glow plug controller info

[thomaso]

Hi!

I'm having trouble getting my glow plugs to glow every time I start the engine. The inhibit switch has been bypassed, still no glow. A spare parts dealer told me that the controller has a sensor built in that senses the warmth of the engine and therefore wont let the plugs glow. Is this true?

Otherwise the controller works just fine like it is supposed to do. Glow plugs are brand new. The engine is 6.2d vin c. I want to make it to glow every time so it wont be so hard to start, it needs a lot of cranking.

[alteredspeed]

I have a 6.2 also and it does have a sensor i belive it works off of the coolant temp. when i first bought the truck it started hard. Thought it was the glow plug controller, replaced the batteries and cables, finally found out it was a bad starter. It does not glow every time when it is hot and does not even crank over twice before it starts.Hope that helps but it sounds like you may have more problems than just the glow plugs.

[thomaso]

Well, the controller truly has a sensor for radiating heat.This was confirmed to me from a repair shop. So I bolted it off from cylinder head and taped it to a wire bundle in the back of the engine. Now plugs glow every time and the engine starts better when its warm.:)

[More Power]

A typical and normal engine and fuel injection system don't need glow to start well with the engine over about 80 degrees F. For those engine that require glow at an intermediate temperature, modifying the glow system to produce a glow cycle could mask the root cause of the problem - most likely either slow cranking speed, below normal compression pressures or fuel injection system health (i.e. poor injector spray patterns and/or fuel atomization).

Jim