Hi everyone,
I'm having an issue with my R56 whereby it won't get up to temperature.
At best, I'm able to push the coolant to 50 degrees after a fairly long drive (50 miles) but it's mostly sitting at about 40 degrees.
Performance is poor - with lots of stalling at idle and bad acceleration.
I'm not getting any error codes relating to engine temperature which is making it a bit tricky to diagnose.
My current thinking is that there is too much coolant flowing around the system so the thermostat needs replacing.
However the thing that is throwing me off is that the rad fan is constantly on, from a cold start, and will stay on for about 10 minutes after the car is turned off.
Is the rad fan in some way linked to the thermostat open/close position? Or could the thermostat fault be throwing the rad fan into some kind of safe mode in which is just stays on all the time?
Things I've tried so far:
1. Replace the coolant temperature sensor (£18.99 non-OEM from EuroCarParts) - did this last night and started the motor. For a few seconds the fan didn't come on so I thought I'd fixed it! But unfortunately, it kicked in pretty quick and the car still wouldn't get above 40 degrees.
2. Coolant flush and bleed - I thought perhaps there was an airlock somewhere but doesn't seem to be the case.
Things to try this weekend:
3. Replace the thermostat housing with OEM part - quite expensive so ideally would avoid doing this but looks like that's the next thing to do...
4. Disconnect battery - clutching at straws here but perhaps the ECU needs a power down(?).
5. Buy OEM coolant temperature sensor.
Any other ideas, thoughts or pointers greatly appreciated!
I'll post an update once I've tried the above.
I'm having an issue with my R56 whereby it won't get up to temperature.
At best, I'm able to push the coolant to 50 degrees after a fairly long drive (50 miles) but it's mostly sitting at about 40 degrees.
Performance is poor - with lots of stalling at idle and bad acceleration.
I'm not getting any error codes relating to engine temperature which is making it a bit tricky to diagnose.
My current thinking is that there is too much coolant flowing around the system so the thermostat needs replacing.
However the thing that is throwing me off is that the rad fan is constantly on, from a cold start, and will stay on for about 10 minutes after the car is turned off.
Is the rad fan in some way linked to the thermostat open/close position? Or could the thermostat fault be throwing the rad fan into some kind of safe mode in which is just stays on all the time?
Things I've tried so far:
1. Replace the coolant temperature sensor (£18.99 non-OEM from EuroCarParts) - did this last night and started the motor. For a few seconds the fan didn't come on so I thought I'd fixed it! But unfortunately, it kicked in pretty quick and the car still wouldn't get above 40 degrees.
2. Coolant flush and bleed - I thought perhaps there was an airlock somewhere but doesn't seem to be the case.
Things to try this weekend:
3. Replace the thermostat housing with OEM part - quite expensive so ideally would avoid doing this but looks like that's the next thing to do...
4. Disconnect battery - clutching at straws here but perhaps the ECU needs a power down(?).
5. Buy OEM coolant temperature sensor.
Any other ideas, thoughts or pointers greatly appreciated!
I'll post an update once I've tried the above.
