running temperatures

[clembo]

Originally Posted by stocktake

Contact Jules, a member on here, do it via email as he is a busy boy

He will supply an uprated resistor at a good price and pre-drilled to fit

thanks stocktake

[tourer]

Originally Posted by T-Cut

From the forum archive.

1.8 Engine Running:
Between: 98°C and 104°C = Low fan speed
Between 105°C and 112°C = High fan speed
The ECU switches both cooling fan relays off if the temp. sensor registers
a temperature of 98°C or lower.

1.8 Engine Stopped:
Above 112°C = High speed (Heat soak/engine off only)
The cooling fan motor is now able to operate at high speed until the temp.
sensor registers a temperature of below 112




No. Your slow speed has failed. What you have is the classic high speed (emergency) pulsing.

TC

Do you have the same information for the CDT, please?

Cheers.

[SD1too]

Originally Posted by stocktake

Simon (sd1too) may have the exact figures to hand

Yes, thanks Dave. There is no specific data given for the 1.8 Turbo, so here are MG Rover's figures for the 1.8 normally aspirated:

Slow speed: on at 104, off at 98.
Fast speed: on at 112, off at 106 (engine running).
When the engine stops, for 300 seconds before the ECU powers down the fan will run at high speed if the coolant is above 108 degrees. It will turn off at 104 degrees, and run for a maximum of 5 minutes.

Please note:

Originally Posted by T-Cut

From the forum archive.

1.8 Engine Stopped:
Above 112°C = High speed (Heat soak/engine off only)
The cooling fan motor is now able to operate at high speed until the temp.
sensor registers a temperature of below 112°C.

According to MG Rover this is incorrect. It would be great if T-Cut could verify this by experiment with his own car.

Originally Posted by tourer

Do you have the same information for the CDT, please?

MG Rover data for the diesel with 3 speed fan system (no data is given for the 2 speed resistor system):

Slow speed: on at 100, off at 98.
Medium speed: on at 106, off at 102.
Fast speed: on at 112, off at 110. Another section of the manual gives the 'on' temperature as 119! I assume this is a misprint.

There is no mention of any fan operation when the diesel engine is stopped.

Simon.

[T-Cut]

Originally Posted by SD1too

Please note:
According to MG Rover this is incorrect. It would be great if T-Cut could verify this by experiment with his own car.

As I made clear, the figures quoted are from the Forum archive, posted by Jules I believe. I suggest you contact him for the correct data.

TC

[SD1too]

Sorry to hear that you're unable to help on this occasion TC, despite having a 1.8 yourself.

Simon.