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Re: Need EV BatMon Help in North Central New Jersey

Posted: Sun Feb 25, 2018 9:28 am
by Mievo
Well posters,

My iMiEV is now at a dealer, not for the afformentioned issue; but an entirely new one. Today my gearbox seized in the rain on a very busy commercial highway just before a junction; to illustrate the conditions. We'll see what the prognosis is, the differential was steaming/smoking when I got out to look.

I have heard in the last week or two a whine, but attributed that to when New Jersey actaully paves roads, they are very smooth. Very suddenly in the middle of a 15 mile trip, the whine got progressively louder. Then came the turtle. Once the car stopped, power was applied, but no axle rotation came. I am on a train to work luckily, I'll find out the damage tomorrow; Monday Feb 25th.

Seized Gearbox

Posted: Sun Feb 25, 2018 10:11 am
by JoeS
Mievo, I created a new thread and moved your post over here. I believe this is the first time we have heard of a gearbox problem with the i-MiEV. Lost oil?

Sad to say, I'm very pessimistic about the cost to repair...

Curious as to why turtle came on, as that should be unrelated. How many bars on your fuel gauge and what was your RR?

Re: Seized Gearbox

Posted: Sun Feb 25, 2018 11:03 am
by Phximiev
JoeS wrote:Sad to say, I'm very pessimistic about the cost to repair...


As suggested in the AC compressor problem from another thread, just wondered if the part could be preserved with the notion of investigating its capacity to be remanufactured, or replaced with another car's diff?

See, e.g., https://www.jasperengines.com

But there are others out there also doing remanufactured parts. If the part can be preserved, then I suggest that we explore the remanufacturing options, which would in the long run, benefit all of us.

Re: Seized Gearbox

Posted: Sun Feb 25, 2018 12:26 pm
by Don
Phximiev wrote:But there are others out there also doing remanufactured parts. If the part can be preserved, then I suggest that we explore the remanufacturing options, which would in the long run, benefit all of us.
I suspect we're going to find that a bad seal caused the gearbox to gradually lose all it's oil and that caused the seizure - A very unusual and rare failure. Not very likely anyone is going to want to set up a remanufacturing option for a rare part of a very limited production car - This is the opposite end of the spectrum from say, remanufacturing Delco Alternators :lol:

I'm guessing Mievo's car is probably not parked in a garage?? If it was, a small puddle of oil under the rear of the car would probably have given him some warning something was amiss

Don

Re: Seized Gearbox

Posted: Sun Feb 25, 2018 6:37 pm
by Aerowhatt
Interesting and tragic!

I'm guessing turtle came on because the drive was going through power like crazy just to keep it rolling. All that heat making steam and smoke was converted traction battery power.

If it is a lubrication issue, it wouldn't leave much of a mess parked on dirt or gravel. Only 0.76 Quart to fill the unit!

Aerowhatt

Re: Seized Gearbox

Posted: Mon Feb 26, 2018 1:35 pm
by siai47
I was just at my old I-MiEV dealer and talked to the owner about the I-MiEV I sold him for parts. He says he still has the gearbox assmebly. I don't know what he wants for it but it only had 600 miles on it when the car was in a wreck. If you look at some of my old posts, you will see some pictures of the gearbox when I opened it up to look inside.

The dealer is R.C. Hill Mitsubishi in DeLand Florida. Their parts department should have a list of what parts they have and could give you a decent price on it vs. overhauling yours or finding a donor car. Good luck with your car.

Re: Seized Gearbox

Posted: Mon Feb 26, 2018 5:01 pm
by jray3
Wow indeed. At least it's a pretty straightforward swap to replace. I'd be inclined to go with an entire drive assembly (motor, gearbox and inverter) from a lower mileage wreck. Then you can sell that motor and inverter to someone who wants an ac-powered conversion!

Re: Seized Gearbox

Posted: Wed Feb 28, 2018 3:36 am
by kiev
i've repaired a few manual trans over the years and the miev would be easy. Usually the axial shaft load from the helical-cut gears wears out the bearings over time and a lack of lube would accelerate that process. Radial bearings not really intended to carry much axial load.

Image

Re: Seized Gearbox

Posted: Tue Mar 20, 2018 9:22 am
by seismic
I've recently bought a 2012 i-miev with 48,000 km on the clock. I bought the car without seeing it as a bit of a gamble as the price was (too) good. I've been pleased overall, apart that is from an ominous leak from the gearbox where the driveshaft to the left wheel emerges. I've added about 450ml of fancy Mitsubishi oil to at least hopefully avoid it running dry while I consider my options. Has anyone changed this seal to know how straightforward it is and which parts are needed?

Re: Seized Gearbox

Posted: Tue Jul 10, 2018 4:59 am
by CZero
Hi seismic + others
How did you solve the leaking driveshaft-differential-gearbox?
I just purchased a used C-Zero and the seller “forgot” to tell me the gearbox is leaking in the same way as yours. Now I will do as you-refill and consider the costs of replacing the seal.
Your experiences/ expenses fixing this would be greatly appriciated. Thanks