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12-25-2021, 07:18 PM | #1 | |
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2008 LT 3.9l Active Fuel Management
2008 3.9L 175k miles I’m trying to find information on what conditions are required for the ECM to command the AFM to drop from 6 cylinder operation to 3 cylinder operation. I’ve found a lot of info on the solenoids and valve lifters that are used but nothing on the specific conditions required to active it.
Recently mine quit switching to 3 cylinder mode. |
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12-26-2021, 04:26 PM | #2 | |
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Re: 2008 LT 3.9l Active Fuel Management
Generally engine temperature, % of engine load, certain sensor inputs within operating range. If you google this you will find what the pcm needs to see before it engages this function.
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12-27-2021, 12:48 PM | #3 | ||
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Re: 2008 LT 3.9l Active Fuel Management
Quote:
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01-14-2022, 12:01 PM | #4 | |
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Re: 2008 LT 3.9l Active Fuel Management
afm does create engine issues wear internal ..https://www.rangetechnology.com/prod...r/parts/RA003B
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