2002 Dodge Neon Car will turn over but will not start

2002 DODGE NEON
145,000 MILES • 4 CYL • FWD • MANUAL
Avatar
JOYWHISE
  • MEMBER
  • 1 POST
used an obd2, received reading of p1391 (camshaft or crankshaft sensor) replaced both, also replaced plugs, plug wires and ignition coil. now there are no codes on the obd2 but the car still will not start. fuel is getting to the fuel rail. what else could be the problem?
Apr 7, 2008 at 2:09 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Do below and see what happens

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel problem, check the fuel pressure to rule out the fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light.

Fuel pump and Injector/s checks out-start checking the ignition system-power to coil, coil/s itself,distributor pick-up,control module, Cam and Crankshaft sensors.

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time
Sep 7, 2017 at 4:38 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.