, will trip the check engine. that fixed it for me - last summer. now, new problem showed up again. this time 2 different trouble codes: EGR valve and a pressure sensor. fixed the problem. a week ago, light back on. this time a no $ fix-loose vacumn hose. best advice like the other guys said is to get it scanned and start there.

Anonymous

  • 12 Answers
  • Posted on Aug 14, 2011

SOURCE: I have a service engine

The service engine soon light is an indicator that something in your emissions control system is malfunctioning. It could be an oxygen sensor, spark plug, stopped up fuel filter, vacuum leak, or any number of other components. take ot to your locak Ford dealer and have it diagnosed by a professional. it will cost you less in the long run to have your dealer look at if you don't have the ability to do it yourself. I know many people who take their vehicle to "Joe" only to spend a fortune for someone to guess and finally go to the dealer and get it repaired for a couple of hundred bucks. JMHO.

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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.
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Mustang low dle po171

mustang forum solution.


http://www.moddedmustangs.com/forums/v6-mustangs/39429-trouble-code-po171.html



I had the same problem. Scroll down in that link.
you are running too lean.
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I'm afraid your right side Bank1 Converter is shot

420 & 430's are failed converters
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first you will have to hook the vehicle up to a computer and get the exact codes for the reason the light is on...then after fixing the problem you will have to clear the codes using the same computer you used to read them.... doing a tune up and changing the oil and filters may not have been the original problem with your vehicle or is not the nly problem with the vehicle...you will have to hook it up to a diagnostic computer and pull the codes to get down to the problem
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Ford Mustang service engine soon and check fuel cap lights are on

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2001 ford mustang service engine light on

IT ALMOST SOUNDS LIKE YOU MAY HAVE A VACUUM LEAK SOMEWHERE. USE A LENGTH OF RUBBER HOSE AND HOLD IT UP TO YOUR EAR TO PIN-POINT THE LOCATION OF A VACUUM LEAK. HOPE THIS HELPS. LET ME KNOW PLEASE. THANK YOU IN ADVANCE FOR AN HONEST RATING AND THANKS FOR USING FIX-YA. P.S. EGR VALVE IS VACUUM ACTUATED
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