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 Thermostat housing replacement

 Created by: Christyp
Orig. Posting Date User Name Edit Date
Mar 19, 2019 07:47AM JKlass  
Mar 19, 2019 03:55AM kenatminimania  
Mar 18, 2019 08:55AM JKlass  
Mar 18, 2019 05:33AM kenatminimania Edited: Mar 18, 2019 11:50AM 
Mar 15, 2019 09:24AM Christyp Edited: Mar 15, 2019 10:21AM 
Mar 15, 2019 06:56AM Spank  
Mar 15, 2019 04:27AM Christyp Edited: Mar 15, 2019 09:55AM 
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 Posted: Mar 19, 2019 07:47AM
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I have checked the codes....I don't have the specific code(s) off hand, but there were three codes all relating to the temp sensor malfunction.

I will try to get those today as I plan to run a diagnostic on it and I will post.

I did unplug the temp sensor in the elbow this morning on the way into work.  The fan was not running at the level that it had been (@ full bore) and appeared to be running at a  normal level when I stopped.  Also, the fan did not appear to be running like it was prior to me unplugging the sensor when I stopped at a traffic light, so this was a little promising.

As I mentioned, I am planning on running a diagnostic later today and I will attempt to clear the codes and see if they show up again.

Cheers.

 Posted: Mar 19, 2019 03:55AM
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Quote:
Originally Posted by JKlass
I just finished replacing this due to my engine overheating and thermostat sensor activation codes....it was a pain in the ass.

I was sent a thermostat that did not fit and had to return it for one that did...this newer thermostat worked and also required the sensor lead adapter.  However with the new install, I can't get the check engine light to turn off even after clearing all of the codes.  But, reading some of the thread, I didn't realize that the sensor in the elbow was no longer required (wish I knew that before I replaced it first).  Also, since I replaced the thermostat housing, it appears that the cooling fan runs hard and is working hard to cool the engine down, but it no longer overheats.  

I guess that I will try to unplug the temp sensor in the elbow and see what happens.

I don't know where you all planned on taking you car to get worked on for $585 because the dealership here in quoted us $1200-1500 for the repair, hence why I took it on.

Any info/guidance you all might have on my issue, please share.

Cheers
Let us know if anything changes after you unplug the old sensor in the elbow.

Have you checked the OBD port to see if any error codes are recorded in the car's computer?

 Posted: Mar 18, 2019 08:55AM
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I just finished replacing this due to my engine overheating and thermostat sensor activation codes....it was a pain in the ass.

I was sent a thermostat that did not fit and had to return it for one that did...this newer thermostat worked and also required the sensor lead adapter.  However with the new install, I can't get the check engine light to turn off even after clearing all of the codes.  But, reading some of the thread, I didn't realize that the sensor in the elbow was no longer required (wish I knew that before I replaced it first).  Also, since I replaced the thermostat housing, it appears that the cooling fan runs hard and is working hard to cool the engine down, but it no longer overheats.  

I guess that I will try to unplug the temp sensor in the elbow and see what happens.

I don't know where you all planned on taking you car to get worked on for $585 because the dealership here in quoted us $1200-1500 for the repair, hence why I took it on.

Any info/guidance you all might have on my issue, please share.

Cheers

 Posted: Mar 18, 2019 05:33AM
 Edited:  Mar 18, 2019 11:50AM
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Quote:
Originally Posted by Christyp
My mini 2012 coupe s r58 I got in Jan was leaking coolant  The  dealership said it was a leaking thermostat housing and would cost 585 bucks. My local part store ordered me one and it was the wrong one. So then they ordered one according the VIN # and thermostat adapter. My old one had removable thermostat
 Everything I read said adapter by passed the old thermostat. My question is what do I do with the old one that's still attached by wires? 
The thermostat is molded into the housing along with a couple sensors. Some of the housings have a sensor that you can remove and replace, but if you are dealing with a leak, you should replace the entire housing.

The early thermostat and sensors had some issues, so MINI has had a couple revisions which have slightly different electrical connections.  This is why wiring adapters are necessary for some replacements, depending on the vin number.  The adapters allow direct connection of the wiring harness to the updated thermostat housings.

On some models, there was a temp sensor in a 'alloy elbow' in one of the coolant hoses.  When upgrading to the newer thermostat housing, this sensor is eliminated / replaced by the sensors in the housing. So the wiring to this sensor can be left disconnected whether you leave this elbow/sensor in place or replace the hose with a newer version, eliminating the elbow and sensor.

edit: When ordering the thermostat housing from us, provide the last 7-digits of the vin number so we can confirm we get you the correct setup.

 Posted: Mar 15, 2019 09:24AM
 Edited:  Mar 15, 2019 10:21AM
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I have extended warranty but was told it didn't cover this. This car is really confusing me bc I can't find anything related to repairs on 2012 r58. My engine light came in and have a feeling it's due to by passed thermostat still attached by wires. 

 Posted: Mar 15, 2019 06:56AM
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I'm sorry I cannot help you with your specific question. My only experience changing a thermostat housing is with an 08 Clubman.

But what I came on here to say is IF there is a crossover pipe on your R58 (that plugs into the back of the thermostat housing and follows across the back of the motor and plugs into the water pump at the other end), you should consider replacing that at the same time. I followed some online instructions and video from youtube. But getting the old crossover tube out was not as easy (for me) as everyone makes it sound. I had to come at it from underneath the car.

I did a quick google search (because the whole R52, R53, R56, etc confuses me) and there looks to be some chatter about extended warranty on thermostat replacements for some cars...

 Posted: Mar 15, 2019 04:27AM
 Edited:  Mar 15, 2019 09:55AM
Total posts: 12
Last post: Mar 15, 2019
Member since:Jan 12, 2019
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My mini 2012 coupe s r58 I got in Jan was leaking coolant  The  dealership said it was a leaking thermostat housing and would cost 585 bucks. My local part store ordered me one and it was the wrong one. So then they ordered one according the VIN # and thermostat adapter. My old one had removable thermostat
 Everything I read said adapter by passed the old thermostat. My question is what do I do with the old one that's still attached by wires?