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ss ute idle?

vyjess

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hi just purchased vs ss series 3 ute and i have noticed that the engine revs rise bout 100rpm at idle every 3 or 4 seconds! just wondering if any body knows whats causing it to do that or any ideas where to look 4 a problem? cheers
 

vyjess

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thats what i thought but havnt found any yet! the only thing i have noticed was every time the revs increased the alternater made a noise so i put a multi meter on batt and found that every time this happens the volts drop from 14.4 to 13 and even with alternater unhooked it still has a voltage drop every time revs rise! got me beat.
 

Tony.

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Have you posted anything in the My Commodore section?

I love the VS III SS Ute! Really would love to get one!
 

vyjess

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just worked out how to check my engine codes and have a 23 32 and 35 any help on what they mean? cheers
 

vyjess

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still havnt found me problem causing my idle to change. i have cleaned throttle body and maf and checked 4 air leaks but still nothing! dose any1 have any ideas the ute seems to run fine apart from this annoying idle! the voltage drop i mentiond b4 was caused by the ac fan wires shorting out!
 

vt s

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I might of said alternator overcharging but the voltage drops...
 
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