crank relearn ???

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Jul 4, 2004 | 08:48 AM

1a-play

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From: VA

crank relearn ???

has anyone ever had this done- I'm not getting any codes but I feel the hp is down. what is done with the tech2 to do the relearn- has anyone seen it done? please explain the proceedure- thanks

Jul 4, 2004 | 02:44 PM

Fulton 1

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From: WA

Its a procedure that's generally only needed when you install a new PCM, a new crank or crack sensor, or a new engine altogether. The Case Learn helps the PCM detect misfires while accounting for normal variations in crankshaft speed. Its done on a TechII usually, but I think HPTuners, et. al, can do it too. With the TechII the menus should just walk you through the procedure. IIRC, on a Tech II it can be found under the Diagnostics Menu + Special Functions... not 100% sure on that though.

Jul 4, 2004 | 02:46 PM

distortion_69

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From: Jonesboro, Ga

Does the dealership usually charge to do this?

Thanks,
Josh

Jul 4, 2004 | 02:47 PM

Cerebrex

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the dealership will charge for looking them in the eyes. they charge for anything.

Jul 4, 2004 | 02:51 PM

Fulton 1

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From: WA

Oh I imagine they'll charge you, but shouldn't be bad. Its about a 5-10 minute process. Just make sure they know what they're doing -especially if you have aftermarket tuning. If you're not careful they may reflash your PCM instead or in addition to.

If there's a question, have them lookup DTC P1336 - that calls for the Crankshaft Position Variation Relearn Procedure.

Jul 4, 2004 | 04:14 PM

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From: VA

I don't have a miss but like I said power seems low- I did put in a new crankshaft- the ring may have been put on 5 degrees off- I took it off the old shaft- will this relearn help