When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
2013 Paceman w/ 34k miles on it. Was getting the P0128 - Powertrain Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature ) so I ended up replacing the T-Stat assembly that had a new Sensor in it.
Now, the car gets heat, but seems to be too much?
I pulled the codes again when the SES light came back on, and it read P0597 - Powertrain.
**Addition: I clear the codes, and the P0597 immediately comes back...
I took the car out on the road and drove it around for a bit and the temps seemed to get really high. Reading on Torque, it was saying 240* which was when I pulled back into the driveway and let it cool down. I re-bled it and took it back out ( second time ) and still the temps seemed to climb really high to the 230 range to which being that I allowed it to warm up in the driveway beforehand to get to temp I was close when I saw that it was starting to get warm again.
Not sure what to look at, at this point. I did see that there seems to be a slow drain back into the reservoir, but it was not anything like I'd expect to see for a rig that should have been pushing coolant through the radiator.
Any thoughts and ideas would be great at this point.
Last edited by mcaanda; Dec 9, 2019 at 07:58 PM.
Reason: Added Info
Might just have air in the system from when you changed the stat.
Id maybe keep trying to burp it and see if you get lucky.
220 is pretty much normal so you are not far off.
Did your car have the old thermostat sensor location? If so did you update it to the one within the thermostat and leave the old unplugged?
I'll try to see again this afternoon if there's not more air in the system. I'm thinking its pretty bled out being that there's a steady stream of fluid coming out when I open the bleed valve and Im really tired of the damn mess its making so Im hoping its bled. I will try again tho.
to which I saw this - something additional to look into being that the code is instant on popping up when I turn the car on:
Originally Posted by McClubbin
Also, make sure all the connectors are on the correct sensors. For some reason Mini has 3 leads coming off the same point on the harness that are all the same connector type. The temp sensor gets the white and yellow connector. The brown and black goes to the air hose next to the turbo inlet. The yellow goes next to the temp sensor
As for the connector - our paceman was built 05/2013 which was about 2 months after the conversion to the "in T-Stat" sensor design so for me it was only a plug and play effort. No adapter required.
Pulled the battery cables, pulled the intake back out and looked to see what was going on in there to see if it was something that was super obvious and nope... nothing out of the ordinary.
So went in and pulled out the Windows laptop ( I usually use a Chromebook ) to use INPA to scan the car and see what the dang thing was saying. Went to the following site: https://bmwfault.codes/ and put the codes in there. Did a little Google Docs file real quick to get the formatting set and readable and came up with the following:
So - it looks like I may have to start chasing wires at this point? Anybody have any suggestions on where to turn other then a damn Fluke meter?
if you removed the ECU/DME plugs, try to remove them again to check if the pins did not get bent. There is also a chance the T-stat you got was defective. If you have ISTAD, it will take you through the trouble shooting steps.
if you removed the ECU/DME plugs, try to remove them again to check if the pins did not get bent. There is also a chance the T-stat you got was defective. If you have ISTAD, it will take you through the trouble shooting steps.
I did take all three off to gain easier access yea. Im hoping that I didn't get a bad assembly... this is not a fun item to R&R.
That said, I think the temp sensor is luckily removable, though I am sure a mess will result.
Did you verify the plugs are in the right spots...whatever those "same-looking" two or three were? Seems like the sort of code you would get if they were not in proper order.
When I attempted my thermostat replacement, I dont think I removed them as I couldnt figure out how to get them out from below the turbo / aux water pump area.
Correct, its a damned nightmare lol.
That said, I think the temp sensor is luckily removable, though I am sure a mess will result.
Did you verify the plugs are in the right spots...whatever those "same-looking" two or three were? Seems like the sort of code you would get if they were not in proper order.
When I attempted my thermostat replacement, I dont think I removed them as I couldnt figure out how to get them out from below the turbo / aux water pump area.
It seems that no matter what you do when it relates to the coolant system its going to be a mess...
I went back in ( again ) for the2nd time to ensure that everything was where it needed to be, and low and behold...
I'll be danged that it looks like in fact I did miss one. Twice if you count the first time I looked in there to make sure it was all connected up. Figured that I'd post a reply of my screw up so that others can hopefully learn from my fuzz-up. Now that it's all connected, the codes were cleared using INPA it seems that all is right w/ the ECM ( finally )
Thanks all for the assistance and have a good rest of the week!
Coolant Temp Issue - what now?
