Question about 2004 Ford Excursion

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2004 ford excursion 6.0 was slow at starting unless plugged in, now won't start at all need to know exactley where the glow plug relay is located

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Im assuming this is the diesal 6.0, and your using the heated plug for over night. in this case check the battery,starter, and altinator. sounds like the oil is warm and starts easily, and oil is cold and has hard time turning the engine over due to the cold (thicker) oil. or the starter just may not be getting the full amount of amps it needs to turn it over, I would start there and if this works, then try a thinner oil in the cold weather, then thicker for summer.

Posted on Dec 31, 2010

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You need to start with your glow plug circuit. There is a glow plug module that is the most likely culprit. You need to get a circuit tester and when the another person turns the key, you verify whether or not you have voltage to glow plug on the engine itself. If not the control module will have to be replaced. The glow plug control module is on the right hand side and front of the engine. Let me know what else you may need.

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I have a 2004 excursion diesel drove it all day stoped at a clients turned it off for 20 min came out and wont start the starter is going but its just not firing could it be a fuse I dont smell fuel but I...


Ok well the glow plugs on a diesel have nothing to do with the engine firing. All the glow plugs do is heat up the combusion chamber on cold starts. Diesel engines fire using high compression. An oxygen sensor won't cause the vehicle to not start and your diesel doesn't have one of those anyways. It could be a fuel related issue. (pump, line, pressure etc.) Have you it scanned for engine DTC's? But based on your knowledge of your diesel vehicle i'm going to suggest you take it to a shop.

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when the key is on without starting do you hear a whirring sound from the fuel tank , if no it's a fuel pump or fuel relay. Did you check it for spark from the plugs get back with me

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It sounds more like the glow plugs, the older models had trouble out of the module, but the 6.0 is pretty safe from all those problems. And don't forget to use the correct fuel additive for diesel engines, it helps .

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