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Computer is Out

Old Jul 17, 2011 | 09:42 AM
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Computer is Out

I swapped in a 350 carbed Vette motor in place of the 305 TPI and took out the cpu. What do I need to do to keep th A/C working? I believe the cpu controlled at least the high pressure cut off.
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Old Jul 17, 2011 | 01:57 PM
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Car: 91 Trans Am
Re: Computer is Out

No it didnt

The ECM controlled the relay ground leg and had a tee into the compressor control to bump up the idle when AC was engaged. The pressure switches were for the safety/function of the system. If the pressure was too high or too low they opened the compressor circuit disabling AC until pressure could be restored

Emulate an earlier carb setup
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