The crank position sensor On your astro is located
on front of the engine on timing cover, left side.
Behind the crankshaft pulley. with a connector of 3 wires.
It should be at the bottom front of the engine by the timing cover.
Do you have a 4.3L with a distributor? If so, the crank sensor is in the distributor and may also be called an HEI pickup or Hall switch.
location of 3 sensor of 97 Chevy astro van?
Chevy did not use a crank sensor on that year.
A
Yes it did. I own (still) a 1990 Astro camper-conversion van with crank up windows.
It does not have 1.
front of the engine under the crankshaft pulley
I had same problem -- fuel pump went out.
Attached to the side of the throttle body.
Camshaft position is taken from the distributor, there is no separate sensor.
where is the oxygen sensor in a 2004 astro van