Question about Chevrolet Astro
If the failed are the O2 sensors, they send message error to PCM, then "check engine" must turn on, I dont think that this its the wrong, but check it.
Your car is equipped with a computer controlled engine management system. If the scan's computer for fault or error codes , this information should pinpoint the malfunctioning components. You tell us that dont showed any code, uhmmm. Your IDLE Speed Control motor is what we would look at. Also any vacuum leak, check it.
IF no codes are present then try testing the fuel pump with a gauge it should be between 55-65 psi, if not, replace the fuel pump.
Keep us update.
Posted on Oct 01, 2010
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Posted on Jan 02, 2017
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