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Old 08-09-2015, 10:47 AM   #1
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Default need help setting idle for running A/C Megasquirt First Gen(white)

I got my base map loaded on, the car drives fine but when i turn the a/c on at idle it wants to stall, i hear about a drop down menu for a/c but i cannot find it.. if anyone can help with this issue thanks for now I'm going to continue to do my research.
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Old 08-09-2015, 12:51 PM   #2
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There is no A/C menu for it on the first gen. On mine I had to set the idle for about 1100 RPM and tune closed loop once I got it stable there. Even then it wasnt perfect. It will help if you look at your RPM/KPA with A/C on, add a row for that in your ignition table and give it lots of timing. The problem is the A/C sucks a ton of torque, and at idle were not making very much. This makes it difficult to tune.

Good luck
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Old 08-09-2015, 02:39 PM   #3
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For me, the only true solution was writing my own software to handle the torque.

MS1 AC Idle-Up Code Hack
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Old 08-10-2015, 10:43 AM   #4
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Exactly what MSPNP revision is this? The final revision of the '94-'95 MSPNP incorporated an analog idle-up circuit similar to the one in the Gen 2 V1.2s.
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