What is the function of the Idle Air Control (IAC) valve and how can it be checked and replaced on Toyota Solara?

First of all, the engine idle speed is controlled by the Idle Control Valve, which regulates the airflow bypassing the throttle plate into the intake manifold. The IAC valve is controlled by the PCM and adjusts the air intake based on engine demands and operating conditions. To check the IAC valve, apply the parking brake, shift the transaxle to Neutral or Park (automatic), and block the drive wheels. Install a tachometer and start the engine, comparing the idle speed to specifications. If the engine speed changes, the IAC valve is functioning properly; then, measure the IAC valve resistance and if the resistance does not meet specifications, replace the IAC valve. If it does, further investigate the wiring or PCM. If the IAC operates correctly, inspect the wiring harness since the PCM may be defective and should be checked. For replacement, remove the throttle body, detach the IAC valve and gasket, and reinstall using a new gasket.

Genuine Toyota Solara Idle Control Valve

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8 Idle Control Valves found

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Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-03030
$264.19 MSRP: $378.84
You Save: $114.65 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Manufacturer Note: (L)
- Comment: (FOR THLOTTLE BODY)
- Replaces: 22270-74340
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2001 Toyota Solara | 4 Cyl 2.2L | 5SFE; 5SFE; SXV20L-GCMNKA, SXV20L-GCPNKA, SXV20L-GCPNKK
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Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-74290
$266.38 MSRP: $381.97
You Save: $115.59 (31%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body)
- Manufacturer Note: CALIFORNIA SPEC
- Comment: (FOR THLOTTLE BODY)
- Replaced by: 22270-74291
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2000 Toyota Solara | 4 Cyl 2.2L | 5SFE; 5SFE; SXV20L-GCMNKA, SXV20L-GCPNKA
View related parts
Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-74340
$264.19 MSRP: $378.84
You Save: $114.65 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body)
- Manufacturer Note: (J)
- Comment: (FOR THLOTTLE BODY)
- Replaced by: 22270-03030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2001 Toyota Solara | 4 Cyl 2.2L | 5SFE; 5SFE; SXV20L-GCMNKA, SXV20L-GCPNKA, SXV20L-GCPNKK
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Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-03050
$265.72 MSRP: $381.02
You Save: $115.30 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Comment: (FOR THLOTTLE BODY)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2002 Toyota Solara | 4 Cyl 2.2L | 5SFE; 5SFE; SXV20L-GCMNKA, SXV20L-GCPNKA, SXV20L-GCPNKK, SXV20L-GKPNKA
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Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-0A040
$261.10 MSRP: $374.41
You Save: $113.31 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Manufacturer Note: (L)
- Comment: (FOR THLOTTLE BODY)
- Replaces: 22270-0A020, 22270-20040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2003 Toyota Solara | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-GCPNKA, MCV20L-GCPNKK, MCV20L-GKPNKA, MCV20L-GKPNKK
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Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-20020
$261.10 MSRP: $374.41
You Save: $113.31 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Manufacturer Note: (J)
- Comment: (FOR THLOTTLE BODY)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2003 Toyota Solara | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-GCMNKA, MCV20L-GCMNKK
View related parts
Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-20040
$261.10 MSRP: $374.41
You Save: $113.31 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body)
- Manufacturer Note: (J)
- Comment: (FOR THLOTTLE BODY)
- Replaced by: 22270-0A040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Solara | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-GCPNKA, MCV20L-GCPNKK, MCV20L-GKPNKA, MCV20L-GKPNKK
View related parts
Toyota Solara Valve Assembly, Idle Speed Control
Part Number: 22270-74400
Product Specifications
- Other Name: Valve Assy, Idle Speed Control(For Throttle Body); Idler Speed Control
- Manufacturer Note: CALIFORNIA SPEC
- Comment: (FOR THLOTTLE BODY)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2001 Toyota Solara | 4 Cyl 2.2L | 5SFE; 5SFE; SXV20L-GCMNKA, SXV20L-GCPNKA, SXV20L-GKPNKA

Toyota Solara Idle Control Valve

The Idle Control Valve in Toyota Solara vehicles works to control the engine speed while idling and it does this by controlling the amount of air that is going around the throttle plate. This is an electrically operated gadget that operates in harmony with the engine control unit to allow a smooth idle period to avoid stall during variation in load. A linear servo motor is often used and a valve changes the position of a plunger to regulate the flow of air while it continually idles. Different designs of Idle Control Valves has been used in Toyota Solara models of the past with significant emphasis put on strength and speed. These valves as rightly intended to have long durability and are prone to problems like jamming due to dirt or dust hence they cause the idling to be erratic. Therefore, in order to maintain the Idle Control Valve without needing replacement based on faulty constituents it is advisable to regularly clean the Idle Control Valve.

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Toyota Solara Idle Control Valve Parts Questions & Experts Answers

Valve Assembly, Idle Speed Control
22270-03050
Q: What is the function of the Idle Air Control (IAC) valve and how can it be checked and replaced on Toyota Solara?
A: First of all, the engine idle speed is controlled by the Idle Control Valve, which regulates the airflow bypassing the throttle plate into the intake manifold. The IAC valve is controlled by the PCM and adjusts the air intake based on engine demands and operating conditions. To check the IAC valve, apply the parking brake, shift the transaxle to Neutral or Park (automatic), and block the drive wheels. Install a tachometer and start the engine, comparing the idle speed to specifications. If the engine speed changes, the IAC valve is functioning properly; then, measure the IAC valve resistance and if the resistance does not meet specifications, replace the IAC valve. If it does, further investigate the wiring or PCM. If the IAC operates correctly, inspect the wiring harness since the PCM may be defective and should be checked. For replacement, remove the throttle body, detach the IAC valve and gasket, and reinstall using a new gasket.

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