Question about 2003 Ford Explorer
What? YOiu mean your have error codes but the check engine light does not come on. Normal operation is no check engine light is on. When there is a sensor failure the engine "brain" detects a problem and set's error codes. And this "set" turns on the check engine usually with a red light. Other wise there is a problem with your engine's brain (ECU) or other names.
Posted on May 25, 2015
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Posted on Jan 02, 2017
SOURCE: check engine light codes, p0171,
this fords have very comun problems with maf sensors geting contaminated, if you have not or can hear any vacium leaks, the problem is goin to be a conataminated mas air flow snsor (maf)
allow the engine to cold down for at least 15minutes and the remove the air filter hosing and inside has to have a sensor, clean the two liitle resistors inside with brake or carburetor cleaner, allow it to dry and reinstall it.
if this inf help please mark it as fixya ranking after you try what i said
Posted on Jun 30, 2008
Jeff, If I understand you correctly you say your blower motor only works on high? check your blower motor resistor, located next to blower motor. The resistor makes the other speeds availiable, high bypasses the resistor, let me know if that fixes you up
Posted on May 27, 2009
Are you sure the alternator isnt "over" charging? if not, you may have a "loose" connection somewhere with the cables, or a malfunction in the dash cluster. Also, are you positive the battery is forsure good?
Posted on Jun 02, 2009
The doors in the blower/heater/evap housing are sticking because of an issue with the vacuum or elec servo motors or improper computer command
Posted on Sep 28, 2009
Unplug the battery for about 10 min then plug it back up start the engine. the computer should reset, if the light comes back on then u still have problems.
Posted on Jan 07, 2010
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