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Thread: E38 a/c disable/enable rpm

  1. #1
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    Default E38 a/c disable/enable rpm

    I have a 2010 camaro ss E38 ecm.
    Whats your take on disabling the compressor at higher engine RPM's?
    Does the tables in Systems/AC params G0103/G0104 work?
    If so, which pin on J1/J2 would connect to the compressor thru a relay?

    I am using a VA a/c system with a trinary switch to control the fans and would add another to control the compressor rpm on/off?
    If that works!

    Thanks, Chuck

  2. #2
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    is this on a custom swap?

  3. #3
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    Yes...It's in a 55 Chevy

  4. #4
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    Quote Originally Posted by 5557nut View Post
    Yes...It's in a 55 Chevy
    E38 will not be able to control AC compressor by itself, it needs can data message to activate it, you need BCM and AC controls, there is a company that sells a module to produce this signal.
    If you wire the AC pressure sensor, it may activate FANS when needed.
    why not use ECM to control Fans?

  5. #5
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    Yes I am using the ecm for fans. I miss-spoke. I meant using to trinary to control compressor.
    It appears the settings in the ecm for ac rpm is non-functional.
    I guess I'll have to remember to turn off the ac if I do burnouts.
    It may not be critical to be concerned about compressor rpm since my Sanden SD7B10 is 6500 constant and 9300 downshift.
    I guess GM quit using that control like the LS1 when they started using control modules to consolidate wiring.
    Thanks for helping out.

    2010 Camaro SS LS3 in a 55 Chevy
    Manual 6 spd
    Texas Speed 2" headers w/3" exhaust
    Texas Speed cam 229/236 .629/.615 112 LSA
    Hi-Ram intake stock injectors

  6. #6
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    not sure i understand. will a/c control (g0101-6) work on a 07 ls7 c6z06 or not?

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