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Thread: 6.0 LS2 / T42 GTO - make trans line pressure TPS dependant?

  1. #1
    Junior Member
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    Default 6.0 LS2 / T42 GTO - make trans line pressure TPS dependant?

    Anyone know how this is done? ie - make the EPC solenoid react to TPS/APPS position rather than MAF/VE?

  2. #2
    Joe (Moderator) joecar's Avatar
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    Can't be done directly in the tune...

    and I'm not sure how it would be done outside the tune...

    ( the PCS solenoid sinks current, this current would have to be inversely proportional to TPS voltage, you would need a voltage-to-current amplifier/op-amp circuit that maps 0.0V-5.0V TPS voltage to 1.1A-0.0A PCS current (inverse relationship) with the ability to supply upto 1.1A...

    I don't know of anyone doing this for the TPS->PCS control ).

  3. #3
    Junior Member
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    OK, so basically, my options are either dial in that MAF properly (if it is found to not be defective) and/or install a mechanical vacuum modulator in the trans and disable the PCS codes... both are do-able...

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