I have an appointment with the dealer first thing Friday morning. I expect them to pay for it all under warranty since it has a 10year/100K drivetrain warranty; just like they did for the wheel bearing.

I'll keep you posted.

 

Aren't Evos only warrantied for 3years/36k miles?

 

New Evos only have 3year/36K but back in 2006, they had a 5yr/60K bumper-to-bumper and a 10yr/100K drivetrain warranty. Probably only applies to original owners.

 

Aah, thanks for the clarification.

 

Hopefully you can get some sort of resolution that can be helpful for all of us with this problem.

 

It's a well-known problem already. The ACD pump tends to take a dump due to corrosion getting inside it.

 

= Heart attack..

 

Well, as expected my ACD hydraulic pump is bad. $2400 for parts & labor. It was covered under the basic 5yr/60K warranty (which is over now), not the 10yr/100K powertrain warranty for some reason. They printed off a copy of what was/wasn't covered by each warranty and the ACD pump is specifically listed as covered by the 5yr/60K warranty. I had the dealer give me a Mitsu number to call to ask why it isn't covered by the powertrain warranty and the lady just said that only parts that provide power are covered ("like the engine and transmission"). So, I said that sounded weird since they just covered my wheel bearing under the same warranty. She looked it up and said, yep, that is covered by the powertrain warranty but gave no reason why it would be but the ACD pump wasn't. It sounds to me like they picked and choosed what would/wouldn't be covered for whatever reason back when the car was made.

So, I asked them what was the worst that would happened if I didn't fix it since I barely used it anyway and didn't notice any real difference when I did. The tech said that it would just not change modes. In other words, it would be stuck in whatever mode was last selected. Is that what others with this issue have found?

 

Your other option rather than buy a new pump is to rebuild your existing pump. It's definitely an expensive part to replace if you don't have to.

 

That is incorrect unfortunately. A faulty pump means that your center diff no longer has locking capabilities and is now constantly an open diff. If you are just dd'ing your car you will not notice a difference however if you drive it like you stole it, it will certainly make a difference.

 

^Exactly this.

 

as others have said, you with no ACD pump you are running with a open centre diff.
My suggestion is to have the pump overhauled and protected properly, and you want to do it sooner rather than later, to prevent further corrosion to the solenoid.

 

I had read that somewhere and wanted to confirm. Thanks for the info. Are these guys the only ones doing rebuilds in the US? Does anyone know if this will permanently fix the issue or will I be looking at this issue in another 7 years unless I relocate it to the trunk?

 

I believe they're the only ones that offer the pump rebuild kits. If you rebuild your pump, I would probably silicone any gaps after the pump is assembled especially if your going to be driving your car in the winter time.

 

From Mathew at ACD-Tuning.com:

The kit fixes and replaces all the parts that usually get damaged with higher quality parts. And yes, I seal the pump with the same sealant that Audi uses to mate their aluminum engine blocks- very good and expensive stuff. Not some crappy autozone rtv...

Sounds like they've got it all figured out.