just ordered a sensor to give that a shot, will try the grounding test to see if it makes a difference

Runs perfectly fine once it actually starts, no noticeable issue

They wrote in their documentation: "inspected rpm sensor connector and terminals with no concern found. Preformed crankshaft endplay measurement finding endplay out of tolerance. Worn engine thrust bearings cause excessive crankshaft endplay resulting in a erratic engine rpm signal" I just...

I originally bought my 2007 XC70 with 1300 miles and it has had no major engine or transmission work and now has 82k miles. Over the past few years it has had intermittent issues starting where it turns and turns and doesn't fire, all while the tach is bouncing around. This issue seems to be MUCH wo...