Crankshaft pos sensor, would code reader pickup err? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
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post #1 of 4 (permalink) Old 09-18-2006, 12:27 PM Thread Starter
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Question Crankshaft pos sensor, would code reader pickup err?

I have a 2000 intrepid 2.7L. Through using this site I found that the likely culprits to my problem were either the camshaft or crankshaft position sensor. Using the Haynes manual I have it said to turn over the crankshaft pulley using a socket wrench and a breaker bar; but the only way I could see to get my hands in there to do that was to take off the front of the car.

I tried the key trick for error codes and it only returned the 1684 (battery nonsense), the check engine light never came on but the cruise light did.

Seeing no other option, I tried and tried to start the car and when it did I quickly drove it to the local shop where they confirmed it was the crankshaft position sensor.

My question is, would an OBDII code reader (like the Equus 3100C 100 dollar model at carquest) have picked up this error? Or do you need some fancier model and if so how much would I need to spend? Is there an easier way to test these sensors than getting a socket on the crankshaft pulley?
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post #2 of 4 (permalink) Old 09-18-2006, 09:52 PM
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As far as the reader is concerned, if it can read code history--a historic code-- which most can, it could have picked up the fault, even if the check engine light wasnt on, which would mean the fault was inactive.

I have always checked them with an Ohmeter== (either open or NOT open-- car usually doesnt run at all)== or with a scanner that has a data display, that can read RPM and CKP/CMP correlation. Scanners can run anywhere from $100 basic, to $1000 for something with a data display, and $3000 up depending on what your needs are.

In your situation, I would recommend replacing the sensor, especially if a shop, and a parts store have confirmed it. You probably have the new style (cheap) sensor, with a 2000, so it will cost you about $25 from the Dodge dealer.

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Last edited by Daytrepper; 09-18-2006 at 09:59 PM.
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post #3 of 4 (permalink) Old 09-19-2006, 12:57 AM Thread Starter
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Actually I had the shop fix it, only because the odds of it starting again and getting home were about as good as winning the lottery. They raked me over the coals.

I tried to test this with an ohm meter as well, do you crank over the motor with the key? Turn the shaft by hand? How do you complete the test with the Ohm meter?

I backprobed the sensor and hooked one end up to it and the other to a ground, I just couldnt get the crankshaft turned by hand and wasn't sure if I should try to test this by turning it over with the key.
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post #4 of 4 (permalink) Old 09-19-2006, 11:17 AM
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I usually pull the sensor out, first check it for open circuit, then run a screwdriver past the business end of the sensor quickly, and several times (to simulate a tone ring). Its a crude way, but it works, and is easier than trying to turn the crankshaft and read the ohmeter, and keep it hooked up to the sensor all at once. A good sensor will make the ohm readings change on the meter.
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