Question about 2003 Pontiac Sunfire
Starter stayed engaged and fried. New starter almost did same,ignition switch stuck. New ignition switch ,now starter operates normally BUT, engine starts right up, then quits as soon as ignition switch is returned to run posion. $400.00 so far ,What next?
My bet is that you have an open the fuel pump run circuit or the vacuum switch. Most GMs have a vacuum switch to 'see' the engine running and reduce pressure by cutting voltage. However, if your car has a turbo or supercharger, they use a relay that 'flips' to a resistive line which then cuts the power level to the pump. Get a good model-specific diagram and check it out.
Posted on Jul 23, 2008
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Posted on Jan 02, 2017
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