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cold weather starting experience
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=80678		 Page 1 of 1
Author:  CGman [ Tue Nov 18, 2014 12:48 pm ]
Post subject:  cold weather starting experience
Well I got busy last night and forgot to put the jeep in for the night ( or plug her in) and it got down to 5 deg F (-15 C) about the time i tried to start her. Needless to say, she turned over good with the new AGM battery but she refused to fire more than one or twice in a row. I then went out to the 06 Cummins that had been facing North and hasn't been driven all week. After letting the intake heater cycle it caught on the second try. Wouldn't you know that was the vehicle with no seat heaters! :banghead:
Author:  weeks101 [ Tue Nov 18, 2014 2:20 pm ]
Post subject:  Re: cold weather starting experience
What glow plugs are you running?

7v ceramic (OE)
5v steel (Bosch)
7v steel (Etecno)

Also what starting procedure are you following (how long are you running the glow plugs before cranking)?
Author:  Layback1962 [ Tue Nov 18, 2014 4:10 pm ]
Post subject:  Re: cold weather starting experience
Also what starting procedure are you following (how long are you running the glow plugs before cranking)?[/quote]


Dont want to hijack this, but thought after the glow plug light goes off it was ok to trun it over?

Or what / how do you let them stay on longer?

Thanks, Layback
Author:  papaindigo [ Tue Nov 18, 2014 4:51 pm ]
Post subject:  Re: cold weather starting experience
Regardless of glow plugs you should be using a) winter fuel (not under your control but..); b) adding some winter fuel treatment like Power Service white bottle; and c) as you know plugging it it.

That said the glow plug duty cycle, per the FSM, is as follows "When the ignition is turned on, the ECM activates the glow plug relay for a time period that is determined by engine coolant temperature, atmospheric temperature and battery voltage." The duration of the glow plug light is only loosely related to the duty cycle, see pg 8i-12 of the 05 FSM. Generally speaking I'd think it would be safe to attempt start once the light goes off although some recommend doing, key on, wait for light to go out, key off, key back on, and crank once light goes off it the weather is really cold.
Author:  dirtmover [ Tue Nov 18, 2014 5:25 pm ]
Post subject:  Re: cold weather starting experience
Layback1962 wrote:
Dont want to hijack this, but thought after the glow plug light goes off it was ok to trun it over?

Or what / how do you let them stay on longer?

Thanks, Layback

We had a good discussion on this with some demos last winter viewtopic.php?f=5&t=78212#wrapheader
Author:  CGman [ Tue Nov 18, 2014 5:31 pm ]
Post subject:  Re: cold weather starting experience
weeks101 wrote:
What glow plugs are you running?

7v ceramic (OE)
5v steel (Bosch)
7v steel (Etecno)

Also what starting procedure are you following (how long are you running the glow plugs before cranking)?


Using 7V steel, #1 may not be working because I busted the plastic cap off changing the "bad" one I just put on the Jeep in January. No winter diesel fuel additives. It's 35 deg F now and had been plugged in all day so I'll make sure she starts tonight. I let the glow plug light go off and then wait a sec or two before cranking.
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