Glow plug testing help please
Thread Starter
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Mountain Pass
Joined: Nov 2004
Posts: 198
Likes: 0
From: Albany, NY
Glow plug testing help please
I searched and all I can find is older Fords or the Cali systems. Mine is a federal 2001 7.3.
Lots of smoke and hard to start below 30....new GP relay already.
Can someone please forward a pin-test diagram of the glow plugs for MY rig so I don't have to pull the valve covers for nothing.
Thanks!
Lots of smoke and hard to start below 30....new GP relay already.
Can someone please forward a pin-test diagram of the glow plugs for MY rig so I don't have to pull the valve covers for nothing.
Thanks!
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Here ya go:
To check the harness ohm it at the Valve cover connector on the outside.
Pin Out
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
***The injectors fire with a 115VDC signal from the IDM do not pierce to wires to test.***
Ohm between "I" and "C" to test the injectors, should be less than 5.0 Ohms
To check glow plugs Ohm between "G" and battery ground should be between 0.1 and 2.0 Ohms
To check the harness ohm it at the Valve cover connector on the outside.
Pin Out
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
***The injectors fire with a 115VDC signal from the IDM do not pierce to wires to test.***
Ohm between "I" and "C" to test the injectors, should be less than 5.0 Ohms
To check glow plugs Ohm between "G" and battery ground should be between 0.1 and 2.0 Ohms
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
No problem. Just know it is harder than it seems without really thin alligator style clips on the meter probes. Also, the clips on the connector will come off fairly easy when you release the keepers. Just saying, be careful not to break them cause that sucks. From there it is the nine connectors I described.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
if you get confused check this link out..it can be found in my mod's and fixes link with some other goodies in my sig below..
https://www.ford-trucks.com/forums/4...ke-thread.html
https://www.ford-trucks.com/forums/4...ke-thread.html
