Now my engine wont start why?

This sounds like the crankshaft angle sensor or the fuel pump has gone out, when you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds? These guides should help us fix it.

https://youtu.be/dCjmRL3p4Cs

and

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

Please run down these guides and report back.

Hi, if it cranks good but won't start. Have a helper crank it, while you visually check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure. To check for spark, you can pull plug wire, stick known good plug/spark tester in the boot. Ground metal part of plug/tester to metal part of engine, have helper crank, watch for spark.

Hello,

If you are getting fuel and you have spark, then I would suggest doing a compression test. Here is a link that will explain how to troubleshoot your situation:

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

Alex,
2CarPros

You seem to have replaced and checked everything else. May as well check the ASD relay and wiring. Although this supplies ground to coils and you must have ground for it to fire cylinders 2 & 3? Also check the slots on outer edge of flywheel/flexplate or on crankshaft counterweight. And the slots in cam timing sprocket or check you are getting pulse from these? CKP pulse wire is grey/black the CMP pulse wire is tan/yellow

AUTO SHUTDOWN (ASD) RELAY & FUEL PUMP RELAY
ASD relay and electric fuel pump relay are energized when ignition is on. These relays are controlled through PCM by switching a common ground circuit on and off. Following components are controlled by ASD and fuel pump relays:
Electric Fuel Pump
Fuel Injectors
Generator Field Winding
Ignition Coil(s)
HO2S Heating Element
When ignition switch is turned to RUN position, PCM energizes ASD relay and electric fuel pump relay which powers these components. If PCM does not receive a CMP and CKP sensor signal within one second of engine cranking (start-up), PCM will turn ground circuit off and de-energize ASD relay.

On Distributorless Ignition System (DIS), CMP sensor reads slots in cam timing sprocket. PCM uses this information along with information from Crankshaft Position (CKP) sensor to determine if fuel injectors and ignition coils are properly sequenced for correct cylinders.

CKP is a Hall Effect-type sensor. On some vehicles, CKP sensor is mounted on left rear side of transmission bell housing. On other vehicles, CKP sensor is mounted on right rear side of block, near cylinder head. Sensor reads slots on outer edge of flywheel/flexplate or on crankshaft counterweight. Each slot causes a pulse to be generated as it passes under CKP sensor. Signal generated provides engine speed and CKP information to PCM, which along with other input signals, determines fuel injection sequence, ignition signal and spark timing.

If your saying it won't even crank, check the starter circuit. Make sure battery has a full charge and connections are good.

If it cranks good but won't start, have a helper crank it, while you visually check for spark at the spark plugs. If you have spark everywhere, use a gage and check fuel pressure. Some of the national brand auto stores used to loan out a fuel pressure gage, if you don't have one. To visually check for spark at the plugs, pull a spark plug wire loose, use known good plug or spark tester in the boot, ground metal part of plug/tester to metal part of engine, engine cranking, watch for spark.

Check for applicable mil codes, where possible.

The fuel pump will only run for one second when you turn on the ignition switch, then again when the engine is rotating, (cranking or running). When Chrysler fuel pumps fail, they almost always fail to start up. Once they do start up, they rarely stop while they are running. If you do not hear the hum of the pump for that one second when you turn on the ignition switch, you can often get them started by banging on the bottom of the gas tank. If that works, it can be expected to stay running until you stop the engine. The problem may not occur again for weeks or months, but it will gradually get worse over time. Sometimes this only works when you bang on the gas tank while a helper is cranking the engine.

If the vehicle cranks good but won't start, have a helper crank it while you check for spark at the plugs. If there is no spark, check for primary voltage at the coil and injectors, dark green wire orange tracer, check for voltage, engine cranking. This sounds like the crankshaft angle sensor or the fuel pump has gone out, when you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds? These guides should help us fix it.

https://youtu.be/dCjmRL3p4Cs

and

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

Please run down these guides and report back.

You might also check for codes. Cycle the key, on--off, on--off, on. By on I mean, turn the key till the dash lites come on, no further. The check engine lite starts flashing, you count the flashes to get the codes.

Unplug cam sensor see if it starts, if yes check your tining belt...test sensor this way....do not drive with sensor unplugged.

Correct. Error code 54 indicates that there is no cam signal at the powertrain control module (PCM). You should have it replaced. If you are mechanically inclined and would like instructions on replacing than let me know and I will post them. Otherwise have your local garage repair it for you.

Check out the new page for your problem....

https://www.2carpros.com/first_things/car_cranks_but_wont_start.htm