The pulleys sometimes separate and need replacing. There should be a schematic on the fan shroud.
The Astro does not have a flywheel, it has a flexplate. To remove it you have to remove the transmission so you can unbolt it from the crankshaft.
The 1997 Chevy crankshaft sensor can be found on the back of the engine. You will need to remove the rear engine cover in order to access the crankshaft sensor.
most part stores sell just the pulley bearing are ussaly press in so you need the pulley
SHOULD BE THE BELT DRIVEN ACCESSORY DIRECTLY ABOVE THE CRANKSHAFT (LOWEST BELT DRIVEN ACCESSORY ON ENGINE)
No. There is no such thing. TAke it to a local garage and have it properly diagnoised and an estimatee for repair.
there may be two. one on the block facing the radiator fan close to the trans, the other under the crank pulley
right side of crankshaft pulley
Looking at the bottom side of the front of the engine at the crankshaft pulley, the CKP is at the 10 O'Clock position of the crankshaft pulley
Pulley above the crankshaft pulley (lowest on engine)
The main pulley on which the serpentine belt goes on in a 1997 Chevy Lumina LTZ is the crankshaft pulley. The crankshaft pulley plays a role in the wheels turning and powering the alternator and power steering pump.
There is a crankshaft pulley, alternator pulley, power steering pump pulley, AC pulley, idler pulley, tensioner pulley, etc.
The crankshaft position sensor is mounted on the front of the engine near the crankshaft pulley . Looking from the front it is to the left of the crankshaft pulley and is triggered by the teeth which are machined into the crankshaft damper (Chilton) You can see it from underneath the Explorer
bottom of engine where belts go
if it has a v6 it's behind crankshaft pulley,if its a 4 cyl.in the block
That should be at the front of the engine by the crankshaft pulley / harmonic balancer
The timing sensor is called a Crankshaft Position Sensor (CKP). It is located at the 10 O'Clock positon on the crankshaft pulley.
Remove belt, remove crankshaft bolt with air impact tool, remove balancer pulley with a balancer puller. Then you will be able to get to it.