Cooling Fan Speed Problem Xsara 1988

[paul.h]

This is copied from a post by noelport posted in the C5 section:

 

In my case, the A/C high-speed cooling fan doesn't come on resulting in too high a pressure and unable to recharge properly. Initially, I found the twin condenser blower relays completely melted due to loose connections on the relay terminals. I replaced both relays but I can't get the blowers to go on high speed. If I jumper the series relay contacts in front of radiator, one blower turrns off and the other goes on high speed. Are both fans supposed to go to high speed or does one turn off while the other goes to high? Please help. I would really appreciate your advice. It's a Xsara saloon 1988 model, twin front cooling fans. Thank you.

 

[paul.h]

noelport did not give much info on the car, we do not know what year it is (definately not 1988), which engine it has - size, bhp and petrol or diesel, whether it has climate control or just manual air con.

 

It does appear though that Xsara cars with 2 radiator fans, the first speed occurs at 96°C and the high speed if 101°C is reached. So possibly noelport is not letting the coolant get hot enough for the high speed of the fans to kick in.

 

Looking at the spec for our C5, the engine fan is a 3 speed one:

- 1st speed at 97°C or if air con is on

- 2nd speed at 101°C or 17 bar in the air con

- 3rd speed at 105°C or air con on

- air con cut off at 115°C or 30 bar in the air con

- high temperature warning at 118°C.