JustinRamSRT10
Full Access Member
Hey guys. Quick question. For the last week my check engine light has been on. I noticed about 3 days ago that my tach will sometimes drop down to as low as 200 rpm when coming to a stop. I know the engine is not running that slow lol. But as soon as I just barely touch the throttle, it rapidly shoots up to 1000rpm and continues on as normal. Has anyone experienced this before? I suspect it has something to do with the crank sensor. It just so happens that my scan tool from snap on was defective and I won't have another one for a least a week.