Hybrid Shudder. Anyone experiencing a shudder shake in hybrid

[Cubican]

Not at all to be honest I think is some Karen’s trying to get clicks to complain about a 20k truck, my trucks have being excellent and just order 10 more to replace the ones I have now.

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[Aza]

Not at all to be honest I think is some Karen’s trying to get clicks to complain about a 20k truck, my trucks have being excellent and just order 10 more to replace the ones I have now.

Thanks for replying! Great to hear they have been trouble-free!! How many miles do they have on them? Lots of new members here that need to hear some good examples too.

 

[Cubican]

Thanks for replying! Great to hear they have been trouble-free!! How many miles do they have on them? Lots of new members here that need to hear some good examples.

Let see 2 of them just hit 75k,and 81k today for the rest I’m approaching 250k between all of them and not a single problem all my employees love them, they can’t wait to get the new ones so they can buy the old ones.

 

[Buzzmiller]

Mik, are you a believer now, we are all feeling what is a damper problem, its causing ALL kinds of driveline shudders and out of balance conditions.

I say again, its going to be a very big deal.

Its a big deal to me, my Tranny failed last Friday 09/23/2022 i got the diagnoses this morning. I never had the shudder issue at all though.

 

[Mikknj]

..
These hybrids seem to have a mind of their own, don't they?
..

It's called a computer. ;-)

 

[DodgerFan76]

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..

Same here. Mine also began after 5k miles

 

[MakinDoForNow]

I agree with you - I'm still not convinced it has much to do with the damper. I was sitting in park with ignition on and the ICE came on to charge the battery - after 3 min it went off,.. when it shut down it was very rough shut down.. almost like a run-on car from the 1970s. I thought - hmm I wonder if that is the Shudder I am feeling. But even at that this didn't seem like the damper. More like the engine shut down was not smooth. Yet other times it smooth as silk shut down. I think this is part of the issue.

Been thinking about possibilities. This shudder or something similar happens under many apparent suspected conditions. @GPSMan has reported that at 60% soc of HVB the rate of charge is either greatly reduced (to 10-12%?) or stopped I don't remember which. In any case could this shudder possibly be related to the computer rapidly turning on and off the load on the MG1? Possibly caused by a bad sensor or bad ground (or possibly even a weak harness solder connection?) or even needing a tweak in program in the "time to turn on charging" routine? Could conceivably even set up damper slippage if gas supply to engine was not reduced at the appropriate time.

 

[GPSMan]

You may be on to something. Charging draws somewhere around 30 horsepower. This load going on and off rapidly could be a "shock" to the system. The big drop in charging comes at 70% in mine. Probably because they want to leave room for regen at stops and going downhill, plus it's hard on the batteries to go to high charge levels.

I'm pretty sure while unintentional and Ford did their best to avoid the shudder, it's not hurting anything.

 

[Mikknj]

Been thinking about possibilities. This shudder or something similar happens under many apparent suspected conditions. @GPSMan has reported that at 60% soc of HVB the rate of charge is either greatly reduced (to 10-12%?) or stopped I don't remember which. In any case could this shudder possibly be related to the computer rapidly turning on and off the load on the MG1? Possibly caused by a bad sensor or bad ground (or possibly even a weak harness solder connection?) or even needing a tweak in program in the "time to turn on charging" routine? Could conceivably even set up damper slippage if gas supply to engine was not reduced at the appropriate time.

Yes you are on to something - I believe it's related to as you say a computer input to the motor generator. I call this a harmonic that feeds back into the drive system. I substantiate that with the fact that the shudder is always at the same frequency. It is also probably related to the Damper spring rate. What I think I see here is literally a tuned (mechanical) resonant system. Certain things set it off. Breaking, accelerating to just the right RPM, ICE transition on and off. But what to do about it? Come on Ford engineers!

 

[mamboman777]

Saw this today... Made me think of this thread.

 

[MakinDoForNow]

@GPSMan Take a look at this new post concerning motor mounts diagnosed as failing roll restrictor. Could conceivably cause shudder?
Brake knocking issue (possible recall?)

• Thread starterZezeka
• Start dateYesterday at 11:29 PM
• Watchers1

 

[Webbee]

I never felt the shudder all summer but yesterday it did it again. I wonder if it could be a cold weather thing. Just wondering if anyone else noticed this?
11,000 km

 

[GPSMan]

Hybrids are different beasts with a host of different behaviors, sounds, vibrations, quirks. Some things a newbie will pick up on some old timers will consider status quo. I've not had mine very long. Still on first tank of free gas from the dealer. Not sure what is different and what isn't. I did order the technical service guides and hope to dive into those in a couple of weeks.

"Old timer who's had a handful of hybrids."

 

[NeedForSteve]

Mik, not only is the damper a set of springs, you are looking at what is commonly know as a mechanical clutch, there is a friction surface in there as well, theres a flywheel component as well. The bad thing is, to replace the clutch, the engine has to be removed from vehicle and the HF45 has to be seperated from the ICE. Big job.

Mach1, have you had one of these damper assemblies in-hand to inspect in person? I don't see anything in ALLDATA that indicates a clutch assembly. Looks more like an adaptation of a pressure plate, but with the output splines coupled directly to the spring assemblies instead of clutch discs. Ford has used a similar damper since 2013 with no issues I'm aware of.

I have always been aware of some shudder from the system during power transfers. It's been my understanding these sensations are considered normal by FMC

 

[Mav2]

Dog gone it My 1st ever issue is the shuttering upon taking off in eco mode doing 25 the truck shuttered so bad I hit my brakes as I thought I ran something over! So I Google the issue and came across this forum now time to read up!

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