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glow plug issue on my dads excursion

767 Views 2 Replies 2 Participants Last post by  coupe5oh
My dads '01 ex has had a check engine light for a couple weeks. Finally got around to pulling the codes and get a glow plug fault code. Shouldve written the number down but i didnt. Anyway he took it to the dealer today for an oil change and had them look at it.

To make a short story long they call him back and say all the glow plugs on the drivers side are bad, almost 900 dollar est. Sounds kinda strange to me, all of them being bad at once. I would think it would be a uvc harness or controller issue? Anyone had the same prob?
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If you knew what the codes were, we could tell you which bank is having the problem since the GPCM will give codes for each cylinder. Grab a multi-meter and set it to read ohms. Then pull the 9 pin connector on the inboard side of each valve cover and test the forward 2 and rear 2 pins against battery ground. A good glow plug will read between 0.1 - 2.0 ohms, usually around 0.6.

Once you figure out which side the problem is on, you can pull that valve cover and check for wiring issues, or just replace the glow plugs. Glow plugs run around $15 ea. I'd be happy to replace 4 of them for half what the dealer quoted you.:lol:
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