Cold starting / weird starting? - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-05-2013, 12:22 PM Thread Starter
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Cold starting / weird starting?

Yes, its another cold starting thread. Temps last night were in the 20's with mid 40's today and I forgot to plug it in last night. WTS light went off, still gave it another 20 seconds or so prior to cranking. Once it hits, the whole truck shakes back and forth just like you were stomping on the pedal and immediately letting off. Then, after doing it a couple of time or so, it goes to normal idle. It did this with the old GPR, so I put in a Stancor. Obviously still does it. Any ideas? 2000 - 7.3 - 118k miles, mods listed below.

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post #2 of 11 Old 01-05-2013, 08:44 PM
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I have the same problem, my mechanic thinks it may be the IPR valve. I am having it scanned this week to confirm.


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post #3 of 11 Old 01-05-2013, 08:53 PM
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Sounds to me like a typical cold start?

Your glow plugs are to fire your fuel, but if your oil is cold, it'll be harder to start since cold oil isn't as viscous as warm.

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post #4 of 11 Old 01-05-2013, 09:18 PM
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What are you running for oil??

Quote:
Originally Posted by bjs505 View Post
Of course I'm handy under the hood, I currently own a cummins.

2010 F350 CCLB Cabelas Edition
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01' 7.3 CCLB, 6637,wicked wheel G2, HPX, PHP Hydra, MBRP 4" Turbo back, Bellowed uppipes, Stancor gpr, 6.0 cooler, Fpr, Glow shift exhaust, pyro, trans, 203*/billet housing/ Cat EC-1, '07headlights/05' grill, Oh8' gate.
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post #5 of 11 Old 01-05-2013, 09:53 PM Thread Starter
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Motorcraft 15/40. But, not cold enough to cause that I wouldn't think.

JR
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post #6 of 11 Old 01-05-2013, 10:40 PM
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Switch to a 5w40 and it'll stop.

03 F-250 7.3L, Sport, 4x4, Auto

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post #7 of 11 Old 01-06-2013, 06:13 AM
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I don't ever remember my truck shaking like that with 15w40...?

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post #8 of 11 Old 01-06-2013, 12:29 PM
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sounds like you are getting the romps lol
i would check oil level, check your icp sensor make sure their isnt oil
coming through it. then possibly change your oil.


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post #9 of 11 Old 01-06-2013, 01:11 PM
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Quote:
Originally Posted by Zander's 5.8 View Post
Switch to a 5w40 and it'll stop.

Agree mine has never done it since I switched.

Quote:
Originally Posted by bjs505 View Post
Of course I'm handy under the hood, I currently own a cummins.

2010 F350 CCLB Cabelas Edition
No Limit cai, Mini Maxx, 5" turbo back Flo Pro, Sinister egr delete, Sinister coolant filter, Cat EC-1, PTP shift solenoid. 20x9 +18 XD Monsters
01' 7.3 CCLB, 6637,wicked wheel G2, HPX, PHP Hydra, MBRP 4" Turbo back, Bellowed uppipes, Stancor gpr, 6.0 cooler, Fpr, Glow shift exhaust, pyro, trans, 203*/billet housing/ Cat EC-1, '07headlights/05' grill, Oh8' gate.
78' F350 "dumpy" old school
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post #10 of 11 Old 01-08-2013, 08:43 PM
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I dont buy that change the oil crap. I have used 15/40 delo 400 for the past 4-5 yrs and never had the romps even with sub zero weather. Granted 5/40 will help it start easier, its not necessary and may not cure your issue.

This past yr I have done a lot to my truck and it just started to have a romp issue. Changed to 5/40 synthetic and still have the issue. Found a faulty injector. Will find out if it cures the issue.

You need to run diagnostic software to see if anything is going on. Could be a few different things. If you never had an issue but you do now, very unlikely its the oil itself. Something else is going on and hopefully its not tired/worn out injectors.


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