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Old 04-16-2010, 05:15 PM   #1 (permalink)
dbunn
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Glow plugs / Wait to Start light / GM factory auto start

I have the GM installed factory auto start on my truck. I noticed that the auto start seems to start the truck immediately in the morning when it is cold without waiting for the glow plugs to warm up. I can stand outside the truck and view the dash and see that the wait to start symbol is still illuminated when it cranks.

Does this sound right to you guys? It doesn't to me, but maybe I am missing something. Is there a fix for this?

Background - my prvious truck had an Viper autostart. There were two dofferent install methods form Directed Elctronics. 1st - Using a diode against the wait to start light. 2nd - Using a relay to delay the ignition sequence by a certain delay of time (30 sec). The method depended on how the light on the dash was illuminated.

As a result, it would seem to me that the autostart should make sure the glow plugs have warmed before starting. I know they are fast warming glow plugs, but in cold weather it still takes a couple seconds for them to warm up the first start of the day.

Your thoughts?

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Old 04-16-2010, 05:54 PM   #2 (permalink)
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Hi,

I noticed the same thing this winter but the truck never had problems starting. With the old F250 7.3L I had to wait about 30 sec to start the bad boy.

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Old 04-16-2010, 06:29 PM   #3 (permalink)
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I understand that you have a dealer installed starter, but is it made by another company or is it the one that came in the truck?
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Old 04-16-2010, 06:40 PM   #4 (permalink)
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I understand your post but these trucks start under most situations, regardless. Here in So-Can never had issues, what ever the temp with the remote LOL.
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Old 04-16-2010, 07:08 PM   #5 (permalink)
dbunn
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It is the factory GM remote start - I upgraded to the Advanced two way remote - either way it is factory.

It starts but does have a slight stumble in cold weather. I read previous threads stating basically that it started regardless of plugs but I thought maybe there was an update at GM that someone was aware of that fixed this issue.
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Old 04-16-2010, 09:34 PM   #6 (permalink)
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Guys - the GM factory installed remote start works directly off the Canbus (GM LAN). It gets the glo-plug (heated fuel rail) signal through the Canbus. The Directed, and all other aftermarket starters with some exception, use one of two methods to establish the time to start --

1) Straight timer (usually set to 30 seconds by default - bad method)
2) Glo-plug light sensing - connected to the Glo-Plug indicator light (proper method)

Whoever said that it starts regardless of the Glo-plugs, is wrong. These starters are quite sophisticated, unlike the aftermarket units. They rely on the Canbus signals for virtually everything and even start through the Canbus, unlike the aftermarket products that are wired to the ignition switch. Aftermarket starters have a myriad of features, most quite useless, but the factory starter is built specifically for this platform.
They (aftermarket starters) pale in comparison to the factory remote start setup. You've got nothing at all to worry about with the factory remote start, despite the almost non-existent delay. Today's diesels require almost no preheat time before starting. I start in -35c with the key in under 2 seconds all the time. You may also notice that the aftermarket remote starters tend to either overcrank or undercrank quite often, due to the tach signal variances between various platforms/vehicles. Nothing will beat a GM factory installed remote start for perfect starts each and every time, regardless of environmental conditions.

I own a distribution company that has sold hundreds of thousands of remote starters over the past 18 years and have personally been involved in the design and manufacturing of several big name brands over the years.
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Old 04-17-2010, 06:31 AM   #7 (permalink)
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Quote:
Originally Posted by FBA View Post
Guys - the GM factory installed remote start works directly off the Canbus (GM LAN). It gets the glo-plug (heated fuel rail) signal through the Canbus. The Directed, and all other aftermarket starters with some exception, use one of two methods to establish the time to start --

1) Straight timer (usually set to 30 seconds by default - bad method)
2) Glo-plug light sensing - connected to the Glo-Plug indicator light (proper method)

Whoever said that it starts regardless of the Glo-plugs, is wrong. These starters are quite sophisticated, unlike the aftermarket units. They rely on the Canbus signals for virtually everything and even start through the Canbus, unlike the aftermarket products that are wired to the ignition switch. Aftermarket starters have a myriad of features, most quite useless, but the factory starter is built specifically for this platform.
They (aftermarket starters) pale in comparison to the factory remote start setup. You've got nothing at all to worry about with the factory remote start, despite the almost non-existent delay. Today's diesels require almost no preheat time before starting. I start in -35c with the key in under 2 seconds all the time. You may also notice that the aftermarket remote starters tend to either overcrank or undercrank quite often, due to the tach signal variances between various platforms/vehicles. Nothing will beat a GM factory installed remote start for perfect starts each and every time, regardless of environmental conditions.

I own a distribution company that has sold hundreds of thousands of remote starters over the past 18 years and have personally been involved in the design and manufacturing of several big name brands over the years.
I was having probs with my remote start during the colder temps. Its the Factroy setup. The past month its been starting without a hickup. Seemed to be related to Colder Temps=NoStarts. Guess I'll wait till next year to see if I'm right.
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Old 04-17-2010, 07:31 AM   #8 (permalink)
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What is colder in Texas? Mine- factory remote start -was flawless through Canadian winter.
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Old 04-17-2010, 10:00 AM   #9 (permalink)
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My remote start works fine in new england winter. There is a pretty good "delay" from when the lights of the truck acknowledge the fact that I hit the button to time the truck starts. I dont recall the truck starting right away when I hit the button at any point in the cold which would seem to validate FBA's explanation.
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Old 04-17-2010, 11:43 AM   #10 (permalink)
LambofGod
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Good Post!

Quote:
Originally Posted by FBA View Post
Guys - the GM factory installed remote start works directly off the Canbus (GM LAN). It gets the glo-plug (heated fuel rail) signal through the Canbus. The Directed, and all other aftermarket starters with some exception, use one of two methods to establish the time to start --

1) Straight timer (usually set to 30 seconds by default - bad method)
2) Glo-plug light sensing - connected to the Glo-Plug indicator light (proper method)

Whoever said that it starts regardless of the Glo-plugs, is wrong. These starters are quite sophisticated, unlike the aftermarket units. They rely on the Canbus signals for virtually everything and even start through the Canbus, unlike the aftermarket products that are wired to the ignition switch. Aftermarket starters have a myriad of features, most quite useless, but the factory starter is built specifically for this platform.
They (aftermarket starters) pale in comparison to the factory remote start setup. You've got nothing at all to worry about with the factory remote start, despite the almost non-existent delay. Today's diesels require almost no preheat time before starting. I start in -35c with the key in under 2 seconds all the time. You may also notice that the aftermarket remote starters tend to either overcrank or undercrank quite often, due to the tach signal variances between various platforms/vehicles. Nothing will beat a GM factory installed remote start for perfect starts each and every time, regardless of environmental conditions.

I own a distribution company that has sold hundreds of thousands of remote starters over the past 18 years and have personally been involved in the design and manufacturing of several big name brands over the years.


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