Fast clicking glow plug relay

[Noiseydiesel]

'87 F250 6.9 idi
The first diesel that came home.
I took it for a drive, no problems, got it home parked it, it cooled off, went to start it later and now a fast clicking relay controller.
Replaced entire unit, controller and relay, with a Standard brand product from Napa and same results.
Any ideas?
Motorcraft glow plugs about a year old and 8? thousand miles on them. Probably less.
Thanks in Advance!
Bruce

 

[IDIBRONCO]

While the glow plugs should be good, it wouldn't hurt to check them. A fast clicking relay usually means burned out glow plugs. Maybe one, maybe all eight.

 

[Philip1]

It should also be a loose or broken wire to the glowplugs

 

[rhkcommander]

Bad plugs or the wires to them, or the connections to controller or relay are loose if it's like full auto machine gun fire!

 

[Noiseydiesel]

Stopid me got to thinking about it just as I was typing it out.
As the air cleaner is off, now the job just got easier. I ignored it yesterday due to frustration. Oh well. Now I have a used good controller.
Just time for more Motorcraft G/P's Hope it ain't swollen up on the head.