1989 Chevrolet Astro Van Idles Good Seems Low Power Ve Taken Back Three

1989 CHEVROLET ASTRO
200,000 MILES
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ASTRO89CA
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My van idles good but seems to have low power. I've taken back three batteries to Walmart, so the battery is good. It just seems to have low power. I did tune up about three months ago. Could a bad plug cause low power?
Oct 22, 2012 at 1:35 AM
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