running temperatures

[clembo]

I just wanted to know what temperature the fan should be cutting in on my 1.8t just not sure.

also I get a little whiff of coolant every now and again but im not losing any coolant????

hope its not gonna cost too much

[danbmx_69]

i have the same smell of coolent to now and agin and not looseing any, my fan cuts in at 110-115c
dan

[stocktake]

Originally Posted by danbmx_69

i have the same smell of coolent to now and agin and not looseing any, my fan cuts in at 110-115c
dan

Pretty certain you have lost the low speed on the fan. the 1.8 has a 2 speed version of the KV6 3 speed fan. Both these set ups are prone to losing low speed through brush wear. On a 1.8 it needs to be a priority to get it fixed.
It could also be a later 2 speed where the resistor has failed. To check to see if you have a later 2 speed look through the front grill at the cooling fan, at the 2 0'clock position you should see a silver resistor on the later fan.

Low speed fan test is :

start car, select demist in the cab. go to front of car fan should be running. If not you need to get it sorted

If you are checking fan operation via obd engine temp them low speed fan on the 1.8 is on at 106 off at 100 (ish) when the engine is running IIRC Simon (sd1too) may have the exact figures to hand

[danbmx_69]

yeah i know my low speed isnt working, soon to be fixed though, what temp is the slow speed ment to come in at 100c?

[clembo]

when i put the demist on the fan kicks in after about 5 seconds then goes off after ten seconds then comes back on again after 10 seconds. it keeps repeating. is this normal??

[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°C.

Originally Posted by clembo

when i put the demist on the fan kicks in after about 5 seconds then goes off after ten seconds then comes back on again after 10 seconds. it keeps repeating. is this normal??

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

TC

[clembo]

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°C.



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

TC

so do i need to change the resistor??? or is the fan goosed?

[stocktake]

Change Resistor if it has one

[clembo]

yes it has one are there any uprated ones or do i go for a standard one??

[stocktake]

Originally Posted by clembo

yes it has one are there any uprated ones or do i go for a standard one??

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