Cold weather starting
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Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
If we are having glow plug or GPR problems, would the plug light still function just as it would without any problems? Other than staying on a little longer (I assume colder temps require longer warmup time) that part of the truck is working just as normal.
Junior User
Joined: Nov 2009
Posts: 86
Likes: 0
From: Chattanooga, TN
Yep. The light will not indicate any problems with the system. These might include poor contact inside the GP relay and GPs on their way out or dead.
5th Wheeling
Joined: Aug 2003
Posts: 37
Likes: 1
Let's be clear. There is no "plug light" unless you put one in. Do a search on "GPR LED". That is why people put that mod in, it will tell you that your GPR is sending power to the Glowplugs. I think you are refering to the WTS or Wait To Start light (the loop shape on the dash). LS1_SEVEN is correct, an illuminated WTS does NOT mean your glow plugs are glowing.
Senior User
Joined: Nov 2007
Posts: 142
Likes: 0
From: Miami Beach, FL
Little update, it was slightly warmer this morning (44F vs. 38F) but regardless, after waiting for the glow plugs for about a minute (instead of just waiting for the light as yesterday), truck started fine so it seems everything is working fine.
Thanks for the tip guys!
Thanks for the tip guys!
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Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
One thing I was worried about was the diesel. I've heard that one problem with biodiesel is that it gels at low temperatures. I didn't know if the new ULSD might have those problems.
Senior User
Joined: Jun 2007
Posts: 459
Likes: 1
From: Rogers, MN
Yeah, there is something else going on. I have no problem starting my '03 at -10F when unplugged and just waiting for the glow plug light to go off. I have never cycled my glow plugs multiple times. The past week the temp has been between +5F and -25F and there has been no issues starting. It whines a little and runs a little rough for the first few minutes, but after I let it idle for a few minutes it is ok to drive. I am using a 15W-40 Synthetic.
If you are worried about fuel gelling, I would suggest that you use an additive to prevent gelling. You should ask your gas station if they use a winter blend of fuel. Up here, they pre-mix the fuel to help preventing gelling.
If you are worried about fuel gelling, I would suggest that you use an additive to prevent gelling. You should ask your gas station if they use a winter blend of fuel. Up here, they pre-mix the fuel to help preventing gelling.
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