Thanks guys. I suppose I'll try to clean the sensors this weekend, and see if that helps. If not, I'll add that to my punch list of stuff to mess with. Ahh, so many things, so little money.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual