Glow plug help

[solarman216]

Is that true, on for up to 10 mins after start up?I was under standing that they went off after the yellow light on dash. Laurie.

the light on the dash is there only to tell you that they are hot enough to start the engine, but they stay on until the engine attains a certain temperature, to ensure good running and reduce smoke and emissions, this is much more important on turbo engines as the compression ratio is lower so the compression temperature is lower, Rick

 

[laurieash]

the light on the dash is there only to tell you that they are hot enough to start the engine, but they stay on until the engine attains a certain temperature, to ensure good running and reduce smoke and emissions, this is much more important on turbo engines as the compression ratio is lower so the compression temperature is lower, Rick

ee yar learn somat new every day:thumbs Laurie.

 

[rustic]

On the Td version, when the yellow light goes out, the plugs are on lower power as they are then sourced via a resistor.

On the Tdi they may pulsed on and off, but the outcome is the same.