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Engine Idle up issue when A/C turns on

Tharindu Senadeera

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Hi Folks,
My car is Toyota Corolla AE100. When A / C turns on engine is idling up normally but it cannot hold the RPM, just after idle up RPM again drops.

When in traffic it is a big issue because RPM getting low and low. I have changed an ECU but it shows the same issue.

Checked all the sensors related to throttle body area. Checked the A/C compressor also. Then mechanic said that the last thing that can be done is ECU remapping. Are there any other thing to check?

Need your idea


Edited by Tharindu Senadeera
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