Mechanics

I HAVE A PROBLEM WHEN I RUN AC

2002 Subaru Legacy • 101,000 miles

I have a 2002 subaru legacy with a 2.5 L engine it runs fine except after AC is on for awhile it bucks ang check engine light comes on and code comes up po852 which in book says nuetral safety switch and after running for awhile wthout AC on check engine light goes off, code clears and it stops bucking Please Help John M
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Srmrfish
August 7, 2012.



The bucking sounds like a secondary break down on either plugs. Wires or coil. Have them checked to confirm.

Roy

You could hae a bad ground ciruit connection somewhere.
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KHLow2008
Aug 7, 2012.

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