Glow plug dash light

[stool]

On my 97 2.8td nissan patrol.

When I switch the key on to pre heat the glow`plugs the dash light flashs
and the engine will not start

Is the glow plug relay buggerd` As all my fuses are not blown

[stool]

Any help Im getting sick of riding the pushy to work

[Woop]

Could be a faulty glow plug controller. Have a listen to see if the glow plug relay (underneath the flap next to the battery) is clicking when the key is turned to 'glow' There are 2 relays-check the smaller one on the right is clicking on. Also check blue and brown fusible links also..

Nick

[stool]

Thanks I will check for that this weekend

Ive got the car going by running my own Power cable up to the dash
through a fuseable link to a switch.

Than back to glow plugs with a earth from glow plugs back to engine block.
Which has got me going but not fixed the original problem.

I know I can hear at least one relay switch on and off .

Thanks for your help i will post up how i go.

Steve

[Woop]

I think from memory, the system relies on on of the relays creating an earth for 3 of the 6 glowplugs. Only one relay should switch on at a time to avoid a short circuit....When the first relay turns off, the second relay which would normally have been supplying the earth return for 3 of the glowplugs, now switches on and supplys power for the other 3 glowplugs through its other set of contacts which are connected to Batt +ve..

Nick

[HeathGQ]

Mines a 4.2 diesel, but what I find is I have to wait to hear the relay click off after the light goes out..... have you tried that to just listen for the click.

[Woop]

2.8 glow system works differently to that of the 4.2. I think the 4.2 system turns off the glowplugs a little while after the lamp goes out, then pulses them a few times after the engine has started--depending on temperature.

Nick