Another 956xl issue: engine heat relay

[milkloss]

Another one for the old girl! A year or two back we unplugged the heater coil on the intake as the relay was always on with the key. Had a bit of an investigation and I see the relay has four small wires going to it as well as the two for the heater power. What do these small wires do? Two for the solenoid I guess but that then leaves two more. Does the relay use a temperature signal of some sort for the timing of the coil or am I barking up the wrong tree?

the other question is whether the coil should only activate on the normal spring position on the key?

Many thanks for advice.

 

[Gapples]

Another one for the old girl! A year or two back we unplugged the heater coil on the intake as the relay was always on with the key. Had a bit of an investigation and I see the relay has four small wires going to it as well as the two for the heater power. What do these small wires do? Two for the solenoid I guess but that then leaves two more. Does the relay use a temperature signal of some sort for the timing of the coil or am I barking up the wrong tree?

the other question is whether the coil should only activate on the normal spring position on the key?

Many thanks for advice.

I have a diagram of this relay somewhere, I'll see if I find it for you.
Basically though you turn the key to ignition on, if the ambient temperature is 5°c or below the heater light & heater element should come on for approximately 30 seconds, when the light goes out you turn the key to start.

 

[milkloss]

I have a diagram of this relay somewhere, I'll see if I find it for you.
Basically though you turn the key to ignition on, if the ambient temperature is 5°c or below the heater light & heater element should come on for approximately 30 seconds, when the light goes out you turn the key to start.

Thank you. Your post made me realise I am barking up the wrong tree: the relay has its own temperature sensor and the other wires are for the power from the key and a line back to the dash for the heat bulb.
New relay it is I reckon.

 

[Gapples]

Thank you. Your post made me realise I am barking up the wrong tree: the relay has its own temperature sensor and the other wires are for the power from the key and a line back to the dash for the heat bulb.
New relay it is I reckon.

This is the cold start relay.

 

[milkloss]

This is the cold start relay.

excellent, thank you. Be a good start when we get a new relay and correct the wiring if necessary

 

[essexpete]

If the 956 is not starting very well in the colder don't underestimate the importance of starter to make it spin well. I found that out but not long before I sold our one.