PCM Relearn after intake change?
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Joined: Sep 2002
Posts: 61
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From: San Diego CA
PCM Relearn after intake change?
Have heard rumors that you need to do a relearn on your PCM after changing the intake and/or battery disconnect. Is this true or just a rumor? :confused: :confused:
Melting Slicks
Joined: Feb 2002
Posts: 2,613
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From: Winston Salem NC
Re: PCM Relearn after intake change? (jefe)
I believe most intake instructions advise disconnecting the battery during install. It becomes moot. But, disconnect and 100 miles should do it.
Tech Contributor
Joined: Oct 1999
Posts: 41,043
Likes: 9,807
From: Charlotte, NC (formerly Endicott, NY)
Re: PCM Relearn after intake change? (davidfarmer)
I agree with Dave. The PCM relearns its new operating parameters very quickly. This is how it keeps the cars emissions in check during normal operation.
Bill
Bill
Burning Brakes
Joined: May 1999
Posts: 1,084
Likes: 158
From: New Bedford MA
Re: PCM Relearn after intake change? (jefe)
:iagree:
My 98 took only a short time to learn that it was breathing better. However, when I took it out to move it over to my new AE it took a few WOT runs with the old stock unit back in place for it to re-learn the stock gasping for air.
My 98 took only a short time to learn that it was breathing better. However, when I took it out to move it over to my new AE it took a few WOT runs with the old stock unit back in place for it to re-learn the stock gasping for air.
