Hybrid Shudder. Anyone experiencing a shudder shake in hybrid

[Ford Motor Company]

Mik, i second your diagnosis, this is what mine does, but didnt do this new up to about 5000m, was fine.

Mine appears to be getting worse, its not the brakes, not software related.

Mine i still say is the damper out of round/balance or the lining is gone.

I am going to take mine in after air curtain module recall, i will not take(could not duplicate, dont know how to fix)deal. I will take dealer for ride and show him..

Hey there! I can look into your Maverick’s vibration concerns on my end if you’d like. Will you send us a private message with your VIN and dealership info?

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[Mach 1]

Ok, driving today, i got a slippage/shudder while accelerating, kind of surprised me. So now i have noticed while deacceleration and accelerating mine shudders, yeah its getting worse and makes me cringes.

I was playing with the AC to see if it effects shudder on deacceleration, it seemed like they could be connected, need more time behind wheel.

 

[2FordOrNot2]

Yes, upon deceleration / braking at low speeds from about 30mph and shuddered until 0mph. Happened only maybe 3 times including once last week at 7k+ miles.

 

[Ford Motor Company]

Yes, upon deceleration / braking at low speeds from about 30mph and shuddered until 0mph. Happened only maybe 3 times including once last week at 7k+ miles.

Hi there! Will you send us a message with your VIN and your local Ford dealer? I can look into things on my end.

 

[Mach 1]

2ford, thats it, you have it.

 

[canyonero]

Mine does this as well. Usually after first startup in the morning, as I go up a small hill. My guess is the gas engine starting up under load or trying to run too lean for the load its seeing. I can avoid the problem by giving it more throttle over the hill than normal.

 

[Mach 1]

Please post if you had it all along or if it just showed up, mine showed up about 5000m.

It was great from the factory.

 

[Mikknj]

Oh wow, you have noticied that AC effects it, i need too look into it more.

If it were electric motor would something in there have changed/worn bushings/bearings, etc.?

The Damper is like a driveline clutch between the ICE and Hf45. Did you see the pics i posted. It justs makes more since to me that the damper or flywheel is defective, causing an out of balance/surface irregularities, like a clutch on a standard shift transmission, during a downshift.

I could be absolutely off base, in left field, it just makes sense with the way its wearing and the feel. There was another member on here that has had his replaced and it was pretty much described as such.

If its just driviability change it probably could be fixed with a flash, adjust a couple parameters.

If its a worn mechanical mechanism then replacement would be the only repair.

I also believe the symptoms the other members are seeing is probably the same failure/defect, thats another reason i am pointing to drive clutch.

What you have outlined as the damper makes a lot of intuitive sense. A mechanical answer to the problem that would fit the kind of vibration we are experiencing. My doubt lies in this - the way I baby the vehicle, the 43-50 MPG I get regularly, tells me that there's still great efficiency in the drive system. Any binding or wearing would cause friction and affect efficiency. Plus now that the weather is cooler the vibration is almost completely gone. Not to mention that the air conditioner is not doing much. Understanding something about how the motor generator controls the planetary gear set, I still bet that a sensor is feeding back into the motor generator causing an oscillation / resonance under ( Very Warm) conditions, And is definitely related to the Brake Regeneration system

 

[Mikknj]

Please post if you had it all along or if it just showed up, mine showed up about 5000m.

It was great from the factory.

That was my experience. I only noticed it at 4000 miles. Was perfect when new. And that is the mystery. This is why a mechanical answer seems most correct - like a warn bushing or damper. But at 4k miles that seems impossible ( wear) I mean ford tested these trucks for a long time. Think of how bad QA dept would have to be for a warn bushing defect to escaped their attention. Plus this same drivetrain has been used for 12 years and millions of miles. So Ford what's up?

 

[Mach 1]

Mik, this is exactly why i get on these boards, we are mature and intellectual enough where we can dissect these technical marvels. One of the best troubleshooting methodology is bouncing ideas off one another, taking all possibilities into account and then narrowing them down.

You bring up valid points, i don⁸t know for sure(dont know if anyone does), for sure what is defective. Yes, i also agree thats it seems to suggest mechanical wear and something has changed and caused out of balance or a seating problem. Its minor as far as efficiency goes, cause we havent lost any fuel economy or power loss.

You bring up good points on the HF45 being based on the HF35, which was bullet proof.
Something has changed in the hybrid drive design? to cause a failure or its the mechanical connection between the hybrid drive and ICE.(hence my guess on the damper).

The defect is not bad enough to cause any major driveline slippage to the effect of losing efficiency, but rather just enough whereas something slips enough to bother us for a minisec.(or this is what i am seeing). It seems like the damper has not failed completely yet(although total failure is in the future imho) but seems like it is slipping or shifting to a different position. Again the damper is my guess.

Now this doesnt mean that everyones damper is on the way out(although it could be) because theres a difference in the symptoms, wheres i am experiencing it deacceleration, more people are saying under acceleration. I just noticed my first one the other day.

Lets keep collecting facts, and do some more hypotheses on what it could be and we may get to the end of the road together. We may even be a little further along with what the problem is then like Ford.

 

[canyonero]

Please post if you had it all along or if it just showed up, mine showed up about 5000m.

It was great from the factory.

Since basically the beginning. Never drove a hybrid before so I assumed when the ICE kicks on it might be rough. Doesn't happen every day but I know to give it more throttle in the mornings.

 

[Mach 1]

Cany, thx for posting

 

[Mikknj]

Mik, this is exactly why i get on these boards, we are mature and intellectual enough where we can dissect these technical marvels. One of the best troubleshooting methodology is bouncing ideas off one another, taking all possibilities into account and then narrowing them down.

You bring up valid points, i don⁸t know for sure(dont know if anyone does), for sure what is defective. Yes, i also agree thats it seems to suggest mechanical wear and something has changed and caused out of balance or a seating problem. Its minor as far as efficiency goes, cause we havent lost any fuel economy or power loss.

You bring up good points on the HF45 being based on the HF35, which was bullet proof.
Something has changed in the hybrid drive design? to cause a failure or its the mechanical connection between the hybrid drive and ICE.(hence my guess on the damper).

The defect is not bad enough to cause any major driveline slippage to the effect of losing efficiency, but rather just enough whereas something slips enough to bother us for a minisec.(or this is what i am seeing). It seems like the damper has not failed completely yet(although total failure is in the future imho) but seems like it is slipping or shifting to a different position. Again the damper is my guess.

Now this doesnt mean that everyones damper is on the way out(although it could be) because theres a difference in the symptoms, wheres i am experiencing it deacceleration, more people are saying under acceleration. I just noticed my first one the other day.

Lets keep collecting facts, and do some more hypotheses on what it could be and we may get to the end of the road together. We may even be a little further along with what the problem is then like Ford.

Yes very interesting.
If others are correctly assessing that they get vibration on Acceleration as well as deceleration - that's quite interesting. That puts me in agreement with the damper.

Someday someone will get a fix and we will know what's going on. And I agree it's an annoyance. I'm too busy to take my truck in, lose access to it for a month or two. If we weren't in this worker shortage, supply shortage I would have taken it already. But I'm not going to right now.

 

[MDRN]

Having this similar problem to this but it is happening when I am sitting with the brake pedal on at a stop with the transmission in gear. As if the transmission is slipping causing a shudder, like when you just rock the clutch in a manual transmission. Also when moving at slow speeds, such as a 3 point turn, and I roll forward and stop, it is like the clutch was dropped or the calipers of the brakes seized, but the force you feel through the vehicle feels much more like the transmission along with the clunk sound I get.

The weather is less of a factor in mine. It's usually when it is cooled off and just started with the shudder. The hard slow speed clunk and lurch is both at cold and warmed up states.

Currently have 3,054 miles on it as of this post.

 

[Mikknj]

Hi

Having this similar problem to this but it is happening when I am sitting with the brake pedal on at a stop with the transmission in gear. As if the transmission is slipping causing a shudder, like when you just rock the clutch in a manual transmission. Also when moving at slow speeds, such as a 3 point turn, and I roll forward and stop, it is like the clutch was dropped or the calipers of the brakes seized, but the force you feel through the vehicle feels much more like the transmission along with the clunk sound I get.

The weather is less of a factor in mine. It's usually when it is cooled off and just started with the shudder. The hard slow speed clunk and lurch is both at cold and warmed up states.

Currently have 3,054 miles on it as of this post.

Hey MDRN, You know I'm glad you mentioned that because I have felt that as well. IT's not the same but I wonder if they are connected. It's the same type of oscillation as when braking - deceleration after a slight uphill and the engine cuts off. So when sitting with foot on the brake - mine was kind of surging a little bit back and forth. IT went completely away as soon as I put my foot down. I forgot about that - happened a couple times. IT's the same type of oscillation- Hmmmm

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