Quote:
Originally Posted by oil pan 4
I recently did a test where I spun the P/S pump up to different speeds using a power drill, optical tachometer and kill-a-watt meter.
The results were at 850 RPMs the P/S pump took almost no power to spin at that speed only detected about a 150 watt draw.
The posibility of gaining any MPG improvement form a P/S delete were looking to be slim to none.
But when I did the test at a more normal cruising speed of 2000RPMs the P/S power consumption jumped to about 500 watts.
For a small car that turns higher RPMs on the highway that should make at least a 1MPG difference.
With my suburban a 500 watt accessory reduction should make at least a half MPG difference.
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Have you tested an alternator this way by chance?