glow plugs stuck on

[hvguy]

Originally Posted by v8volvo

Even if the GP temp sender is unplugged the plugs should still go out shortly after the engine starts.

If a relay sticks on and the plugs never get turned off, they can melt themselves and the tips can get swollen... and then you may have trouble getting them out. Or even worse, a tip could come free and drop into the combustion chamber and do major damage. If the relay sticks, unhook the power to it right away, otherwise you may end up causing lots of other trouble for the motor.

A light on the dash to monitor if the plugs are glowing or not is a great idea to avoid this problem.

well, even if the relay is unplugged 'entirely' the light stays on... it actually comes on immediately after I put my key into the ignition... O_o? forget the OEM crap... im making a control panel for everything at the moment, as well as doing a stage 1 weight reduction... no ac or sound deadening.

thanks again for everyone's help

[240diesel]

If the extra control-light on the dash stays "on" i can imediatly switch off the power after i put the car near the road because i fitted a betteryswitch to prevent joyriding, fire while i'm away etc.
So for me it's allright to have the light.

remember also that what kind of contact you apply to power the GP's they all can meltdown some time (yeah, even my bat.switch :-) :-) )

[hvguy]

got around to installing the GP switch this evening... I tapped into the defroster power supply in the dash, switched that to the relay and spliced a wire from the glow plug side of the relay to an indicator light... to indicate that there is power flowing through the relay.

here is how the switch came out: I used an old control panel switch I pulled from a factory scrap job a long time ago, the faceplate was a plus =)

off

on