Wont start when its cold - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 03-27-2013, 03:29 AM Thread Starter
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Wont start when its cold

I have a 2000 F-250 that when its below 40 F it wont start unless its plugged in. Even at 40 it's slow starting. I checked the glow plugs and they are working. There are no codes except exhaust backpressure which has been on since i installed an exhaust brake. Any ideas.
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post #2 of 17 Old 03-27-2013, 11:18 AM
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Batteries......you checked-the ohm's of each glow plug?
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post #3 of 17 Old 03-27-2013, 11:47 AM
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I had the same issue with my 99 a few times. There is a censor in there (I can't for the life of me remember which one) It was easy to change though. Back then it was like $37.00 to fix.
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post #4 of 17 Old 03-27-2013, 11:50 AM
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Cam Shaft Sensor.............it's already been a long freaking week!
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post #5 of 17 Old 03-27-2013, 12:00 PM
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Batteries sound weak, that's why its slow to start when its been plugged in. Cam position sensor will not allow the truck to start at all....its not the CPS that's the problem. It sounds like your glow plug relay is bad. You can test it by taking a DC volt meter and checking across the large terminals on the gpr. When key is off you should see battery voltage. When key is turned on, you should see zero volts across the same terminals. And you should hear a loud "click", telling you its working. If you still see battery voltage, then the gpr is bad.

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post #6 of 17 Old 03-27-2013, 03:51 PM Thread Starter
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The batteries are brand new. The glow plug relay is clicking and getting voltage to the glow plugs. What should the ohm reading be? I can't remember what mine was but i will check them again.

Last edited by mcmullentrucks; 03-27-2013 at 03:51 PM. Reason: misspelling
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post #7 of 17 Old 03-27-2013, 04:03 PM
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0.8 - 1.2 ohms
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post #8 of 17 Old 03-27-2013, 04:35 PM
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Slow crank sounds like batteries, or battery cables. Hard start could be a number of things, but I'll guess that you're running 15W40, and if you switched to 5W40, it would be a little better for you. Try plugging it in if you can. If that solves the hard start, my money will be on oil.

**reread first post. Plugging it in works. I say oil, since your GP's are checking out good.

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post #9 of 17 Old 03-27-2013, 04:42 PM Thread Starter
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I dont think its the oil since i have owned this truck since 05 and never had an issue before this year. I also have a 97 that i run the same oil in and it starts fine.
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post #10 of 17 Old 03-27-2013, 08:45 PM
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I have the same problem with my 2002 im getting ready to do a icp

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