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Crank position sensor relearn

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Old 06-30-2004, 11:53 AM
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Default Crank position sensor relearn

Hi Guys
I have question - I replaced my Cam and have been tuning my PCM (slowly). I was reading some old postings and somebody stated that you should perform a Crank position sensor relearn after replacing the Cam and doing tuning. When I have not done that and was wondering if I should do it or leave well enough along?
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Bill
Old 06-30-2004, 04:26 PM
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The ECM will let you know if it can't learn the crank position - it will throw a code P1336 "Crankshaft Position System Variation Not Learned".

If you have no code, you shouldn't need to worry.

BTW - only a Tech II tool (dealer) or newer verions of EFILive software can do the CASE relearn as far as I know.

Normally it only needs to be done when replacing the PCM or the crank reluctor/sensor.

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Old 06-30-2004, 06:00 PM
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Originally Posted by Bad30th
The ECM will let you know if it can't learn the crank position - it will throw a code P1336 "Crankshaft Position System Variation Not Learned".

If you have no code, you shouldn't need to worry.

BTW - only a Tech II tool (dealer) or newer verions of EFILive software can do the CASE relearn as far as I know.

Normally it only needs to be done when replacing the PCM or the crank reluctor/sensor.

Bad30th
HP Tuners is adding that feature pretty soon. It is one of those things people wanted and they are adding.
Old 07-01-2004, 08:31 AM
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Thanks - I have the latest version of EFILive, so I could do it but there are no codes. I will leave well enough alone.
Bill
Old 07-01-2004, 12:08 PM
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You can also do this with some models of Snap On scanners, you can rent ti at Pep Boys.




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