First check to see if there are any connectors that are not fully seated and may have loosened up due to vibrations. The Crankshaft position sensor is on the lower rear of the engine below the oil filter, I'll post a diagram of its location. But does the Tachometer jump while cranking the engine over?
This diagram is looking at the front of the engine when you open the hood. In yellow is your oil filter housing, below that is the crank position sensor. The 2nd diagram shows the wiring colors for it, it's a 2-wire sensor, make sure it's still plugged in and being under the oil filter, see if there is any oil leaking on it
Images (Click to make bigger)
Sunday, May 14th, 2023 AT 7:14 PM