When starting my engine in the morning the RPM's drops and car is running like it's been warmed up already for a long time.
P0505 code set Description the PCM attempts to control engine speed during KOER self-test The test fails when the desired rpm could not be reached or controlled during the self-test Possible causes IAC circuit open VPWR to IAC solenoid open IAC circuit shorted to PWR damaged IAC valve damage PCM Diagnostic Aides
The IAC solenoid resistance from 6 to 13 ohms
and some modle resistance from 17 to 25 ohms at room temperature about 60 F
36.2k questions
32.2k answers
1.3k comments
22.8k users