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Joshy89

Glow plugs again...

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I changed my glow plug controller and plugs 4 months ago all was well it fixed my lumpy idle dpf issue etc. Yesterday morning I got a lumpy idle again so I checked it out with my scanner lo and behold it’s the plugs once again! All 6 glow plug activation, question is am I just unfortunate and the controller has blown or is there an underlying issue which is frying it? Would love any input from anyone with a similar experience. I should mention controller was bought from bmw. 

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The supply wire from alternator to glow module (Nr.1) is prone to fail at the module end. The internal contact in the plug housing has poor contact and can even melt due to higher resistance. This will cause fault code from all glow plugs. So I would renew that wire first.

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