Glow plug dash indicator
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Senior User
Joined: Aug 2011
Posts: 136
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Glow plug dash indicator
Is everyone else seeing their glow plug indicator everytime they start their truck? I noticed that mine is not coming on at all. I I live in fl and realize the weather would not require the plugs to activate but I remember it used to come on. Anyone else having th same problem? I remember it did light just momentarily to indicate the lamp worked. But has stopped everytime now.
Tuned
Joined: Aug 2010
Posts: 482
Likes: 28
From: Southern Ontario
Mine always lights on the first start of the day. It may not light on subsequent starts ... Guess the engine is warm and he knows they are not required. I would be surprised if yours never lights .... even in fla. Take it to the dealer and have it checked out.
Laughing Gas
Joined: May 2005
Posts: 1,082
Likes: 1
From: Illinois
I am the same as everyone else on here. My glow plug light comes on for the first start of the day and then I never see it again. I bought my truck in April so I haven't seen any really cold whether with it yet. I expect to see it on more often in the Winter.
Senior User
Joined: Jul 2010
Posts: 241
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I want to say the longest I have seen mine on is 2-3 seconds, other times I do not see it. In the beginning I actually had to look in the book to see where it was. And I agree with Sgt93, I use to have a 79 GMC in Northern MN, If I forgot to plug it in.......
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Tuned
Joined: Aug 2010
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From: Southern Ontario
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Super Moderator
Joined: Aug 2003
Posts: 25,479
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From: Isanti, MN
This has been discussed before, I just did a search and found more info:
It should be noted that the wait-to-start indicator on-time is controlled by the PCM and is independent from the GPCM on-time.
If the ECT is below 140°F (60°C), the GPCM energizes the glow plugs immediately after the key is placed in the ON position. The on-time is controlled by the GPCM and functions on the basis of the engine RPM, engine torque, engine coolant temperature, air temperature, BARO sensor and battery voltage. The primary ones are battery voltage and the engine coolant temperature.
Additional tidbits...
The GPCM provides battery voltage for approximately 2 seconds to rush current and heat up the glow plugs, then drop back to 7 volts lowering the amperage.
The glow plugs can operate up to 20 minutes.
The glow plugs may turn back on at cold ambient extended idle.
If the ECT is below 140°F (60°C), the GPCM energizes the glow plugs immediately after the key is placed in the ON position. The on-time is controlled by the GPCM and functions on the basis of the engine RPM, engine torque, engine coolant temperature, air temperature, BARO sensor and battery voltage. The primary ones are battery voltage and the engine coolant temperature.
Additional tidbits...
The GPCM provides battery voltage for approximately 2 seconds to rush current and heat up the glow plugs, then drop back to 7 volts lowering the amperage.
The glow plugs can operate up to 20 minutes.
The glow plugs may turn back on at cold ambient extended idle.
Senior User
Joined: Jul 2010
Posts: 270
Likes: 0
Really -30 F, and only 2 seconds...I guess I could test that theory pretty easily in a couple months. That plugged in or not?
Speaking of cold weather, are these trucks suppose to come with a grille blanket when sold in cold climate. A fellow worker said his 6.4 came with one, I don't know where it's hidden, and if mine came with one, or was supposed to or not..?? .
Laughing Gas
Joined: May 2005
Posts: 1,082
Likes: 1
From: Illinois
Mine didn't come with one. I bought this one from eBay last week. I am please with the initial look and feel, let's see if it holds up during the winter: 2011 Ford F250 F350 F450 F550 Winter Front | eBay
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 738
From: Isanti, MN
Really -30 F, and only 2 seconds...I guess I could test that theory pretty easily in a couple months. That plugged in or not?
Speaking of cold weather, are these trucks suppose to come with a grille blanket when sold in cold climate. A fellow worker said his 6.4 came with one, I don't know where it's hidden, and if mine came with one, or was supposed to or not..?? .
1. The manual says that the block heater is required for below -10°. It will start below that, but that's considered abuse by FMC. I didn't do it to mine, I suggest you not do it to yours. I have started mine at -10° before without block heater, but -11° or more and it was certainly plugged in.
Secondly, the 6.4L truck had a problem with snow clogging the air filter. This was their fix for the issue, they only issued winterfronts to trucks sold in the northern states. The 6.7L hasn't demonstrated this problem, and so we don't get one. I did foul my air filter in snow last winter though, it was in that nasty blizzard in December when we got 18" on that one Saturday. It can happen, drive accordingly!