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Wait to Start??

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Old Apr 26, 2004 | 02:39 PM
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Wait to Start??

Since I’m new to this diesel business I am always forgetting to wait for the “Wait to start” light to go off. I try to watch it but I guess I’m just to excited to hear my truck run. Anyhow, what is the impact of forgetting to always wait for the light to go off?
 
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Old Apr 26, 2004 | 03:11 PM
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None that I know of, it's just easier to start if you wait and give the glow plugs time to heat up.
 
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Old Apr 26, 2004 | 03:18 PM
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If it does hurt anything I've never read anything about it here on FTE - BUT... that doesn't mean that it can't! Try to get in the habit and before long it'll be second nature. I hopped in a truck at work the other day to move it and turned the key and waited...... o yea it's a gasser. Felt like a 'tard.
 
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Old Apr 26, 2004 | 03:29 PM
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Cat-man

Hey nothing wrong with waiting for a gasser either. If you wait justa second all the components of the truck or car gets a second to cycle and the computer to do a self check before cranking it over.

Fire rooster
 
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Old Apr 26, 2004 | 04:42 PM
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It's understandable, I did the exact same thing when I test drove one. Then I did a little reading and figured out that I had to wait. What most of us do is: get in, turn the key to the first position, and put on our seatbelt. By the time you finish putting on your seatbelt, the glow plugs will be done and you can safely start your truck.
 
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Old Apr 26, 2004 | 06:25 PM
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Speaking of the wait to start, and the glow plug warmup. I knew that the glow plugs kept heating , even after the engine started for a period of time. But I did not know how long. Since I installed an aftermarket volt guage, I now see that apparently the glow plug relay does not turn off until about 30+ seconds after mine starts up.

Is that normal?
 
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Old Apr 26, 2004 | 06:42 PM
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Yes, that's normal but there is no set period of time that they turn off. When the engine is warm enough according to the computer they will shut off.
 
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Old Apr 26, 2004 | 06:51 PM
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Originally Posted by johnsdiesel
Yes, that's normal but there is no set period of time that they turn off. When the engine is warm enough according to the computer they will shut off.
Gotcha. I don't see much difference in time from when I go to work when its cool, to when I come home when its 20 degrees warmer, but the sensor and computer may be measuring something different than water temp or ambient temp. With the original volt guage, I didn't even know it was staying on this long. Kind of like my oem oil pressure guage. Just went to one spot, and lived there.
 
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Old Apr 26, 2004 | 06:53 PM
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Ya, the oil pressure gauge is a joke.
 
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Old Apr 26, 2004 | 07:08 PM
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What year trucks are we talking about here? The late 97s and up Only come on if Needed. The older trucks are timed. My WTS light comes on for a half second when the truck is warm But if you watch the Amp gauge the Plugs dont cycle and as far as I know the older trucks cycle every time to key is turned on.
 
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Old Apr 26, 2004 | 07:11 PM
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My 1997 cycles the glow plugs every time, but they don't stay on for a fixed period of time. If it's warm outside they are only on until I turn the key and when it's cold they stay on for much longer.
 
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Old Apr 26, 2004 | 07:15 PM
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Originally Posted by BigBully
What year trucks are we talking about here? The late 97s and up Only come on if Needed. The older trucks are timed. My WTS light comes on for a half second when the truck is warm But if you watch the Amp gauge the Plugs dont cycle and as far as I know the older trucks cycle every time to key is turned on.
Bigbully,

When I first turn on the ignition switch , I hear the electric fuel pump energize for a few seconds, and the wait to start light comes on. My voltage drops to 11 volts. Even after the engine starts, the voltage remains at 11 volts for more than 30 seconds, then goes up to close to 15 volts. Like clockwork. The only thing I can think of that could draw that much current is the glow plugs, or that would continue after starting. Mine is a 2000.

Also, I need to amend something. This is only happening at the first start after sitting several hours, such as overnight, or all day. If I stop at the gas station, for example, and shut it off for 10 minutes, this current drain does not happen. Voltmeter instantly goes to 15 volts at startup.

My Wait to start light goes out very fast on a warm engine. Maybe 1 to 2 seconds.
 

Last edited by TJC1989; Apr 26, 2004 at 07:21 PM.
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Old Apr 26, 2004 | 10:35 PM
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Originally Posted by Toreador_Diesel
What most of us do is: get in, turn the key to the first position, and put on our seatbelt. By the time you finish putting on your seatbelt, the glow plugs will be done and you can safely start your truck.
This is the exact same thing I did when I test drove mine. I guess it's a good thing I'm getting a diesel. It reminds me to put on my seat belt. I hardly ever do with my current gasser.
 
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