very weird cold start this morning - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 02-10-2011, 01:08 PM Thread Starter
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very weird cold start this morning

It was 3 degrees last night, and about 8 degrees when i started up my truck this morning. Truck was NOT plugged in, and I cycled the plugs for 40 seconds each time 5 times. I cranked it, it cranked for 2-3 seconds like normal fires up, idles at 900 drops to 700 for a second and cuts out. It did this twice and then it was perfectly fine. I have never had any issues before, does this sound like an FICM thing? I have the VXCF7 FICM flash right now with a VXCF4 Looney wild tune loaded right now.

Any insight here? Keep in mind where i live at school my apt complex has no out door outles, i've been starting unplugged all winter even at -9 degreed F and no issues whatsoever

Thinking it could be the FICM starting to go on the fritz, or maybe the stc fitting leaking? Oil pressure reading at 80psi at idle on a cold start and fuel pressure dead on a 59 psi at start up.
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post #2 of 15 Old 02-10-2011, 01:28 PM
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sounds like glow plugs are going out.

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post #3 of 15 Old 02-10-2011, 08:09 PM Thread Starter
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Thanks to my new friend Rick, ran the truck on AE and came through passed all tests with flying colors.... maybe just bad fuel or a fluke

Glowplugs - within spec
FICM - within spec
Injectors - within spec
IPR and ICP - within spec

If anything else happens ill keep you posted
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post #4 of 15 Old 02-11-2011, 05:35 AM
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You don't really need to "cycle" the glowplugs. They remain on for 120 seconds at key-on. The glowplug lamp is an indicator for you to allow them to properly warm up and not an indicator that they have shut off. By cycling them repetitively you are increasing the amperage draw (which is significant) on the batteries. Cold weather is very demanding on batteries of course. Rather than cycle them, just wait for a bit longer after the "wait" light goes out (it's a "wait" light on the HMMWV). You could have some fuel gelling causing the cut out after start up. Check your fuel filters for their condition. Make sure you are using a diesel fuel additive in the cold weather such as Motorcraft Cetane Booster and Performance Enhancer in the blue bottle or the white Power Service bottle. If you do have gelled fuel, then add some Diesel 911 or similar product.

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post #5 of 15 Old 02-11-2011, 05:39 AM
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Dont cycle the glow plugs. thats what causes your issue.

Get in. wait for the light to go off ONE TIME and crank it

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post #6 of 15 Old 02-11-2011, 09:58 AM
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Your VXCF7 is a FICM killer. I would check it just because. Then I'd get it flashed with a PHP FICM tune to get the VXCF7 off of it as soon as possible. It might not be a bad idea to send it off to Swamps and get it rebuilt and flashed.
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post #7 of 15 Old 02-11-2011, 10:03 AM
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8 degrees?!?!?
thats friggin cold...coldest start ive had this year was 24 degrees...and thats the coldest its been down here in 20+ years

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post #8 of 15 Old 02-11-2011, 10:07 AM
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Not to sound like an idiot or anything but what is sct fitting? I'm new to this forum and diesels thanks

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post #9 of 15 Old 02-11-2011, 10:08 AM
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Quote:
Originally Posted by THE SILVER BULLET View Post
8 degrees?!?!?
thats friggin cold...coldest start ive had this year was 24 degrees...and thats the coldest its been down here in 20+ years
Puzzy

Try -20 yesterday Started great not plugged in

Email: Dave@powerstroke.org
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2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #10 of 15 Old 02-11-2011, 10:09 AM
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sorry stc fitting

2005 Super Duty 6.0L
Bullydog programer
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Vent Visors
Omega Remote Start
Zoodad
BF Goodrich TA KO Tires
Back Flip Hard folding tonneau cover
Recon smoked cab lights
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