Engine swap

Good morning,

The 3.1 and 3.4 are the same block. The 3.4 is a little bigger internally than the 3.1 but they are the same and will work fine in the car.

What is the exact issue with the car?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Roy

When you crank the engine, do you get a RPM on the tachometer? That will tell you if the one is working.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

The other crank sensor is for the injectors.

Roy

REMOVAL PROCEDURE
1. Turn OFF the ignition.
2. Remove the serpentine drive belt from the crankshaft pulley.

CAUTION: Refer to Vehicle Lifting Caution in Service Precautions.

3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Remove the crankshaft harmonic balancer.
5. Note the routing of the sensor harness before removal.
6. Remove the harness retaining clip with bolt (1).
7. Disconnect the sensor electrical connector.
8. Remove the sensor bolts (2).
9. Remove the sensor.

INSTALLATION PROCEDURE
1. Install the 24X crankshaft position sensor with bolts (2) and route harness as noted during removal.

NOTE: Refer to Fastener Notice in Service Precautions.

2. Install the harness retaining clip with bolt (1).

Tighten
Tighten the bolts to 10 N.m (8 lb ft).

3. Connect the sensor electrical connector.
4. Reinstall the balancer on the crankshaft.
5. Lower the vehicle.
6. Reinstall the serpentine drive belt.
7. Perform the CKP System Variation Learn Procedure. See: Vehicle > Programming and Relearning

Behind the motor

REMOVAL PROCEDURE
1. Turn OFF the ignition.
2. Crank the steering wheel fully to the left.

CAUTION: Refer to Vehicle Lifting Caution in Service Precautions.

3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Disconnect the sensor electrical connector.
5. Remove the attaching bolt/screw.
6. Remove the sensor from the engine.
7. If the sensor is not being replaced, inspect for wear, cracks, or leakage.

INSTALLATION PROCEDURE
1. Lubricate the O-ring with clean engine oil before installation and replace if damaged.
2. Install the sensor to the block.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Reinstall the sensor attaching bolt.

Tighten
Tighten the bolt to 8 N.m (71 lb in).

4. Connect the sensor electrical connector.
5. Lower the vehicle.