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post #1 of 4 (permalink) Old 11-02-2010, 08:25 PM Thread Starter
 
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Slow Crank?

Ive tested the battery several times and it outperforms its CCA rating and the battery terminals dont look too terrible but ive cleaned them anyway.
The pattern I see is that it cranks worse If I try to start it back up right away as opposed to letting it sit for an hour or so.

Also it cranks just fine with a battery charger attached.

Thanks

Harry
1986 Firebird LG4
Flowmaster American Thunder Cat Back, B&M Shift Kit, Edelbrock performer intake and carb
2006 GTO LS2 M6
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post #2 of 4 (permalink) Old 11-03-2010, 06:12 AM
 
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Sounds like our notoriously crappy cable ends not getting a good connection on the posts since you said you load tested the battery. Should be one of those two.

<-- Guess which ones quicker?.....Nope! Not even close.
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post #3 of 4 (permalink) Old 11-03-2010, 06:31 AM
 
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Slow crank may be heat soak on the starter or grounds. My 454 was doing this. I got a gear reduction starter on it and the problem went away. It may be time for a new starter if all cables are good.

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post #4 of 4 (permalink) Old 11-05-2010, 06:22 PM Thread Starter
 
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OK cool thanks guys

Harry
1986 Firebird LG4
Flowmaster American Thunder Cat Back, B&M Shift Kit, Edelbrock performer intake and carb
2006 GTO LS2 M6
Nothing Yet!
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