Loses power to coil and injectors sometimes.

If your fuel pressure isn't what is specified then that can be your problem. As far as changing coolant sensor there are two one is a sending unit and the other is a sensor. Whichone did you change and what engine do you have a 5.2-5.9-3.9 or8.0 or diesel? Also try cleaning the throttle body on both sides as it will cause stalling and hesitation as well. You need an actual GAUGE measurement not it's got plenty of pressure.

Camshaft Position (CMP) Sensor

1. DO NOT disconnect distributor connector. Using an analog voltmeter,  connect positive voltmeter lead to CMP sensor signal circuit (Tan/Yellow) at distributor wiring harness connector. Connect negative
voltmeter lead to ground circuit (Black/Light Blue wire) at distributor wiring harness connector. Set voltmeter to 15 volt DC scale.
2. With distributor cap removed,  manually rotate crankshaft until pulse ring enters sync signal generator on CMP sensor. Distributor rotor should point toward rear of engine. Turn ignition on. If voltage is about 5
volts,  go to step 8). If voltage is not about 5 volts,  check voltmeter leads for good connections.
3. Repair connections as necessary and repeat step 2). If connections are okay and voltage is still not about 5 volts,  check voltage at supply circuit (Violet/White wire) at CMP sensor harness connector. If voltage is
present,  replace CMP sensor. If voltage is not present,  go to next step.
4. Backprobe PCM connector and measure voltage between terminal A17 (Violet/White) and ground. PCM is located on right side of engine compartment. If no voltage is present,  see appropriate CMP sensor
circuit test in the TESTS W/CODES  5.2L article. If voltage is present,  go to next step.
5. Check continuity of supply circuit (Violet/White wire) between distributor connector and PCM. If no continuity exists,  repair wiring harness as necessary. If continuity exists,  go to next step.
6. Check continuity of CMP sensor signal wire (Tan/Yellow wire) between distributor connector and terminal A18 at PCM connector. If no continuity exists,  repair wiring harness as necessary. If continuity exists,  go
to next step.
7. Check continuity between ground and ground circuit (Black/Light Blue wire) at distributor connector. If no continuity exists,  repair wiring harness as necessary. If continuity exists,  go to next step.
8. Observe voltmeter and crank engine. Voltmeter needle should fluctuate from 0 5 volts. If voltage is as specified,  CMP sensor is operating properly and sync pulse signal is being generated. If voltage is not as
specified,  replace CMP sensor.

Check cranks sensor between terminals "B" & "C" at connector, if any reistance is shown replace ckp. Also do "wiggle" test at ckp sensor as it can be a poor connection.

Get one from a junkyard