CMF_Vroomy
» CMF MemberThe relay for my radiator fan has developed a worsening problem. Not so much the relay (I think) but the ECU signal driving it.
After the engine has warmed up to normal temperature the relay starts to chatter, solenoid switching on/off rapidly and noisely. It seems the ECU signal is pulsing the relay rather than applying a sustained voltage. This can't be good for the fan either.
The problem is most apparent when I put my foot on the gas pedal and start to accelerate. As the car accelerates the fan relay starts pulsing. As soon as I take my foot off the gas it mostly stops.
Can anyone advise what the problem might be? The problem was intermittent for a long while but now happens constantly.
After the engine has warmed up to normal temperature the relay starts to chatter, solenoid switching on/off rapidly and noisely. It seems the ECU signal is pulsing the relay rather than applying a sustained voltage. This can't be good for the fan either.
The problem is most apparent when I put my foot on the gas pedal and start to accelerate. As the car accelerates the fan relay starts pulsing. As soon as I take my foot off the gas it mostly stops.
Can anyone advise what the problem might be? The problem was intermittent for a long while but now happens constantly.