Cooling Fans

[mrmhayes]

Hello, I have a 1997 2.0 diesel and when I put the key in the ignition but do not start the engine, one of the cooling fans comes on even when the engine is cold.

I have recently had issue with the glow plug warning light coming on as well but have resolved that by sprayng the brake pedal switch with WD40. any ideas??

[bhbobhill]

Hi,

One of the fans comes on due to the air con, both come on when temp goes above halfway.

Have you thought you may not have a fault.

Regards

Bob Hill

[seatkid]

Hello, I have a 1997 2.0 diesel and when I put the key in the ignition but do not start the engine, one of the cooling fans comes on even when the engine is cold.

I have recently had issue with the glow plug warning light coming on as well but have resolved that by sprayng the brake pedal switch with WD40. any ideas??

Firstly there is no such thing as a 1997 2.0 Diesel, it must be 1.9Tdi either 90bhp or 110bhp. As the 90bhp has only one cooling fan I assume it must be the 110 bhp AFN engine.

 

When the a/c is turn on (or on Auto if climate control), the fan(s) should come on at half speed by default. This keeps the a/c condensor cool and operating efficiently. When you swith a/c off (or to ECON on climate control), the fans should stop, unless the engine temperature is excessive.

 

Glow plug light flashing indicates a fault detected by the ECU. As you cured it by spraying WD40 on the brake switch, the fault is almost certainly the dual brake switch. These often go faulty or out of adjustment. It is actually 2 switches that should operate together - one is for the brake lights and the other (via the ECU) controls other things such as disengaging the cruise control. If both switches dont agree, it registers a fault and cruise should stop working. If the problem comes back, you may need to adjust or replace the brake switch. Note that the brake switch fitted is dependant on egine and model year.

[bhbobhill]

Hi

My vehicle on a 52 plate has a 1.9 diesel 90bhp but has 2 fans.

Regards

Bob

[NikpV]

Hi

My vehicle on a 52 plate has a 1.9 diesel 90bhp but has 2 fans.

Regards

Bob

 

perhaps my memory isat fault but IIRC mk2 1.9 were 115 or above

[nicebutdim]

It could be the water temp sensor. There is 2 of them in the top hose, one supplies the gauge while the other does the fan and the ecu. My fan was on all the time, when I plugged in vagcom the ecu sensor was showing a constant 140 degrees, even when the engine was cold.

[seatkid]

Hi

My vehicle on a 52 plate has a 1.9 diesel 90bhp but has 2 fans.

Regards

Bob

 

Are you bragging? :rolleyes:

 

Yours is a Mk2 1.9PD, and yes Nick there was a 90bhp version as well as the normal 115bhp, 130bhp, and later a 150bhp version.

 

Mk1 1.9Tdi 90bhp (1Z and AHU) definitely have 1 big fan. Whereas yours has 2 weeny fans. :P

[NikpV]

and yes Nick there was a 90bhp version as well as the normal 115bhp, 130bhp, and later a 150bhp version.

 

 

 

I stand corrected - I reckon al.... al.... is setting in cos I cant remember what its called (no not alcoholism :rolleyes: its got a z in it somewhere)

Edited January 17, 2012 by NikpV

[Bigjeeze]

and yes Nick there was a 90bhp version as well as the normal 115bhp, 130bhp, and later a 150bhp version.

 

 

 

I stand corrected - I reckon al.... al.... is setting in cos I cant remember what its called (no not alcoholism :rolleyes: its got a z in it somewhere)

 

Must be Alcatraz - because alopecia is a song about french children!

[NikpV]

 

I stand corrected - I reckon al.... al.... is setting in cos I cant remember what its called (no not alcoholism :rolleyes: its got a z in it somewhere)

 

because alopecia is a song about french children!

 

if you say so but I'm sure its got a Z in it somewhere so it must be alcatraz - n0w wheres my bird ??