Glow plug light flashing

[Bacardiac]

I started my gladiator this morning and got the glow plug flashing and check engine light. So I went to the forum and found some people had battery issues that caused this. The mini tazer said there was water in my fuel from what it could read. I changed my fuel filter and no water in the fuel filter. I bought a new aux battery and reconditioned my main battery. I will replace but saving a couple hundred extra for odyssey battery. Check engine light went away along with water in diesel warning. Drove it around 15 miles. Parked it and turned it off after cool off. Turned back on and I am still getting glow plug flashing constantly, no check engine light. My jeep only has 61k miles. Glow plugs should not be bad. I live in a hot but very dry climate. Any ideas before I go pay $240 for a diag from dealership would be appreciated.

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[DylanM]

Are any stored fault codes present?
What is your engine off battery voltage reading?
Have you checked for a bad glow plug fuse in the PDC?

 

[Bacardiac]

Are any stored fault codes present?
What is your engine off battery voltage reading?
Have you checked for a bad glow plug fuse in the PDC?

Nope but now I am going to tomorrow. Thank you.

 

[biodiesel]

The factory glow plugs have been known to last 400,000 miles. A lot of times, the issue is the connection at the glow plug. You may need to unplug the wire, clean with electrical cleaner, blow out the hole, apply dialectic grease on the harness side, and ever so slightly squeeze the wire side to make a better connection and plug it back in. The warning light should go out instantly.

 

[Bacardiac]

Ok this is what I got.

 

[Bacardiac]

Ok this is what I got.

It's not reading the glow plug #3. Now I just have to locate it and check connections. But looking like I'll probably have to replace it.

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