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1990 Chevrolet Astro Question: Failed emissions test



malampley, 4.3L V6, North Las Vegas, NV, February 05, 2010, 19:08

Ideal speed HC greater than 220 parts per million reading was 595 parts per million note the Van ia a 1988

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  • Answer #1

    February 05, 2015, 16:15

    Could be a bad catalyst, bad air pump, hard to say. A worn out engine will fail too.

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