Motor Mounts

[Ddizzler]

Hi all,
Wondering if anyone knows much about the motor mounts? I have a 2017 AWD 2.7 liter Reserve. Recently my wrench light would come on under "heavy" acceleration, high rpm instances. Once I shut the car off the wrench light was gone, but engine light persist. Dealer diagnosed motor mount and turbo dump solenoid. I'm curious about the motor mount because he mentioned replacing with a mechanical motor mount. Seems I had read somewhere where maybe the motor mounts were electronic?? Not sure, just looking for some info on how the motor mounts work and if there was a change over? Also, just a side note, my full warranty expired in November, still have drivetrain warranty. Turns out the motor mount is covered under warranty but the turbo dump solenoid is not. Seems the solenoid would be part of the drivetrain?? Any input is appreciated.
Thanks!

 

[Town]

Hi all,
Wondering if anyone knows much about the motor mounts? I have a 2017 AWD 2.7 liter Reserve. Recently my wrench light would come on under "heavy" acceleration, high rpm instances. Once I shut the car off the wrench light was gone, but engine light persist. Dealer diagnosed motor mount and turbo dump solenoid. I'm curious about the motor mount because he mentioned replacing with a mechanical motor mount. Seems I had read somewhere where maybe the motor mounts were electronic?? Not sure, just looking for some info on how the motor mounts work and if there was a change over? Also, just a side note, my full warranty expired in November, still have drivetrain warranty. Turns out the motor mount is covered under warranty but the turbo dump solenoid is not. Seems the solenoid would be part of the drivetrain?? Any input is appreciated.
Thanks!

If you can obtain the engine check light code, that would be helpful. There is one engine mount that has 2 electrical contacts and is very large with many bolts, I think it includes a hydraulic feature that may be acted upon by the electrical circuit. There is an Auto trans mount that appears normal. There is also an alignment procedure. I will get you as much info as I can find later.

 

[MarkX]

I think it includes a hydraulic feature that may be acted upon by the electrical circuit.

Are you saying that the engine mounts are not just passive but variable and and activated by the CPU?

 

[Town]

Are you saying that the engine mounts are not just passive but variable and and activated by the CPU?

Just one engine mount and it is special. I have to do more research to know how it works, but i think along the lines of the Continental suspension dampers, module controlled hydraulics. There is another transmission mount that is just a complex rubber unit. I need the DTC that occured with the problem. The wrench indicator is also important and can be retrieved.

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[Ddizzler]

If you can obtain the engine check light code, that would be helpful. There is one engine mount that has 2 electrical contacts and is very large with many bolts, I think it includes a hydraulic feature that may be acted upon by the electrical circuit. There is an Auto trans mount that appears normal. There is also an alignment procedure. I will get you as much info as I can find later.

Town,
Thanks for the help, see picture below for codes.

 

[Town]

Hydraulic engine mounts have been around for a long time. The purpose is to better control engine movement and absorb vibration. They were mounted low like a normal mount but it appears the high mount of the Continental provides better control. Usually there is a means of varying the volume of "oil" to manage the stiffness of the mount. Some use engine load vacuum, the Continental uses electrical signals, but I have yet to find the module responsible. I don't think it makes sense to replace the hydraulic engine mount with a solid rubber one. I have the replacement procedure if required. There is also an alignment procedure if required.

I think the "Turbo dump solenoid" is called the "Turbocharger Wastegate Regulating Valve Solenoid" if so then the turbo charger control system is unable to correctly control turbo pressure and excess pressure may be the cause of the extreme warning "wrench" display. The DTC would provide specific problem information. Here is a description of it that is from the PC/ED manual (knowing the DTC would confirm this):

Gasoline Engines PCED
Turbocharger Wastegate Regulating Valve Solenoid


The turbocharger wastegate regulating valve solenoid allows the PCM to control the turbocharger wastegate position. The turbocharger wastegate regulating valve solenoid controls the pressure or vacuum supplied to the pneumatically actuated wastegate diaphragm in order to control the boost pressure limit. When the compressor outlet pressure increases, a pneumatically powered actuator opens the turbocharger wastegate and limits the compressor outlet pressure. The turbocharger wastegate regulating valve solenoid supplies pressure or vacuum to the pneumatically actuated wastegate canister diaphragm, which regulates the boost pressure to the desired value.


For the pressure actuated turbocharger wastegate, the turbocharger wastegate regulating valve solenoid controls the pressure applied to the turbocharger wastegate actuator. The amount of pressure vented from the pneumatic turbocharger wastegate actuator allows the PCM to control boost pressure. To generate maximum boost pressure, the PCM controls the turbocharger wastegate regulating valve solenoid to completely vent the pressure being applied to the turbocharger wastegate actuator. If a concern is present, the spring pressure in the pneumatic turbocharger wastegate actuator defaults the turbocharger wastegate to a fully closed position.


For the vacuum actuated turbocharger wastegate, the turbocharger wastegate regulating valve solenoid controls vacuum applied to the turbocharger wastegate actuator. The amount of vacuum applied to the turbocharger wastegate actuator allows the PCM to control the boost pressure. To generate maximum boost pressure, the PCM controls the turbocharger wastegate regulating valve solenoid to apply full vacuum to the turbocharger wastegate actuator. If a concern is present, the spring pressure in the pneumatic turbocharger wastegate actuator defaults the turbocharger wastegate to a fully open position.

 

[Town]

Town,
Thanks for the help, see picture below for codes.

So the engine mount DTC P0A14-00 is not a current DTC and can be ignored. The description of DTC P0A14-00 is shown below. Your wastegate is vacuum controlled and normally closed. So the underboost condition may be from a vacuum line disconnect or damaged line. Since the code is "Pending" the PCM is looking for another condition to be met before displaying a full DTC. The condition may be a second occurrence of the problem. If you have a code reader then you can check if the code is made permanent. If you want to do more diagnostics on your own then I will try to find some info. The pinpoint test "HN" does not provide much info, mainly the types of systems for each model.

Gasoline Engines PCED
P0299 - Turbocharger/Supercharger A Underboost Condition

Description: ​	This DTC sets when the actual TCBP value is less than the desired TCBP value by 27.6 kPa (4 psi) or more for 5 seconds, indicating an under boost condition.​
Possible Causes: ​	Damaged turbocharger (Town Car) wastegate regulating valve solenoid Town Car wastegate regulating solenoid valve stuck Wastegate stuck open Wastegate control hose open or plugged Air leak between turbocharger and throttle
Diagnostic Aids: ​	Check tubing for restrictions, cracks and incorrect fitting connections. Check the turbocharger wastegate regulating valve solenoid for correct operation.​
Application ​	​	Key On Engine Off ​	Key On Engine Running ​	Continuous Memory ​
All​	​	GO to Pinpoint Test HN .​

 

[Ddizzler]

Hydraulic engine mounts have been around for a long time. The purpose is to better control engine movement and absorb vibration. They were mounted low like a normal mount but it appears the high mount of the Continental provides better control. Usually there is a means of varying the volume of "oil" to manage the stiffness of the mount. Some use engine load vacuum, the Continental uses electrical signals, but I have yet to find the module responsible. I don't think it makes sense to replace the hydraulic engine mount with a solid rubber one. I have the replacement procedure if required. There is also an alignment procedure if required.

I think the "Turbo dump solenoid" is called the "Turbocharger Wastegate Regulating Valve Solenoid" if so then the turbo charger control system is unable to correctly control turbo pressure and excess pressure may be the cause of the extreme warning "wrench" display. The DTC would provide specific problem information. Here is a description of it that is from the PC/ED manual (knowing the DTC would confirm this):

Gasoline Engines PCED
Turbocharger Wastegate Regulating Valve Solenoid


The turbocharger wastegate regulating valve solenoid allows the PCM to control the turbocharger wastegate position. The turbocharger wastegate regulating valve solenoid controls the pressure or vacuum supplied to the pneumatically actuated wastegate diaphragm in order to control the boost pressure limit. When the compressor outlet pressure increases, a pneumatically powered actuator opens the turbocharger wastegate and limits the compressor outlet pressure. The turbocharger wastegate regulating valve solenoid supplies pressure or vacuum to the pneumatically actuated wastegate canister diaphragm, which regulates the boost pressure to the desired value.


For the pressure actuated turbocharger wastegate, the turbocharger wastegate regulating valve solenoid controls the pressure applied to the turbocharger wastegate actuator. The amount of pressure vented from the pneumatic turbocharger wastegate actuator allows the PCM to control boost pressure. To generate maximum boost pressure, the PCM controls the turbocharger wastegate regulating valve solenoid to completely vent the pressure being applied to the turbocharger wastegate actuator. If a concern is present, the spring pressure in the pneumatic turbocharger wastegate actuator defaults the turbocharger wastegate to a fully closed position.


For the vacuum actuated turbocharger wastegate, the turbocharger wastegate regulating valve solenoid controls vacuum applied to the turbocharger wastegate actuator. The amount of vacuum applied to the turbocharger wastegate actuator allows the PCM to control the boost pressure. To generate maximum boost pressure, the PCM controls the turbocharger wastegate regulating valve solenoid to apply full vacuum to the turbocharger wastegate actuator. If a concern is present, the spring pressure in the pneumatic turbocharger wastegate actuator defaults the turbocharger wastegate to a fully open position.

Thanks again for the info. Just spoke to my contact at the dealership. Still waiting on parts, been about 3 weeks and still driving car. My advisor told me the new motor mount is mechanical instead of electrical but couldn't give me any other details. He said Lincoln has "updated" this motor mount to mechanical. Seems maybe this has been an issue??

He told me it was ok to drive the car until the parts came in, wondering your thoughts on this?

Still funny to me that the motor mount would be covered under powertrain warranty but turbo solenoid isn't?

______________________________

Help support this site so it can continue supporting you!

 

[Town]

Attached are the main pdf documents related to your turbo wastegate problem. I can get more of the supporting procedures if you want them.

 

[Town]

Thanks again for the info. Just spoke to my contact at the dealership. Still waiting on parts, been about 3 weeks and still driving car. My advisor told me the new motor mount is mechanical instead of electrical but couldn't give me any other details. He said Lincoln has "updated" this motor mount to mechanical. Seems maybe this has been an issue??

He told me it was ok to drive the car until the parts came in, wondering your thoughts on this?

Still funny to me that the motor mount would be covered under powertrain warranty but turbo solenoid isn't?

The 2017 Continental motor mount has electrical connectors. Attached is the procedure to replace the mount, showing the connectors, and the neutralising procedure for the hydraulic motor mount neutral position. As you can see the mount is an encased unit on the right side of engine (driver perspective) and not at all like a rubber mount. I do not know about any changes in later models.

 

[JKBossman]

The 2017 Continental motor mount has electrical connectors. Attached is the procedure to replace the mount, showing the connectors, and the neutralising procedure for the hydraulic motor mount neutral position. As you can see the mount is an encased unit on the right side of engine (driver perspective) and not at all like a rubber mount. I do not know about any changes in later models.

Do you happen to have this for the 3.0?