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Code 44 indicates a lean mixture at the oxygen sensor and it could be a variety of things from a vacuum leak, a bad fuel regulator, or a bad fuel pump. Also those engines were known for bad distributor shafts. It is best to take it to a mechanic.

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โˆ™ 2014-10-07 02:15:58
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Q: How do you fix a code 44 on a 1994 Astro van with the Vortec engine?
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