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Showing results for tags 'rough idlevoltage drop'.
Hey guys, I recently picked up a 2004 GMC Savana Quigley 6.0 with about 183k miles. It has a couple issues that I was hoping other guys would have some good advice on. Its hard to start cold and has to be kept running for a few minutes before it will idle on its own. After that, it has a low idle and can stall if you're steering in a parking lot and get off the throttle too suddenly. The last issue is that when you come to a stop like at a light or stop sign, the voltage will drop from around 14 to about 9 then take several seconds to climb back up to 14 again. There is no check engine light,