Quote:
Originally Posted by DaleTx
This might be a stretch... but I'm just throwing out ideas.
One other idea would be to check the tension on the serpentine belt to make sure the belt is not slipping when the air conditioning compressor turns on, causing low system voltage.
It's no fun when you have glitches on a new build... but we've all been there 
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Hi Dale,
Voltage drop came to mind when it first happened. We measured voltage at the pump when FP was in the low 30s psi, and it showed 13.5V (but then AC was not on). The belt tensioner is within recommended range, and the belt is tight with no slack. One of the guys in our group had some issues with Aeromotive pumps in his LS1, and switched over to ACDelco pump and had no issues since. He suggested I do the same. I wished I had data logged it on the trip back.
One positive thing during the trip is the gas mileage. I put in 2 times less gas than the rest of the group, and that put me in around 30 mpg range.