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97 Neon overheated, now won't start


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bobcoop06
09-27-2009, 09:03 PM
My girlfriend's 1997 Neon (2.0L SOHC) overheated a couple of weeks ago. The radiator had a hole in it, and she didn't know it. I replaced the radiator and thermostat, and now I can't get it to start.

First thing I checked was the oil, it looks good, no water or anything. The car has good compression, and turns over. Fuel pressure reads nearly 60psi. It will start and run while spraying ether, but won't stay running. There seems to be no injector pulse. I checked the codes via ingnition, and got the following codes:

11- Timing belt skipped 1 tooth or more from initial learned value; Intermittent loss of either camshaft or crankshaft position sensor. No crank reference signal detected during engine cranking

12- Direct battery input to PCM was disconnected within the last 50 key-on cycles

17- Closed loop temp not reached or engine cold too long

22- Engine coolant temp sensor out of range


I changed the Cam Position Sensor and checked the wiring, it's all good. I also went ahead and changed plugs and wires. I would think that if it were the crank position sensor, or the timing belt, it wouldn't crank or start on ether? I am at a loss here. The car only has 70K miles, so it's not ready to be scrapped.

Help??????

das2123
09-28-2009, 08:05 AM
FSM Failure to start test:

1. Disconnect the harness to the coil pak.
2. Connect a test light to the B+ center terminal connector of the harness and ground.
3. Turn the ignition to ON. The test light should flash on then off. Leave the key in the on position.
a. If the test light flashes momentarily, the PCM grounded the ASD relay (proceed to step 4).
b. If the test light does not flash, the ASD relay did not energize. The cause is the relay or one of the relay circuits.
4. Crank the engine. If the test light flashes momentarily during cranking, the PCM is not receiving a signal from the crankshaft position sensor.
5. If the test light did not flash during cranking, unplug the crankshaft position sensor connector. Turn the ignition key to the off position. Turn the key to the On position, wait for the test light to flash momentarily once, then crank the engine. If the test light momentarily flashes, the crankshaft position sensor is shorted and must be replaced. If the light did not flash the problem is in either the crankshaft position sensor/camshaft position sensor 8 volt supply circuit or the camshaft position sensor output or ground circuit.

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