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glow indicator

We have an engine that revved at high rpms for no specific reason & also the glow plug indicator on the dash shines continuous. Could we have a faulty controller? It has a Mazda diesel engine.
  • Posted 8 Sep 2010 02:42
  • By buckshot
  • joined 8 Sep'10 - 15 messages
  • Texas, United States
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Under the air cleaner is this controller & another relay. The glow plug indicator light dims when thre relay clicks & then brightens when it clicks for the second time. Is the controller telling this relay to open & close but the circuit to the indicator light is not opening?
  • Posted 8 Sep 2010 03:47
  • By buckshot
  • joined 8 Sep'10 - 15 messages
  • Texas, United States
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under the air filter hosing is the glowplug controller. it will be faulty and will probably burnt out the glowplugs. check that the throttle cable is free and not tight when pressing the pedal ,it could be seizing up
  • Posted 8 Sep 2010 03:00
  • By grubbymits
  • joined 25 Jan'09 - 49 messages
  • scotland, United Kingdom
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Fact of the week
Neptune was discovered in 1846. It then took 165 years, or until 2011, for the planet to complete one orbit of the sun.