Harder to start the colder it gets - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 11-25-2008, 06:57 PM Thread Starter
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Harder to start the colder it gets

I have a 99 250 7.3 L. I hope some one can help. The colder it gets, the harder it is to start but not the normal. Starts getting hard around 40F. If I disconnect the batteries and hook them up right before starting it's fine. If I let it set overnight with the batteries hooked up; it starts if it is warm out but gets harder to start the colder it is. It dosen't matter how cold it is if I have the batteries charged and hook them up right before starting. When it is difficult to start, it starts cranking fine but quickly slows as if the batteris are dead. It has two new batteries 995cold cranking amps at32F. It pulls 23mA at rest I don't believe I have any stuck relays. Suggestions Unfortuantely, I can't afford to take it somewhere right now.
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post #2 of 7 Old 11-25-2008, 06:58 PM
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starter going south?

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post #3 of 7 Old 11-25-2008, 06:58 PM
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maybe a short on your ucvh's

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post #4 of 7 Old 11-25-2008, 07:03 PM
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Well how low does your voltage go on the gauge while cranking? And it starts so hard because there are 8 glowplugs that take plenty of amps to work, then a large starter that takes a ton of amps, there's a reason there are those heavy amperage batts under there. Try letting the glowplugs on for a full minute instead of just when the wait to start light goes out, it'll have an easier time starting.

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post #5 of 7 Old 11-25-2008, 07:05 PM
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do you have any after market things likefog lights,stereo,if so check fuses on them and check your glowplug relay

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post #6 of 7 Old 11-25-2008, 07:44 PM
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check your voltage drop on the battery cables while cranking should be .5 volts on both power and ground. and also check battery voltage while cranking. just holler if you need more in-depth instructions.

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post #7 of 7 Old 11-25-2008, 07:48 PM
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