New Glow Plug Controller clicking fast

[ffordtowman]

I just replaced all 8 glow plugs and the controller. Now the controller is clicking rapidly. I doubled checked all of the glow plugs and they are good. Can somebody plese send me the test for the controller. And any other possibilities that would cause this.

[BuilderBob]

But how does the truck start?
How long does the "Wait to Start" light stay on?
Based on your limited description, it sound like it is working as designed.
Thats how mine has worked for 15 years.
If I burn a GP, than everything changes.

[ffordtowman]

No wait to start light. As soon as i turn the key on the clicking starts.

[Snotzalot]

What brand GP and did it start normally at all?

[ffordtowman]

I was using motorcraft. This time I put Bosch in. The old relay shorted out and burnt up all of the plugs.

[cdnsarguy]

I have sent you a PM....... I can send you the controller test. Did you ground the new controller to a good ground..... if needed extend the ground wire to a solid ground point, back of the head with a bolt in one of the excess holes or an intake manifold bolt.

Diesel Don posted this info over 5 years ago...........

If you have 2 or more bad GPs, the controller may not cycle at all.
Two problems that occur with the solid state ( 1987 to 1994 IDI engines ) GP systems. If a GP burns out ( circuit resistance goes up ), the controller cycles the GPs at a faster rate which doesn't let them get to max operating temp. If 2 or more GPs fail, the controller may not cycle the GPs at all ( very rapid or no clicking heard ). When you check the GPs, use an ohmmeter. A high resistance ( not necessarily burned out ) GP can cause circuit resistance to go up and the controller will then cycle the GPs too fast. You probably will not find this problem with a test light. Resistance spec for GPs = .5 to 1 ohm cold. Second problem. A poor controller ground ( black wire attached to valve cover stud ) will cause the controller to leave the GPs on longer, often damaging or failing them. If you are having mulitple GP failures, I would check closely the controller ground. Now the confusing part. Bad ground --> longer GP on time ( slower cycling ). Burned out GPs --> faster cycling If you have both situations, it may appear that the controller is cycling the GPs at the proper rate. Bad ground slows it up while the burned GPs speed it up ---> normal cycling. The system acts/sounds like it's working normally, but you have a hard starting concern.
By........DieselDon

Glow plug torque is 12 ft lbs, I always use antisieze on the threads.

[ffordtowman]

I want to thank everybody for their help. The problem was the remote wire was shorting out causing the relay to not get a constant current, hence the rapid clicking.