1992 ford f-250 7.3 l diesiel, glow plug controler wont shut off after starting

Maybe you got a bad glow plug controller ! Did you use a aftermarket part or OEM replacement ?

I have had the same problem with my Ford mustang the only thing is that it only shuts down in high idle, after the engine temperature warms up there is no shut down. It could have something to do with the transmission or the temperature sensor the best thing to do is get a full diagnostic and not do it your self.

SOUNDS LIKE YOU NEED A NEW GLOW PLUG CONTROLER

Welcome to fixya

Hello

I have a solution for this

Press Ok, Accept or replay so we may get started

Your pre-solution is coming up shortly

PLEASE REPLY OR LEAVE COMMENT TO CONFIRM YOU RECEIVED THIS EMAIL

My name is Bruce

STOPPED UP AIR FILTER.BAD ENGINE GROUND.COULD CAUSE NO START UP AFTER 30 MINUTES.

diesel?? sounds like a electric supply problem try cleaning the fuse holders and fuses on the big fuses near the battery

Items to check are

alarm/starter disable relay

neutral safety switch (automatic trans)
try to start on N.

clutch on safety switch (stick)

main fuse
glow plug fuse
glow plug relay
glow plugs

Have you checked out the glow plugs to see if they are still good? Also pick up a copy of Haynes Diesel Engine Repair Manual, part#10330. Starting on page3-36 they have an excellent diagnosis section for your glow plug system. Hope this helps.

Bad glow plugs and/or glow plug controller. Common issue with these vehciles. Some also have harness failures. Replace all glow plugs as a set not individually.

You need to check the glow plug system. Check for power from the glow plug relay.