Question about 2004 Mercury Mountaineer

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2004 mercury mounteneer fail safe mode bypass

Engine will not start

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6ya6ya
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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: Where is the AC filter located at in a Mercury

I'm going to assume that's the same as a cabin filter. If so i was told my 02 Explorer did not have one.

Posted on Nov 05, 2009

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SOURCE: I am driving down the

Now you have to stop using it,sorry

You have two main Fail Safes
One is overheating
Yours is IGNITION COIL MISFIRES

Without getting in a long technical story
the individual coils you have COP Ignition System,
either slowly fail and set no light,or set a code
In your case it doesn't matter because the codes won't help much

You most likely have a really bad ignition coil
It does not ground out as it should in the PCM (computer)
That spike comes back on the TPS Sensor (throttle position)
and then you lose the TPS normal Data that is the result
of where you push on the gas pedal

At that point there is no way to adjust fuel injector pulse,so
it starts killing cylinders and eventually goes into ETC Fail-Safe

Your Done-- Also there may not be many professionals that
will believe me. Been there done that.

Ideally a shop that actually uses an oscilloscope can solve
which coil is bad
You can buy 1 coil for $60.00 & walk it from one cyl
to the next and after a week fix it for $60.00

I will tell you, people have spent $3000.00 at dealers
& got zip.

In the event my story if off,
your next problem would be the
TACM (throttle actuator control motor )
That will be your codes. Do Not let the codes
guide you or your repair shop. The throttle body
is $700.00. If you do need one, you better be installing
your self.

Posted on Mar 31, 2011

jturcotte
  • 8589 Answers

SOURCE: i have a 2004 mercury

Hi, your truck must use a stepper motor to control the throttle. The computer is getting a signal from the accelerator position sensor and trying to rotate the throttle, but it is having trouble either rotating the throttle or sensing the position of the throttle. If you can give me the exact trouble code, I may be able to say more about what the problem is.

Posted on Aug 07, 2011

  • 458 Answers

SOURCE: How to reset airbags light on mercury mounteneer

The airbag light comes on if the airbag computer detects a trouble in the system.The only moving part that gives out due to wear and tear is gonna be the"clockspring"in the steering column(this is a printed circuit board on a plastic ribbon that is coiled up so that there will be a solid,reliable connection to the bag,instead of a brush contact that would have resistance).Most manufacturers also use this coil to connect to the horn button (only requires one more conductor).Many times the horn will be inoperative or cuts in and out when you turn the wheel.A steering wheel puller is probably the only special tool you'll need to replace the clockspring.

Posted on Mar 14, 2012

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1 Answer

I have a 2004 ford explorer xlt. the indicator says engine fail safe mode. what could be the problem?


Failure Mode Effects Management (FMEM) is an alternate system strategy in the PCM designed to maintain engine operation if one or more sensor inputs fail.
When a sensor input is perceived to be out-of-limits by the PCM, an alternative strategy is initiated. The PCM substitutes a fixed value and continues to monitor the incorrect sensor input. If the suspect sensor operates within limits, the PCM returns to the normal engine operational strategy.
All FMEM sensors display a sequence error message on the scan tool. The message may or may not be followed by Key On Engine Off or Continuous Memory DTCs when attempting Key On Engine Running Self-Test Mode.
With the fail safe mode was the "Service" wrench light lit or check engine light ?
With

Feb 07, 2015 | 2004 Ford Explorer XLT

1 Answer

What to do when engine fail safe mode comes on


The car is trying to tell you something - listen to it, or pay a lot to fix it later.......

Sep 29, 2014 | 2005 Mercury Mountaineer

1 Answer

Mounteneer 04 the gears was skipping and i changed the VSS and after i turn the car on the Engine safe mode came on, what shuld i try to fix the broblem


Take it to you're local Tech and have him reset you're comp for the new VSS and to check if it's the Correct one for the Transmission since there are 4 different ones for that Model

May 07, 2014 | 2005 Ford Explorer

1 Answer

Range rove 2004 is in engine failsafe mode is not starting?


You need an owners manual or access to factory
manuals to find out how many fail safes your vehicle has

Example: Electronic Throttle Control
Engine Over Temp
Transmission Failsafe
Misfire Fail safe to protect converter

Once you have checked for codes which I assume you have
done long ago,you use them as well as trouble charts to
diagnose things

Mar 29, 2013 | 2004 Land Rover Range Rover

1 Answer

Engine Failsafe Mode came on after cleaning battery cables. Vehicle will start, but won't run. No throttle


Fail safe is TPS sensor. When you go in fail safe the vehicle give a set amount of RPM and no throttle response the rule of thumb in fail safe is APP1 and APP2 does not agree the goal is to protect the catalytic convertor. So if the transmission was at fault you dont over rev to end up burning the Cat. Or over rev to break the engine It all boils down to a throttle body assembly as the solution

Feb 22, 2012 | 2005 Mercury Mountaineer

1 Answer

I have a 2004 mercury mountineer the servce engin light has come on and the engin fail safe mode. i had a test done on it and it says throttle actultor dontrol system could you please tell me what that...


Hi, your truck must use a stepper motor to control the throttle. The computer is getting a signal from the accelerator position sensor and trying to rotate the throttle, but it is having trouble either rotating the throttle or sensing the position of the throttle. If you can give me the exact trouble code, I may be able to say more about what the problem is.

Aug 07, 2011 | 2004 Mercury Mountaineer

1 Answer

Engine fail safe mode is on


go to autzone get free scan for dtc codes
report back

Oct 17, 2010 | 2004 Mercury Mountaineer

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