2010 MKS-T Flashing CEL and Missing

[sholxgt]

I don't see a mention of a cutoff or iinertia switch after 2009 MY, but there might be one.

Fuel Pump (FP) Shut-off Feature

NOTE: Refer to the Description and Operation, Intelligent Access with Push Button Start in Section 419-01B to review the procedures for achieving the various ignition states (ignition OFF, ignition in ACCESSORY, ignition ON and ignition START) on vehicles with this feature.

In the event of a moderate to severe collision, the vehicle is equipped with a Fuel Pump (FP) shut-off feature that is initiated by the event notification signal.

The event notification signal is a signal provided by the Restraints Control Module (RCM) to the FP control module. Signal communication between the RCM and the FP control module allows the PCM to shut-off the FP .

Should the vehicle shut off after a collision due to this feature, the vehicle may be restarted by first turning the ignition to the OFF position and then turn the ignition to the ON position. In some instances the vehicle may not start the first time and may take one additional ignition cycle.

Interesting!  As usual, you are a wealth of information.  Sounds like instead of an inertia switch, they now collect the data from the restraint system.

Back to the OP, does it only happen with a passenger?  This is probably a crazy idea...Wonder if there's a problem with the passenger side seat belt sensor?

Another thought I have is that the PTU isn't working which is overworking the traction control to the point that it's having to basically stop all power production to stop the wheel spin.  That would account for a CEL.

[TX MKS-T]

I don't see a mention of a cutoff or iinertia switch after 2009 MY, but there might be one.

Fuel Pump (FP) Shut-off Feature

NOTE: Refer to the Description and Operation, Intelligent Access with Push Button Start in Section 419-01B to review the procedures for achieving the various ignition states (ignition OFF, ignition in ACCESSORY, ignition ON and ignition START) on vehicles with this feature.

In the event of a moderate to severe collision, the vehicle is equipped with a Fuel Pump (FP) shut-off feature that is initiated by the event notification signal.

The event notification signal is a signal provided by the Restraints Control Module (RCM) to the FP control module. Signal communication between the RCM and the FP control module allows the PCM to shut-off the FP .

Should the vehicle shut off after a collision due to this feature, the vehicle may be restarted by first turning the ignition to the OFF position and then turn the ignition to the ON position. In some instances the vehicle may not start the first time and may take one additional ignition cycle.

Very interesting !  But if this was occurring id expect my car to shut off and not run in limp mode id assume. Still on the hunt for the issue though as its preventing me from modding further outside of my K&N panel filter.


Sholxgt - It happen either with pass or not. And I seem to be only to replicate when the gas level is 1/4 or lower and when it occurs its for maybe 15 seconds of limp mode CEL flashing then CEl goes off and normalcy is restored again.

[sholxgt]

Wonder if it's tied somehow to the traction control system?  Do you have traction loss or interference from the traction control system prior to the CEL?  Thinking that you may be getting a fuel cut by the traction control system that is then leading to some kind of aftermath.

Maybe try a few passes with the traction control turned off and see what happens? 

[TX MKS-T]

Wonder if it's tied somehow to the traction control system?  Do you have traction loss or interference from the traction control system prior to the CEL?  Thinking that you may be getting a fuel cut by the traction control system that is then leading to some kind of aftermath.

Maybe try a few passes with the traction control turned off and see what happens?

I usually disable traction control anytime I plan on "joy riding" so been off when the issue presents itself.

[glock-coma]

Wonder if it's tied somehow to the traction control system?  Do you have traction loss or interference from the traction control system prior to the CEL?  Thinking that you may be getting a fuel cut by the traction control system that is then leading to some kind of aftermath.

Maybe try a few passes with the traction control turned off and see what happens?

I usually disable traction control anytime I plan on "joy riding" so been off when the issue presents itself.

There's really now way to completely turn off the traction control unless yo have the performance package SHO. I don't believe that feature was available on the MKS.
When I go to the track it still kicks in even when "off"


Sent from my iPad using Tapatalk

[glock-coma]

Also a flashing cel usually means the engine is cutting fuel to save the catalytic converters from damage. So you could have a bad fuel injector.


Sent from my iPad using Tapatalk

[TX MKS-T]

Also a flashing cel usually means the engine is cutting fuel to save the catalytic converters from damage. So you could have a bad fuel injector.


Sent from my iPad using Tapatalk

Im thinking you got it. I swear everytime I unlock my car after its sits I can hear what sounds like the fuel pump priming in the rear unless this is the norm but to me it sounds exactly like a fuel pump prime.

[glock-coma]

That is the fuel pump and its normal.

[SHOdded]

I think the fuel pump priming runs off the dome light activation circuit, which would be the case with unlocking the car.

[TX MKS-T]

Darn oh well back to the drawing board !

On a side note my MPG has been a decent 20 mixed city driving since I have been taking it easy on her.

[SHOdded]

Good mpg

[FaSSt9602]

I've been battling a similar issue in my wife's 2010 Flex, although ours is MUCH more random.  It happens about once a month, maybe longer. 

Her's has done it twice rolling up to a red light, once rolling up to the end of our street, and once (my main cause for concern) driving down the interstate on a very windy downhill section.  Car will shudder very similar to the F-150 videos I have seen with the condensation issue, CEL will flash and the car has no power.  It will do this for about 10-15 second, return to normal, CEL will go away, and stores no codes.

[SHOdded]

Any buildup in the IC?  Have you checked to see if the knock sensor wires may be the source of the problem?

[FaSSt9602]

Haven't pulled the piping or IC yet, but yes, there has to be something.  I have oil residue on the OUTSIDE of the charge pipe heading to the TB.

[sholxgt]

I cleaned out my IC when I first bought the car.  At 27,000 miles there was already some build up.  Not a bunch, but enough to convince me that it needs to be checked every few oil changes and cleaned as needed.