03-09-2018, 03:31 PM
I am at a loss to attempt to explain any electrical correlation with releasing the clutch and increased idle speed; other than perhaps the IACV is reacting/over-reacting to increased load?
Before pursuing this, Is it possible that there is zero slack in the throttle cable and your right hand moves slightly as left releases? Have you tried this with hand off throttle? (could not see with vertical video format)
Ambient temperature might possibly affect electrical connections or a vacuum loss.
The EOT (engine oil temperature) sensor is a thermistor. It is very high resistance when coldest, then loses resistance as the temperature increases.
Therefore, if there is a poor/high resistance connection relating to the EOT, the higher resistance could indicate to the ECM a colder operating temperature than actual. If so, the IACV would maintain higher RPMs, as during warm-up.
Even though the IACV operation is a prime suspect in most of the reported idle issues, there may be (instead of or in addition to) poor electrical connection(s).
Before pursuing this, Is it possible that there is zero slack in the throttle cable and your right hand moves slightly as left releases? Have you tried this with hand off throttle? (could not see with vertical video format)
Ambient temperature might possibly affect electrical connections or a vacuum loss.
The EOT (engine oil temperature) sensor is a thermistor. It is very high resistance when coldest, then loses resistance as the temperature increases.
Therefore, if there is a poor/high resistance connection relating to the EOT, the higher resistance could indicate to the ECM a colder operating temperature than actual. If so, the IACV would maintain higher RPMs, as during warm-up.
Even though the IACV operation is a prime suspect in most of the reported idle issues, there may be (instead of or in addition to) poor electrical connection(s).