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First off I have a 2000 neon es that was running pretty good until just yesterday. While I was driving I noticed it start to act wierd. when I would press the gas it would stall a little and then take off also when I took my foot off the gas it would still revv a little then stop, also as I was driving the car began to jerk and act as if was going to cut off. I pulled these codes off the car

P0462 Fuel Level Sending Unit Volts Too Low Fuel level sensor input below acceptable voltage.

P1391(M) Intermittent Loss of CMP or CKP Loss of the Cam Position Sensor or Crank Position sensor has occurred.

can somebody put those in lamans terms and tell me how to fix them please. I have to get back and forth to work next week and need my car reliable. thanks in advance for any help I get with this.

I think the driveability problem has to do with your 2nd code, P1391.
You have either a bad cam or crank sensor, or wiring or the connector going to one of those may be damaged somehow.

Fortunately, cam and crank sensors on a Neon are pretty straightforward to replace, if you change them yourself.
Do you know where they are located ??

- Nick

NickKo wrote:I think the driveability problem has to do with your 2nd code, P1391.
You have either a bad cam or crank sensor, or wiring or the connector going to one of those may be damaged somehow.

Fortunately, cam and crank sensors on a Neon are pretty straightforward to replace, if you change them yourself.
Do you know where they are located ??

- Nick

the cam one is on the left side of the head right? I dont know about the crankshaft one

Yes, try changing that and see if it gets better.

You really shouldn't post it in two places like this, but hey i'm IBTL so oh well...

when replacing the CMP sensor do you have to change the target magnet also?

No

Only if somehow it is cracked.

occasional demons wrote:No

Only if somehow it is cracked.

thanks

Would bad gas or water in the tank cause me to have these faults ?

so i change out both CMP and CKP sensors and oddly the P0462 code dissappears but the P1391 code stays and im still having the same problem why?

playboy2k4 wrote:so i change out both CMP and CKP sensors and oddly the P0462 code dissappears but the P1391 code stays and im still having the same problem why?

Does the car run normally now ? Then you have probably fixed it.

Keep in mind that the code has to be 'cleared' from the memory.
You can either clear it yourself "manually", or keep driving it, and the code will clear itself eventually, if the problem is fixed.

- Nick

NickKo wrote:

playboy2k4 wrote:so i change out both CMP and CKP sensors and oddly the P0462 code dissappears but the P1391 code stays and im still having the same problem why?

Does the car run normally now ? Then you have probably fixed it.

Keep in mind that the code has to be 'cleared' from the memory.
You can either clear it yourself "manually", or keep driving it, and the code will clear itself eventually, if the problem is fixed.

- Nick

nope problem is not fixed. Still doing the same thing as before

playboy2k4 wrote: nope problem is not fixed. Still doing the same thing as before

Aha..... That would explain the code, then.

The only other obvious thing, would be a wiring problem, most likely at the connector itself.

I would start by checking the connector itself, make sure they are not saturated with oil or that the terminals themselves got damaged.....also check the wires going to and from those sensors.

Good luck, and keep us posted.

- Nick

UPDATE: got tired of messing with it and needing it back on the road in a hurry, I took it to Dodge................................ 2 DAYS AGO !!!!!!!!!!!! still no answer back from them now life is harder than ever with one car and having appointments all over town and alot of other shit to do. So I know i'm about to trash thrown at me, but now i looking for a honda. hahahaha something cheap and reliable that gets me back and forth to work