just clicks when turn the key

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Mar 26, 2011 | 10:57 PM

aaronb734

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just clicks when turn the key

1999 550 7.3 starter good batteries good replaced solinoid,checked about everything minor.what could it be.if it sits for a hour or more it will crank over slowly but wont fire up,but then goes back to that single load click

Mar 26, 2011 | 11:04 PM

JT250

Cargo Master

Joined: Jan 2009

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From: OKC, OK

And u r sure the batteries are good?? Both of them? Are they both over 12 volts? Sure sound like weak batteries to me

Mar 26, 2011 | 11:05 PM

zx250

Of the next Riffraff East

Joined: Oct 2004

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From: Concord NC

Sure sounds like weak batteries, if not, then a bad connection somewhere.

Mar 27, 2011 | 09:57 AM

aaronb734

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12.5 both,i was in a jam with other 350 and 450 truck so i had to pull a battery out that 550 it started fine with one battery not plugged in and below 0.last week the 550 stalled as i let the clutch out has not fired up since,turned over a few times but 9 out 10 times just that loud click

Mar 27, 2011 | 10:25 AM

megawatt00

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Joined: Jan 2008

Posts: 13,144

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From: Rochdale MA

You probably ran the one battery down to nothing. The draw between the GP and the starter is huge. I ran an amprobe and saw 110A That is more than what most people have coming into their houses.
https://www.ford-trucks.com/forums/7...y-q-and-a.html