I was stuck in traffic the other day and I noticed that my pw was jumping all over the place from 650 to1000 and it park from 450 to 600. I am getting ready to start to tuning my truck for a mpg tune and fingered this would be as any place to start.
This was in drive with my foot on the brake
This was at idle in park
This was in drive with my foot on the brake
This was at idle in park
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