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Recently it seemed to me that my glow plug light took longer to go out than it used to. Hadn't ever timed it, but just seemed to take more time.
Today I did time it. Took 9 seconds at 57 degrees with rain.
Is that about right?
Stock 2005 F250/6.0 with 31k miles
I'm not yet worried about it, just seems like a long time to me.
the light to the best of my knowledge is only a timed light and does not indicate the length of the glow plug "run" time. the best way to know how long the glow plugs stay on for is to install a volt meter gauge. it will linger around 12v until the glow plugs kick off then the volt meter will climb to around 13.5 to 14v.
but to answer your topic, yes they do.
05' silver f-350 lariat 6.0 psd 4x4 crew cab drw, 4"inch turbo back exhaust, BPD oil cooler condenser mount, powermax turbo,dc power 190Amp OEM High Output Alternator , coolant filter, auto meter: boost, coolant temp, trans temp, egt, voltage. scan gauge II, Rds 91 gallon fuel tank toolbox combo, ready lift 2.5 leveling kit, blue spring mod.Fumuto oil drain, AE w/ford enhanced bundle.Air lift 5000 series rear air bags
I'm not sure how the glowplug timer is controlled.
The Pcm will read temp of the coolant once the key is cycled then depending on the temp of the coolant decides how long to run the glow plugs...and if suspected bad the rail has to be removed and each pulled out of the head. then use a OHM Meter put red lead on the small threaded end and the other on the GP body..OHMS should read low showing little resistance.
__________________ White 2004 F250 6.0 CC SB Auto FX4. Mods 4" Mbrp TB, Amsoil Bmk-11 By-pass,Intakelbow.com polished elbow,Napa #4019 coolant filter kit,Autometer Boost/Coolant Guage. 1990 Mustang LX 2.3L Turbo 400RWHP.
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