How does the Idle Control Valve system improve idle smoothness and How to test and replace the Idle Control Valve on 1998 Mazda Millenia?

The ISC system regulates bypass air through the throttle body to adjust idle. To test the ISC/IAC valve, disconnect its electrical connector, measure resistance, observe valve movement, and compare rpm with the connector detached cold and warm. If resistance or airflow is incorrect, replace the valve and reinstall in reverse.

Genuine 1998 Mazda Millenia Idle Control Valve

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2 Idle Control Valves found

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1998 Mazda Millenia Idle Speed Control Part Number: KL47-20-660
$133.88 MSRP: $175.74
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Product Specifications
- Other Name: Valve, Idle Air Control
- Item Weight: 1.10 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: KL47-20-660
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 1998 Mazda Millenia Submodels:
- Base
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1998 Mazda Millenia Air Control Valve Part Number: KJ01-20-660
Product Specifications
- Other Name: Valve, Idle Air Control
- Item Weight: 1.10 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: KJ01-20-660
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 1998 Mazda Millenia Submodels:
- Base, Millennium Edition, S | 6 Cyl 2.3 L GAS

1998 Mazda Millenia Idle Control Valve Parts and Q&A

Q: How does the Idle Control Valve system improve idle smoothness and How to test and replace the Idle Control Valve on 1998 Mazda Millenia?
A: The ISC system regulates bypass air through the throttle body to adjust idle. To test the ISC/IAC valve, disconnect its electrical connector, measure resistance, observe valve movement, and compare rpm with the connector detached cold and warm. If resistance or airflow is incorrect, replace the valve and reinstall in reverse.