What's the proper procedure for fixing a bad glow plug code?

[Fandini]

Had a problem code read at the local O'Reillys and was told it was a bad glow plug in cylinder #5. Also pulled code PO675 from my edge insight but I don't have a clue what that means.

Can somebody tell me what code PO675 is?
And, if a glow plug is the consistant code what is the proper procedure for diagnosing and fixing this problem?
Thanks

[jesilvas]

Let me google that for you
http://www.dieseltalk.com/support/DTC.pdf
Glow Plug Circuit fault P0675? - Ford Truck Enthusiasts Forums

[Fandini]

Good info. Thanks. One thing I haven't been able to find is how to test the glow plug itself to determine if the glow plug is good or bad or if the problem is elsewhere. Can you just check for continuety in the glow plug?

[jesilvas]

Yea, I think just like 7.3s. It's just a resistive heater.

[PSDMikeB]

I searched this forum for "glow plug ohms 6.0" and there are several posts which indicate that the glow plugs should have around 0.5 to 1.0 ohms resistance.

Zero and a GP is bad, greater than 2 (or 5 depending on who you ask), and the GP is bad.

You can also check the wiring from GP to control module while you have the harness off to see if the wires are good. Be careful of the buss bar on the GPs, they are easy to break.

6.0 GPs are usually very robust and do not fail at the rate of previous models.

MikeB

[michaelaiman]

I used a booster pack to test my plugs one at a time when taking them out. Worked pretty good, gives the booster pack a hell of a work out too