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Old 08-12-2018, 07:02 PM   #37 (permalink)
ksa8907
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Join Date: May 2012
Location: Tampa, FL
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Volt, gas only - '12 Chevrolet Volt Premium
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Quote:
Originally Posted by MetroMPG View Post
I've experienced a vacuum leak on a MAF hose before, and it was similar, but not as bad as these symptoms.

I'm up to 8 cold starts with no probs since putting the Metro's coil back in.

However the car did throw a p0400 code on a 200 km trip this weekend. Intermittent EGR valve problem (I've seen it once before). I wonder how a stuck-open EGR valve would make it run.


I need to take it off & clean the valve &passages.
Bad, very bad. Had an egr that was slow to close, would die everytime it came to a stop. Finally figured it out when I logged engine parameters on a drive. IAT shot to over 250 in mere seconds, only thing that gets that hot is.... exhaust.
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MetroMPG (08-15-2018)