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The 8th generation (E110) of Toyota's best-selling compact car.

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Toyota RPM idle low

2000 Toyota corolla 5a engine rpm lowers when aircon is turned on.

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Shawn, probably a stuck A/C Vacuum Switching Valve. VSV increases idle when the A/C compressor starts. If it fails very low RPM idle when running the A/C.

You can find a good tech to diagnose and estimate repair or google search your make and model# VSV replacement.

I hope this helped you out, if so let me know by pressing the helpful button.

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Shawn crwdns2934231:0crwdne2934231:0
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