slow cranking 7.3 - Diesel Bombers



Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 07-03-2010, 03:32 PM
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Default slow cranking 7.3

Hey guys,

I have a 2001 f350 7.3. It has been cranking slower and slower over the last few days and this morning I was lucky it turned on at all it was cranking so slow. I checked out the voltage on the batteries and they checked in at 12v each. I have noticed that the mirror lights were flickering yesterday, very lightly, but was flickering.

I need help guys, im down to my last truck and I need to get this one back up.

Thanks for any and all help

Randolph
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Old 07-03-2010, 04:14 PM
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they might test to twelve volts, but not have the cca of a new battery. ive had batterys that would test to 13 v and not start my truck
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Old 07-03-2010, 05:27 PM
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take em out & have them load tested
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Old 07-04-2010, 11:42 AM
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Taking them out...can I take them to like an auto zone? How do you rule out the starter?

Thanks guys
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Old 07-04-2010, 11:49 AM
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Quote:
Originally Posted by psd77066 View Post
How do you rule out the starter?

Thanks guys
id your batteries fail the load test then thats most likley your problem and some new batteries should fix u up
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Old 07-04-2010, 04:15 PM
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you can drive to A Z and have them tested just un hook both batts befor testing
to rule out starter put power dirctley to the starter from under the truck
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Old 07-05-2010, 10:44 AM
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Load test batteries individually first. Then you need to do a starter amp draw test... Just clip amp meter around positive cable to starter and crank engine.. note amp draw..... Most likely you got a battery getting week or cable that is in need of a good cleaning.....
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Old 07-05-2010, 10:51 AM
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Quote:
Originally Posted by wmorrispilot View Post
Load test batteries individually first. Then you need to do a starter amp draw test... Just clip amp meter around positive cable to starter and crank engine.. note amp draw..... Most likely you got a battery getting week or cable that is in need of a good cleaning.....
yes, i wouldnt worry about the starter untill u know that its not your battery,
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Old 07-06-2010, 01:36 AM
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Yes..I think you guys are right... I took both batts in to AZ and they told me one of them was bad... so I bought one and charged the other one, but its still cranking way slower than normal...maybe the second batt is still low?

I will see what it does in the morning.

Thanks again guys
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Old 07-06-2010, 12:12 PM
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i understand that batteries can be $$$ but if i were you i would go ahead and replace both of them, especially if they're fairly old. sure just replacing one right now might do the truck, but u don't want to be havin this problem again for a while. just my opinion
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