Pcm Learning time...
12-20-2003, 10:04 PM
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Pcm Learning time... I just ordered a re programmed pcm from westers. I was wondering if there anything I need to unplug before or after the installation of the new pcm and how long should it take for the car to get use to it? Also should I disable the tq management..been hearing its really tuff on the stock tranny if its not enabled.
12-21-2003, 01:01 PM
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Basically what is learned is the adaptive shifts and the fuel trims.
Q: If you "ordered a programmed PCM",why would you want to know NOW about TM - either that was removed or was not by the "programmers"?? See other posts on TM, but unless you have modified tranny and rear, I'd leave TM in.
Do follow ALL the supplied instructions, follow all EMI/RFI/ESD and grounding precautions (if you don't know about these, please have a qualified service technician perform the PCM replacement!), and I would do nothing other than confirm no set or stored codes, than start up and go!
Q: If you "ordered a programmed PCM",why would you want to know NOW about TM - either that was removed or was not by the "programmers"?? See other posts on TM, but unless you have modified tranny and rear, I'd leave TM in.
Do follow ALL the supplied instructions, follow all EMI/RFI/ESD and grounding precautions (if you don't know about these, please have a qualified service technician perform the PCM replacement!), and I would do nothing other than confirm no set or stored codes, than start up and go!
Last edited by emarkay; 12-21-2003 at 01:07 PM. Reason: spelling
12-21-2003, 01:08 PM
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The PCM also "learns" and stores the crank shaft variation.
The crank shaft variation "learn" can only be done using a scan tool with bi-directional capabilities. THe PCM will not learn this information by itself.
If you replace your PCM, you *must* perform a crank position sensor relearn.
See this page for more details:
http://www.seattleautomotive.com/ckpdoc.htm
Regards
Paul
The crank shaft variation "learn" can only be done using a scan tool with bi-directional capabilities. THe PCM will not learn this information by itself.
If you replace your PCM, you *must* perform a crank position sensor relearn.
See this page for more details:
http://www.seattleautomotive.com/ckpdoc.htm
Regards
Paul
12-21-2003, 01:49 PM
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"In theory" a VIN matched PCM shouldn't require this - see page 6-1747 of the 2000 manual.
"Reprogramming the PCM does not require running the CKP procedure unless the PCM is new or from another vehicle."
Of course it can't hurt to do the relearn...
"Reprogramming the PCM does not require running the CKP procedure unless the PCM is new or from another vehicle."
Of course it can't hurt to do the relearn...
12-21-2003, 05:24 PM
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Yeah new PCM........ 
I gave him my VIN number when I ordered the pcm. Where canI find the instructions for installing the pcm that you were talking about?
I gave him my VIN number when I ordered the pcm. Where canI find the instructions for installing the pcm that you were talking about? Trending Topics
12-21-2003, 07:12 PM
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Factory shop manual, or hopefully this programmer is keen on customer service and provides complete instructions... 
PCMs, like any computer are very succeptable to static, and other maladies when not connected, and even more so during the process of connecting.
EMI= voltage transients
RFI = radio/microwave transients
ESD= static sparks
I didn't mention EMP, because I don't think you are near a thunderstorm or a nuclear bomb explosion...
Good luck!
PCMs, like any computer are very succeptable to static, and other maladies when not connected, and even more so during the process of connecting.
EMI= voltage transients
RFI = radio/microwave transients
ESD= static sparks
I didn't mention EMP, because I don't think you are near a thunderstorm or a nuclear bomb explosion...
Good luck!