Hybrid Rough Idle (Video)

[CuddleMuffin]

Started the truck with key (NOT remote start) with a temperature of 1 degree (F). No issues starting up, but then had a rough idle, sounding weird.
Picked up my Hybrid 2 weeks ago and it currently has 185 miles on it (got COVID).


Normal? Break-in period? Thoughts?

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[Sjbuck2021]

It's surging...lack of fuel?

 

[jeffrol48197]

This sounds just like all the other threads talking about a hybrid surging idle, but they all talk about a really bad smell? Did you smell a bad odor when this occurred?

 

[CuddleMuffin]

It's surging...lack of fuel?

It's at half a tank...

 

[CuddleMuffin]

This sounds just like all the other threads talking about a hybrid surging idle, but they all talk about a really bad smell? Did you smell a bad odor when this occurred?

It didnt this time (or at least, i didnt notice), but i have smelled both rotten eggs and was seemed to be burning plastic.

 

[jeffrol48197]

It didnt this time (or at least, i didnt notice), but i have smelled both rotten eggs and was seemed to be burning plastic.

Anyone who experiences this needs to report to their dealer so they can report it to Ford - I expect Ford will have someone work on some sort of update for pcm or other module to address this concern...

 

[casanewt]

Thanks for getting a good video of the revving sounds. Seems like this is more than just a remote start issue and could be temperature related or just related to warming the truck up for a bit. @Ford Motor Company

 

[Decayed]

Did it run normally once it warmed up? It doesn't sound rough in the video to me, it just sounds like it's surging.

Do you have an obd scanner? Did it throw any codes?

 

[CuddleMuffin]

Did it run normally once it warmed up? It doesn't sound rough in the video to me, it just sounds like it's surging.

Do you have an obd scanner? Did it throw any codes?

No scanner. Nothing abnormal on the dash.

 

[Decayed]

No scanner. Nothing abnormal on the dash.

Did it run better when it warmed up? Did it run better if you shut it off and restarted it?

 

[CuddleMuffin]

Did it run better when it warmed up? Did it run better if you shut it off and restarted it?

It seemed to run fine will driving.

 

[casanewt]

The debate about whether or not there is an additional electric heating element in the Maverick has gone round and round, but the post below is intriguing. Could the smell be the element operating for the first time?

https://www.mavericktruckclub.com/forum/threads/hybrid-heater-performance.6932/post-165839

From section 412-03, "Supplementary Climate Control", of the 2022 Maverick service manual:

"Electric Booster Heater Operation

The electric booster heater ensures that the passenger compartment can be quickly warmed up when ambient temperatures are low. It is a heater element made up of ceramic resistors that is mounted in the climate control housing. It directly heats the airflow into the passenger compartment rapidly in the case of low ambient temperatures.

The current is switched via three electric booster heater relays located in the BJB/ BCMC. The HVAC module sends a request message over the MS-CAN network to the GWM. The BCMC receives a network message over the HS-CAN1 requesting to apply power and ground to energize the relays. The electric booster heater is supplied voltage from the relays and has a dedicated ground circuit.

The HVAC control module energizes the electric booster heater relays when the operating parameters have been met. The electric booster heater relays are activated or deactivated individually or together by the HVAC control module as needed.

Electric booster heater operating parameters:

-Engine is running
-HVAC controls have been switched to the highest temperature setting
-Engine coolant temperature is below approximately 75°C (167°F)
-Ambient air temperature is below approximately 12°C (53.6°F)
-Sufficient generator capacity is available

The electric booster heater is deactivated when an engine coolant temperature of approximately 85°C (185°F) or an ambient air temperature of approximately 15°C (59°F) is exceeded.

Component Description

The electric booster heater, also known as the PTC heater, is made up of three separate ceramic resistor elements."

 

[CuddleMuffin]

The debate about whether or not there is a additional electric heating element in the Maverick has gone round and round, but the post below is intriguing. Could the smell be the element operating for the first time?

https://www.mavericktruckclub.com/forum/threads/hybrid-heater-performance.6932/post-165839

Interesting. This might be the reason for the burning smell. It goes away quickly and seems to be on the cold starts. Not sure that it would explain the "surging".

Thanks for the link!

 

[MakinDoForNow]

The debate about whether or not there is an additional electric heating element in the Maverick has gone round and round, but the post below is intriguing. Could the smell be the element operating for the first time?

https://www.mavericktruckclub.com/forum/threads/hybrid-heater-performance.6932/post-165839

From section 412-03, "Supplementary Climate Control", of the 2022 Maverick service manual:

"Electric Booster Heater Operation

The electric booster heater ensures that the passenger compartment can be quickly warmed up when ambient temperatures are low. It is a heater element made up of ceramic resistors that is mounted in the climate control housing. It directly heats the airflow into the passenger compartment rapidly in the case of low ambient temperatures.

The current is switched via three electric booster heater relays located in the BJB/ BCMC. The HVAC module sends a request message over the MS-CAN network to the GWM. The BCMC receives a network message over the HS-CAN1 requesting to apply power and ground to energize the relays. The electric booster heater is supplied voltage from the relays and has a dedicated ground circuit.

The HVAC control module energizes the electric booster heater relays when the operating parameters have been met. The electric booster heater relays are activated or deactivated individually or together by the HVAC control module as needed.

Electric booster heater operating parameters:

-Engine is running
-HVAC controls have been switched to the highest temperature setting
-Engine coolant temperature is below approximately 75°C (167°F)
-Ambient air temperature is below approximately 12°C (53.6°F)
-Sufficient generator capacity is available

The electric booster heater is deactivated when an engine coolant temperature of approximately 85°C (185°F) or an ambient air temperature of approximately 15°C (59°F) is exceeded.

Component Description

The electric booster heater, also known as the PTC heater, is made up of three separate ceramic resistor elements."

Maybe the surging is caused by the PTC trying to "kick in"? Try turning the cabin heater off and see if surging stops?? I would imagine most electric power is being used to heat battery and their may not be enough to continually operate the PTC and when it kicks in the power level drops and the PTC is turned off. If so a program change could cure problem. Also at that temperature I would expect the HVB battery might have priority on generated current. If you have the block heater try it in the morning (how long ?? Could put cord to it on a timer??). The surging could be caused by too slow idle and too large a draw on generator. That sucker could suck up a lot of horses!

 

[MakinDoForNow]

Maybe the surging is caused by the PTC trying to "kick in"? Try turning the cabin heater off and see if surging stops?? I would imagine most electric power is being used to heat battery and their may not be enough to continually operate the PTC and when it kicks in the power level drops and the PTC is turned off. If so a program change could cure problem. Also at that temperature I would expect the HVB battery might have priority on generated current. If you have the block heater try it in the morning (how long ?? Could put cord to it on a timer??). The surging could be caused by too slow idle and too large a draw on generator. That sucker could suck up a lot of horses!

After thought ... How long should ice warm up BEFORE the computer asks generator to provide a heavy load? 2-3-4-? Minutes??

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