Need to manually trick the IAC for higher load idle speed - how ?
08-13-2010, 03:27 PM
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Need to manually trick the IAC for higher load idle speed - how ?
2002 car
So my car has idle issues and I know this is a band-aid on amputated leg but for now it will help me DD it.
My car idle jumps then dies, still diagnosing but for now if I keep the A/C switch on it idles high enough where it wont stall. which is good for when my wife drives it.
How do I manually tell the IAC to act as if the A/C is on? Is the IAC what I need to jump? I don't want the A/C on all the time.
Until I fix it properly this is my chosen path.
So my car has idle issues and I know this is a band-aid on amputated leg but for now it will help me DD it.
My car idle jumps then dies, still diagnosing but for now if I keep the A/C switch on it idles high enough where it wont stall. which is good for when my wife drives it.
How do I manually tell the IAC to act as if the A/C is on? Is the IAC what I need to jump? I don't want the A/C on all the time.
Until I fix it properly this is my chosen path.
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08-13-2010, 03:34 PM
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The A/C button on the climate control panel goes to the ECU, then the ECU sends a signal to the A/C compressor clutch to engage. (This is highly simplified, but fundamentally accurate.)
Thus, the only way to make the ECU think that the A/C is on without the A/C actually being on involves disconnecting either the A/C clutch relay or the wire that goes to the compressor itself.
Thus, the only way to make the ECU think that the A/C is on without the A/C actually being on involves disconnecting either the A/C clutch relay or the wire that goes to the compressor itself.
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