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Is replacing a Crankshaft Position Sensor a solution?

 
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Old 24 Sep 2012, 03:30 pm
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Default Is replacing a Crankshaft Position Sensor a solution?

Is replacing a Crankshaft Position Sensor always a solution to the p0339 code and check engine light flashing (while driving) then solid after turning off/on again?

I cleared the code by removing the negative battery cable for a while and the code did not come back yet.

Had the sensor replaced today, but have not yet made the long 20 mile drive home where the problem has happened before.

Had noticed before the code was thrown that there would be a hiccup or hesitation for just a fleeting moment on occasion while driving at speeds above 50. But that was happening more often just before the code was thrown a few days back and before replacing the sensor today.

The mechanic told me it is probably the main computer that is the problem and usually is not the Crankshaft Position Sensor but replaced it at my request since i'd already bought it and asked them to replace it for me.

Has anyone fixed this kind of problem replacing the sensor only?
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Last edited by oldorange; 24 Sep 2012 at 03:36 pm. Reason: i can spell, really...
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Old 24 Sep 2012, 03:45 pm
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

Yes, a few owners have had problems and a few different codes and either the Camshaft or Crankshaft sensor fixed the problem depending on the code shown.
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Old 24 Sep 2012, 03:55 pm
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

If your mechanic is replacing computers instead of sensors I think you should look for a new mechanic.
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Old 24 Sep 2012, 04:12 pm
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

ray, not sure what I implied, but he mentioned from his experience that it's not usually the crankshaft sensor, but the main computer that is the problem in these cases, or a connection somewhere. His shop cannot replace the computers anyway so he has no vested interest in this as a solution. In fact he would not have have even replaced the sensor if I had not brought it to him and just asked for it to be replaced. that's the reason I started the thread to see if this fixed a similar problem for anyone...

occasional misses and hiccups while driving at highway speeds, then they slowly get more prevalent, then finally a code for the Crankshaft Position sensor getting thrown, then when the code is cleared, it does not immediately return again.
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Old 25 Sep 2012, 07:56 am
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

And I hope the sensor is Mopar - aftermarket sensors don't last - some don't work at all!
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Old 25 Sep 2012, 08:17 am
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

Quote:
Originally Posted by oldorange View Post
ray, not sure what I implied, but he mentioned from his experience that it's not usually the crankshaft sensor, but the main computer that is the problem in these cases, or a connection somewhere. His shop cannot replace the computers anyway so he has no vested interest in this as a solution. In fact he would not have have even replaced the sensor if I had not brought it to him and just asked for it to be replaced. that's the reason I started the thread to see if this fixed a similar problem for anyone...

occasional misses and hiccups while driving at highway speeds, then they slowly get more prevalent, then finally a code for the Crankshaft Position sensor getting thrown, then when the code is cleared, it does not immediately return again.
I just don't understand that way of thinking. If you are getting a code for that sensor even if it seems intermittent you check the wiring and replace the sensor. Replacing the computer should be a last resort.
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Old 25 Sep 2012, 12:17 pm
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

Thanks, hopefully I will not be sorry that I got it from Pepboys (with a lifetime warranty !) and hopefully it will resolve the issue. Time will tell, it was replaced yesterday and so far no new codes.
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Old 25 Sep 2012, 09:49 pm
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Default Re: Is replacing a Crankshaft Position Sensor a solution?

If it isn't Mopar, you might be a Redneck.

That wisdom being thrown out there, I have noticed that mechanics who do not work a lot on PT's, use the experience they've learned from problems with other cars--especially since some believe that all modern cars are just the same car, anyway, but with a different name.

But generic wisdom is not specialized wisdom. And as we all know, the PT has a special way of reacting when it's not getting what it needs.

Computers are the last thing to look for when a code is thrown. A sensor or a connection to it is the first place to look.

A little story:

I went to a reputable shop here in town to get my daughter's Honda smogged. When I went to pick it up, the mechanic said they had a problem and they had not found out what it was. I owed them $165.00 labor for the time spent looking for the problem--that they still hadn't found or fixed. "When do you want to bring it back in?", the mechanic said. "Never", I answered.

I immediately took the Honda to a guy who works only on Hondas, and he found a loose connection at a smog related piece. He cleaned it, pinched it, and the car smogged.

The moral of the story is that generic shops are like M.D.'s--not specialized doctors in a particular field. Computer/sensor problems can be tricky. I'll go for the specialist every time in that case. In fact, I won't let anyone work on my Honda except Norm's Honda, here in town. And when the PT needs something I don't want to fix--or can't--I go to the dealer.

Tim
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