Glow Plug Relay Bypass

[02PUFFER]

I just finished this today and I am very happy with the results.

What this mod entails is turning your glow plugs off while cranking your engine. I couldn't find this anywhere on the org so I thought I'd throw it up. The following link takes you to the write up page:

Here

Dzl Jim credits The Tank for this mod; also on this page are instructions for bypassing your glow plugs with a temperature sensor when your truck is toasty warm when starting. It seems like a great idea, however I have a bypass coolant filter system and the filter head would be the only place to mount the sensor. I took temp readings and even when the engine is still warm the filter head has cooled down enough to make the temp switch useless for my application.

Now this writeup is on an OBS truck but the same applies for the 7.3l Superduty's. The only difference is running the starter signal wire from the starter itself up to the relay. I mounted my relay on the GPR itself, not on the fender.

I let my rig sit untouched till tonight to see the results. It turns over much faster now and fires right up from dead cold. Hope you guys enjoy it.

[NCHornet]

The GPR timing is controlled by the oil temp sensor, just because the WTS light is on doesn't mean the GP's are? Just don't see this as something worth doing myself. I suppose if you had weak batteries it could help with cranking, but I would just get new batteries.

NCH

[Ryan Rønning]

I have heard of more and more people doing this. Is it really neccesary?

[02PUFFER]

Necessary? I guess not absolutely, but I liked the results. My batteries are less than a year old and plenty healthy, I've never had starting problems in that respect, I just enjoy the piece of mind I guess.

I would like to hear if other people have done the same and their results too.

[Ryan Rønning]

I see the posts once in a while.

What are talking about in your sig?

[SCUFFY828]

an absolute total waste of time , the pcm shuts the glow plugs off anyway when it doesnt need them, so its already doing it , what will people think of next