[Bugman]

Always like success.

I'd go onto RiffRaft diesels site and order up the Motorcraft one now just to have on hand

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[Bugman]

That is a good relay, you need to test the glow plugs if you haven't already.

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[Bugman]

I'd also check just how long that the relay is staying on for.

I know that I have over 4 bad glow plugs and when I started my truck up this morning at a -4 it did a lot of argueing and smoked in a parking lot. But once the engine started I ran the RPM's up to 1500 and held it there for a couple of minutes. I drove for around a quarter mile and while my partner was getting some coffee I ran the RPM's back up for a few minutes until the cylinders were hot enough that it quit smoking.

I'll get the plugs replaced this spring

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[Bugman]

If the PCM isn't controlling the GPR correctly you can always add a pushbutton to supply the ground.

In stock form the PCM keeps the GPR on for up to 90 seconds to burn off excessive carbon that is deposited on cold starts.

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