- 2003 Mini Cooper

GS5 Wrenching Mini Cooper Project

A little update on my latest project at GS5 Wrenching

3w ago
735

My most recent purchase and project at the shop is this 2003 Mini Cooper. When I got it there was a suspected bad throwout bearing as well as weird interior electrical issues. First step after getting it to the shop was to get the transmission out so that I could see when the growling noise coming from it was. This turned out to be a much bigger task that I thought!

My beautiful shop assistant working to remove the bumper

My beautiful shop assistant working to remove the bumper

I haven't worked on any front wheel drive transmissions so it was a bit of a surprise just how much you have to pull off just to access the transmission! The transmission removal was not a hard task but very time consuming.

Transmission out...along with half the car!

Transmission out...along with half the car!

Someone at the parts store had fun with this battery!

Someone at the parts store had fun with this battery!

Once I had removed the transmission I discovered the sound wasn't from the throwout bearing but instead was the input shaft bearing had failed. This allowed for play in the input shaft which then took out the input shaft seal. This allowed the transmission great oil to leak into the bellhousing causing the clutch to slip badly, completely gumming up the clutch and ruining it.

I was able to purchase all the needed parts to repair the transmission from minimania.com. These guys were a huge help! Awesome tech support, wealth of knowledge, and great selection of parts.

I was able to repair the transmission and reinstall it with a new clutch. The car now runs great and shifts very smoothly! This input shaft bearing failure is a common fail point on these Mini Coopers. If anyone is going to be repairing one and have any questions about the process please to reach out to me, I'll be happy to help where I can!

The next step for this project is the intermittent interior electrical issues. The heater/AC controls, sunroof, door locks, etc. don't work most of the time. I believe its the Body Control Module (BCM) which had gotten wet. Its located in the passenger footwell and there was a lot of moisture down there. I'm looking into options to fix that so stay tuned...

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