stupid glow plug/starting question - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 04-04-2010, 04:27 PM   #1 (permalink)
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stupid glow plug/starting question

are the newer trucks, set up diffrent than the older ones,
as far as starting,
the old ones ,,if you started before the glow plug "wait-start" went out
you could burn out the glow plugs,

if you just get in and start the truck without waiting,8-10 sec,
2000 F250,
will it burn out the glow plugs,,,

jp
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Old 04-04-2010, 05:02 PM   #2 (permalink)
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No - the glow plug system stays on for 20 seconds or more after the light goes out dependent upon oil temperature. You will not burn them out by starting before the light goes out. The light isn't even a function of the glow plug relay, rather it is controlled by the PCM.
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Old 04-04-2010, 09:13 PM   #3 (permalink)
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Quote:
Originally Posted by dray8165 View Post
No - the glow plug system stays on for 20 seconds or more after the light goes out dependent upon oil temperature. You will not burn them out by starting before the light goes out. The light isn't even a function of the glow plug relay, rather it is controlled by the PCM.
so your saying you can just jump in and start the truck-instantly- with no bad effect on the glow plugs???
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2000 F-250 XLT ,6spd, Short,bed, (when I bought it, 134,000)
6637 DIY Air Filter, EV2 Pyro,Boost Gauge,Muffler-Delete (came that way),Turbo Rebuild with Billet RiffRaff Wheel,(Balanced)
Turbo and Spider, Painted Red,Intercooler-Tubes,Painted,RED,NON-EBPV Pedestal,Painted,RED,EBPV valve delete Mod
TurboMaster WasteGate controller
DRK Blue CPS, "Black" one in the Glovebox
1-9000 longmile trip
now sportin 175,000

24ft alpenlite,sliding hitch, for those days when civilization isnt so civilized
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Old 04-05-2010, 12:12 AM   #4 (permalink)
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Quote:
Originally Posted by 2000Ford250 View Post
so your saying you can just jump in and start the truck-instantly- with no bad effect on the glow plugs???
Yes, that's right. The glow plugs can operate for up to 2 minutes if its really cold, even if the engine is running. If the engine temp is above a certain point, the PCM doesn't even activate the GP's.

On the 99 & up trucks the glow plugs are either on or off. I understand that the older trucks cycled the GP's on and off to avoid burning them out.
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