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Old 08-02-2010, 04:30 PM   #1
silvervu
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2004 VUE 3.5L
1998 SW2
Wrench Re-assembleing timing belt,,Cps,?techll?relearning of crankshaft position.

I am installing a new timing belt,tensioner pulley,water pump,idler bearing.I have read in some of the manuals that make mention of a tech ll?for the relearning of the crankshaft position,sorry if thats off but i don't have the manual handy.If someone could shed some light on this i would be most thankfull.
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Last edited by silvervu; 08-02-2010 at 04:34 PM.. Reason: left out service i am doing.

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Old 08-02-2010, 05:05 PM   #2
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2003 VUE 3.0L
2007 VUE 3.5L
Default Re: Re-assembleing timing belt,,Cps,?techll?relearning of crankshaft position.

Quote:
Originally Posted by silvervu View Post
I have read in some of the manuals that make mention of a tech ll?for the relearning of the crankshaft position,sorry if thats off but i don't have the manual handy. If someone could shed some light on this i would be most thankfull.
From below, it sounds like the Tech II is a scan tool that can clear the CKP Pattern. Sounds to me like the PCM will do a relearn automatically.

"The Powertrain Control Module (PCM) has to perform the crankshaft position learn process under the following conditions:

1. The Crankshaft Position (CKP) sensor is removed for replacement or during disassembly.

2. The timing belt is removed for replacement or during disassembly.

3. The CKP Pattern Clear is executed from the Tech II.

4. The PCM is replaced"

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Old 12-11-2011, 01:07 PM   #3
JRSTANGE
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Default Re: Re-assembleing timing belt,,Cps,?techll?relearning of crankshaft position.

The crank relearn can be done with out a tech2. Simple disconnect the battery and touch the cables together for about 10 minutes to clear out any power in the system and reset the pcm. Also ensure the engine is cold and not been previously ran that day. Reconnect the battery and turn the key to the on position. clear the computer once again with any obd2 scanner. Start the engine and hold 3000rpm for 7-10 minutes or until the coolant temp has reached 194/7ish range. Basically until the fans kick on at 219ish. shut the engine down, pull the keyand restart it and let it idle for a bit and give it a drive. If I remember right thats the directions given to me by a old 13-15 year saturn tech friend. I had them printed off but, can't seem to find it at this moment.

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Old 12-12-2011, 04:32 AM   #4
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Default Re: Re-assembleing timing belt,,Cps,?techll?relearning of crankshaft position.

For the '04 3.5L engine, no mention of a crankshaft relearn is needed when replacing the cps, pcm or timing belt, in the service manual.

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