I don't believe that there is any evidence that cold has a direct effect on the pump. Instead, it's the use of salt in places that get cold in the winter that appears to be the problem. If mere cold were an issue, then pumps would have been dying as quickly in previous Evos, but that doesn't seem to be true. Rather, Evos that have their pump in a location that doesn't spend the entire winter covered in salt have not had our problem. Also, Evos in countries that don't use salt haven't had as much of a problem as we have.

Yes, a dying pump is more likely to cease working when the fluid is cold, but it isn't the cold that causes the problem.

 

Add me to the list 2010 GSR 18k miles just out side the 3 year warranty....

 

Please add yourself: https://www.evolutionm.net/forums/ev...e-reports.html

Or was the "list" in your post meant to be metaphorical?

 

It was metaphorical but I'm adding myself to the list

 

Just an update...have my car fixed and rolling. Have taken her for a few test drives and the reflash seems to be holding up...no codes as of now...if it does come back ill pull the pump and report my findings.

 

Yeah, the cold isn't going to do much to the pump itself, just the fluid (which will then mess with the pump).

We sand our roads here, aside from being exposed to other elements like water and cold, salt has never really been an issue here.

I had a small scare last night. It dipped to -12C (which is about what, 10F?) , which isn't really that cold, but still one of the chilliest evenings of the year so far.

Normally I'd let my car warm up a bit but I let it run for about 3-4 minutes and took off toward a friend's house. 2 blocks away the car signaled "4WD system service required", I got my my destination a few minutes later and checked, there was a C161e code (ACD selection disappeared)

I turned the car off, turned in on again, ACD selection returned, took off toward walmart, a block away from the house and it threw the code again and ACD selection disappeared.

The next 2 start/stops of the evening didn't have any issues and same with my drive to work this morning. Pretty sure the drop in temps is buggering up the fluid.

I didn't have any issues last winter but if it's doing this already I have not much faith when we see -30/-40 temps...

I'm probably going to disconnect the pump. My dealer doesn't have the best rep for warranty, I 'm leaning 60/40 they wouldn't take the time of day to look at it. My CD player buggered up within the bumper-to-bumper and I never heard anything back from them about it.

 

You are getting the classic symptoms of a pump that is somewhat corroded inside. It won't make pressure within the time limit when the fluid is cold and thick, but sometimes succeeds when it is warmed up and thinner. Note, however, that even when it succeeds, if you actually ask the ACD or AYC to do some work, there's a good chance it will fail to get the pressure back up and fail then. Upshot: even if not dead-dead (in the Princess Bride sense), it's close enough to dead to be considered dead.

My pump went about two months in your current state. Then it was dead-dead.

If you're not going to the dealer in the Quixotic hope of warranty service, then remove the pump ASAP and at least shoot it with Corrosion-X now. Then either take it apart or send it to Matt (ACD Tuning) or Blaze or the Canadian equivalent. If you pull it now, there's a chance it can be saved. If you leave it in, the corrosion will get worse and you risk killing the motor.

 

I'll be looking at doing some winterizing next week (hopefully, new brakes all around, winter tire change over, installing stock airbox/recirc and flashing stock tune) - if I can get enough time in I'll look at removing it for winter. May as well looking at rebuilding, there will be no shortage of time to do it once the snow's on the ground.

I'm leaning to dropping by and visiting the dealer to see what they say about it. There was a guy with an '11 MR that had the ACD itself wear out this summer. Hopefully the idea of the pump failing isn't too foreign of a concept.

And to think I was looking at this about a week ago too...

 

Mine just went, 08 GSR 48,650 mileage. Very disappointed about this. I will register ASAP.
Here in Michigan we just started with some coltish weather. I knew something was wrong when I was turning left in the wet and the car spun all wheels and "pushed or understeered" while not turning... It sounds like there are a number of things that could prevent this critical failure from happening: fluid heater, trunk mount, "bag-it", thinner fluid, splash guard, better seals and or corrosion prevention, etc...

 

2008 GSR ... 50,800 Miles ... ACD Codes C161E & C2100. Dealer says ACD pump to the tune of $1995. Regional manager told me tough luck they wont cover it under power train.

 

any new updates from auto torque. Would like to purchase by spring so I could install it before the next winter. This current winter is very rough in chicago this year :/

 

Just filed a complaint. Mine failed at 48,500 miles

 

I've thrown the following codes since my last post in this topic in October,

C161E, C161F, and C1219

The damn thing still seems to be working fine... I get the 4WD system service required message intermittently (during our -25 to -45 cold snaps, fine in "warmer" weather). If I turn the car off and turn it back on again, usually everything resets/works without a problem.

I never got around to unplugging the pump. Waiting for the damned thing to pooch at any moment, now.

 

FInally you can add me to the list of this exclusive EXPENSIVE club...mine went this month. I have 106,000 miles on mine. Waited at the stealership for almost 5 hours for them to tell me the brand new pump was bad too. So now i'm waiting for another pump to arrive. Thanks Mitsubishi.

FYI: Pump went after that first snow storm. I bought this car because it handles well in bad weather, wouldn't have bought it if knew the one thing that's great about it will eventually fail....and cost a lot to fix!!

2008 EvoX GSR

 

My ACD pump finally failed this month
2008 X MR 57,000 miles
Its my daily driver and yes they salt the roads every winter

Took the pump out today, here are some pictures


photo storage


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imgur