pcm memory loss
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TECH Enthusiast
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Joined: Dec 2005
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From: Farmington NH
pcm memory loss Hey guys,
When i pulled my car out of storrage this year (it had no battery in it for about 5 months) when i started it up it was like it forgot its idle and had to relearn it
my question is this, seeing as how i dont know how the pcm functions
If i get a tune this spring with my new cam when i pull the battery in the fall do i need to worry about loosing my tune like i did my idle this year?
is it the same thing?
hope i explained this well enough
When i pulled my car out of storrage this year (it had no battery in it for about 5 months) when i started it up it was like it forgot its idle and had to relearn it
my question is this, seeing as how i dont know how the pcm functions
If i get a tune this spring with my new cam when i pull the battery in the fall do i need to worry about loosing my tune like i did my idle this year?
is it the same thing?
hope i explained this well enough
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Idle was grumpy because of the disconnected battery, essentially it reset the PCM and had to learn idle again. Disconnecting the battery won't lose a tune, but idle will react the same way after you take it out of storage again.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
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From: Lake Zurich, IL
