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Old 08-10-2009
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CSF Issue.

How do you fix:

Crankshaft Speed Fluctuation Sensor Intermittent Interruption P1336??

Thanks in advance!!

Last edited by Prerunner-Ranger; 08-10-2009 at 04:09 PM.
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Old 08-10-2009
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Anybody? :(
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Old 08-10-2009
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your harmonic balancer (behind the crank pulley) has slots. The slots send timing data to a small electronic sensor that is mounted near it.

I know this is true with a 4.0, it shouldn;t be hard to check it on a 3.o. I'm not sure.

On a 3.0 there is a cps (camshaft position sensor). Its on the back of the motor. Its basically the bottom half of a distributor that was still needed when the motor changed from distributor to coil packs. This operates the oil pump and it sends data for the timing of the motor. It has a plastic cap. The plastic cap is the sensor. A lot of engine failures have been blamed on this. If the teath on the gear where out you have innacurate timing and no oil pressure. Search cps and you will find a lot of info.

those are my two guesses.
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Old 08-10-2009
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Quote:
Originally Posted by graniteguy View Post
your harmonic balancer (behind the crank pulley) has slots. The slots send timing data to a small electronic sensor that is mounted near it.

I know this is true with a 4.0, it shouldn;t be hard to check it on a 3.o. I'm not sure.

On a 3.0 there is a cps (camshaft position sensor). Its on the back of the motor. Its basically the bottom half of a distributor that was still needed when the motor changed from distributor to coil packs. This operates the oil pump and it sends data for the timing of the motor. It has a plastic cap. The plastic cap is the sensor. A lot of engine failures have been blamed on this. If the teath on the gear where out you have innacurate timing and no oil pressure. Search cps and you will find a lot of info.

those are my two guesses.
Thanks for the feedback Wayne. I just recently changed my Camshaft sync brand new. I'm guessing when they rebuilt my engine and put it back in they never re-sync'd the crankshaft and the camshaft. Is this a possibility? Or is the sensor just in need of replacement? I know the 1337 codes means no signal from sensor. But I'm getting the intermitt 1336.

Just wondering if re-sync'ing it would fix it.
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Old 08-10-2009
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The timing chain is what syncs the crank with the cam. Unless you are talking about the cps being out of whack. i am not sure. Seems like it would run like crap if it wasn't lined up correctly.

When I pulled my CPS cap one thing I noticed was oil had made its way up. I wonder if that would throw the sensor off? That sensor seems like a cheap and easy thing to rule out.
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Old 08-10-2009
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side note, did you have your truck when you were up here? if so im really gonna kick myself for not being able to meet up. it was just a bad weekend for me with working late and stuff
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