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Hi all....., am after a lil' help and guidance....., i've a 2.1xud diesel and have got trouble with my glow plugs coming on ......., had a bit of trouble last week were the plugs weren't coming on with the ignition but a couple of on/offs with the key and they kicked in and also started getting the glow plug light coming on now and again for a few secs while driving but now i've getting nothing, My initial thought was the relay was gone and was just after help locating it but after reading a couple of posts am wondering if the troubles elsewhere and if it could be the ambient temp sensor ?......., anyone with more xud knowledge point me in the right direction please ?

Couid be the temp sensor.

Try unplugging the sensor and then see if the glow plug light stays on,
Before buying a new sensor, just to rule that out,

thanks loz......, where is the sensor ?

thanks for the advice........., am sorted now, it was the control unit/relay