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Shuknami · 12th June 2022, 14:48

I have recently had a Rover 75. I have found that the FHB is not working, even on cold days. Sometimes I can see that the housing is hot next to the coolant hose, but the exhaust is cold.
The model I have is the 66232B.
I recently did a test, with the engine off and with a high outside temperature and when connecting pin 3 to positive, it made a turbine sound that I suppose is the pump, I don't know if it's diesel or coolant. This lasts a little over 1 minute and turns off.
At the power supply connector, 12.76 volts arrive.
The exterior and the exhaust are cold, but I do notice that it sucks in air.
What else can I check?
If necessary, to disassemble the Webasto, could you do a bypass to be able to drive the car without it?

12th June 2022, 14:48	#1
Shuknami Regular poster Rover 75 Saloon Join Date: Jun 2022 Location: Santiago de Compostela Posts: 48 Thanks: 9 Thanked 0 Times in 0 Posts	Webasto 66232B I have recently had a Rover 75. I have found that the FHB is not working, even on cold days. Sometimes I can see that the housing is hot next to the coolant hose, but the exhaust is cold. The model I have is the 66232B. I recently did a test, with the engine off and with a high outside temperature and when connecting pin 3 to positive, it made a turbine sound that I suppose is the pump, I don't know if it's diesel or coolant. This lasts a little over 1 minute and turns off. At the power supply connector, 12.76 volts arrive. The exterior and the exhaust are cold, but I do notice that it sucks in air. What else can I check? If necessary, to disassemble the Webasto, could you do a bypass to be able to drive the car without it?