Wait to start light - Ford Powerstroke Diesel Forum
General 6.7 Discussion (2011-2016) General 6.7 Discussion

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post #1 of 7 Old 08-22-2019, 04:35 AM Thread Starter
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Wait to start light

I know someone is going to think this is the stupidest question on the forum, but I'm asking anyway.
Just got a new to me 2015 F250, I have a 1999 7.3.
Question is my 99 has a wait to start light, so the glow plugs have time to do their job. The 2015 does not, and has remote start. Does it not have glow plugs, or am I just a dino and that technology has changed and the wait to start is not needed? I want to do what's best for the new truck, Lord knows its going to be with me awhile.
Also any suggestions on chips for fuel mileage? Its got 37 tires on it, wish it was a little lower(Im height challenged), but I can live with that for now.
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post #2 of 7 Old 08-22-2019, 04:56 AM
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The glow plug light on 2015 is very fast. I think you're just missing it -- it's not like the 'old days'.
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post #3 of 7 Old 08-22-2019, 05:02 AM
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Yeah. You still have a glowplug light. Or at least you should.

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post #4 of 7 Old 08-22-2019, 05:28 AM
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Look, you have one. Search the forums man, the "chip" discussion has been talked about a gazillion times.

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post #5 of 7 Old 08-22-2019, 05:31 AM
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There is a glow plug light on your new truck but they heat up WAY faster and much hotter than the old set up, I read somewhere they get up to over 2k in less than 3sec. Even in the dead of winter never seen it for more than a few seconds and it always fires off smooth and easy not a slow crank like the older ones that you can tell are still trying to warm up. Remote start is set up to give it that few second delay before starting
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post #6 of 7 Old 08-22-2019, 05:41 AM
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The starting sequence for the later model trucks is controlled by the PCM/ECU. You can turn the key and release it and the PCM will make checks and perform the start if the conditions are right. If the glow plugs need to be heated, the PCM will delay the starter.

Most times when the temp is above freezing, the 6.7 will start with no problems and not wait for the glow plugs to time out prior to starting.
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post #7 of 7 Old 08-22-2019, 04:56 PM
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As stated, the glow plugs in the 6.7 can reach 1500*+ in a little over a second. They are PCM controlled. You really won't see the "wait to start" light (which is now a orange pigtail looking light) unless its cooler outside and you catch it. These trucks start much, much easier than diesels of the past. In the summertime, they may not even come on at all...

I personally don't wait for the plugs in the summer and really only wait if its below 40*. Of course, its 105 in the summertime here, and only below 40* for about a month of the year where I am. YMMV

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