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  #1 (permalink)  
Old 23 Aug 2011, 01:16 pm
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Default 0340 Code

So i have been doing a lot of research here the last few days and it seems a LOT of people have had to replace there CAM shaft position sensor or there Crankshaft sensor. Every year for the last 4 years i have had to replace the Cam sensor. And every time it's fine for 12 months. This summer however i have replaced it 4 times in one month and it hasnt solved the issue.
My car will run fine for 20 minutes then start dieing and refuse to start again till it cools down.

So i have read it could be the crank shaft sensor OR the wire harness.

My question is were abouts is the wire harness were it tends to have the issue?
Were is the Crank sensor located? i Seen the pic Crewzin posted. He said it was below the oil filter. Were is that exactly? It's a very tight fit and really hard to see under the hood.

i plan to check the wires first, then replace the crankshaft sensor.

I have a 2001 Touring edition.

Last edited by Jaimez; 23 Aug 2011 at 01:23 pm.
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Old 23 Aug 2011, 04:15 pm
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Default Re: 0340 Code

While looking for the Crankshaft sensor i noticed a "ground" wire broken on the driver side behind the wheel.
You can see it in the first picture. I did a quick fix as you can see in pic #2.
Apparently the same wire on the passenger side is broken as well. Could this be my issue? or is it completely unrelated to me crank/cam sensors?


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File Type: jpg 2ptground.jpg (92.8 KB, 72 views)
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Old 23 Aug 2011, 04:25 pm
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Default Re: 0340 Code

Jaimez,

Hopefully, when your replacing any sensor, your using only a Chrysler/MOPAR part. Any electrical part from an auto store is a knock-off piece and doesn't last very long. If you aren't using a Chrysler part, maybe that is your entire problem.

Second, you read it wrong on the crankshaft sensor if your PT is a 2001-2003. The sensor is right ABOVE the oil filter, not below. If you have a 2004+, the Crankshaft sensor is behind the starter.

The wiring harness problem that myself and others have had is from the CAMshaft sensor and it runs around the back of the engine and is held on by a couple of $.02 clips that can break and let the harness hang down low enough that the harness can touch a moving part and damage the wires.

Lastly, the wires on your wheel well are for radio interference and static electricity. Don't think it could affect the sensor, but you never know what static electricity can do. Read this.

ground wires from body to front struts?

Last edited by CREWZIN; 23 Aug 2011 at 04:28 pm.
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Old 23 Aug 2011, 04:41 pm
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Default Re: 0340 Code

If im standing in front of the car and the CAM sensor is on my right, were is the Crankshaft sensor? i cant even see the oil filter. i'm gona try and get under the car tomorrow.

oh and thanks for the help!
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Old 23 Aug 2011, 06:11 pm
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Default Re: 0340 Code

Your cam shaft position sensor is under the air box
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Old 23 Aug 2011, 06:12 pm
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Default Re: 0340 Code

Your welcome for the help but if you can't see the oil filter, you must have never been under your car. You can't miss it.

OH! I get it now, your looking for the oil filter from standing in front of the car!. Only a few cars in my lifetime have ever had the oil filter that you could see from above.


Last edited by CREWZIN; 23 Aug 2011 at 06:16 pm.
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Old 24 Aug 2011, 04:35 pm
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Default Re: 0340 Code

So i checked my wiring today as best i could and it seems ok. I located the CKP sensor. Its reachable using a regular jack and removing the passenger side front wheel.
I also exchanged the Cam Sensor one more time.
besides the green rubber seal is there an "INNER" seal that goes in the block? There was oil all over the inside of the sensor.
I have been using Autozone sensors but they have worked fine in the past for at least a year at a time. i cant afford to buy a Mopor one right now.
I'll be hitting up "pic-a-part" and getting a CMP and CKP sensor for $6 each.
I did notice the connecter to the CMP is a little loose, so i might be replacing that soon as well. I wana do one thing at a time to try and nail down the problem.
On a side note. Apparently i knocked a vacuum hose loose somewhere cuz now theres a huge hissing sound when my car is running. it's somewhere behind the CMP. Engine is to hot right now for me to mess with.
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Old 09 Sep 2011, 01:18 pm
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Default 0320

so i got my hand on a couple ramps so i could finally get under my car. My wiring to the CKP sensor is in fact loose and rubbing against the Driveaxle boot.

My question is. should i just cut that section (less then a foot) and replace it all? What method should i used to to replace the wiring? Wiring joint caps/connectors? Stripping quick splice/Joints?
Or does the whole wiring harness under the hood need to be replaced?





*edit*
Oh and i didnt see a clip or broken clip that holds up the wiring. were exactly is it supposed to be clipped to?
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File Type: jpg DSC00319.JPG (57.7 KB, 56 views)
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Last edited by Jaimez; 09 Sep 2011 at 01:25 pm.
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Old 09 Sep 2011, 01:42 pm
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Default Re: 0340 Code

The clips that were holding the wiring harness on mine, (that broke) were for the Camshaft sensor not the Crankshaft sensor (CKP) as your saying. There were two of them that ran parallel along the block up away from anything that was moving. Can you get close enough to see if the actual wiring inside the sleeve was damaged? If the wires are intact, no need to replace the harness, just tape it up good and get it away from the boot. My wires were actually severed and the mechanic just cut the harness, soldered the wires back together, wrapped them all up and put them out of harms way. Been good for about 4 or 5 years now.
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Old 09 Sep 2011, 01:53 pm
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Default Re: 0340 Code

Some of the wiring is damaged, but not all the way through. Probably why my car still runs but after a while breaks down. I just taped it up for a temp fix. And used some string to pull the wiring off the boot.
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