DENSO 136800-1N43 Honda Accord Manual Transmission Idle Control Valve

( Brand: Denso ), ( Manufacturer Part Number: 136800-1N43 ), ( Part Type: Control Valve Manual Transmission ), ( Country/region Of Manufacture: Japan ), ( Voltage: 12v ), ( Material: Aluminum Plastic ), ( Placement On Vehicle: Engine Bay ), ( Features: Vacuum Switching Valve ), ( Oe/oem: Oem ), ( Vintage: No ), ( Valve Operation: Solenoid )

Review DENSO Honda Accord Manual Transmission Idle Control Valve Original Is

The **Denso 136800-1N43 (98-02 Honda Accord Manual Transmission Idle Control Valve)** is a precision-engineered component designed to regulate the airflow and fuel mixture during idle conditions in Honda s 1998 through 2002 model-year Accord vehicles equipped with manual transmissions. This critical part belongs to the engine s idle control system, which ensures smooth and stable engine operation when the throttle is closed, particularly during low-speed driving, coasting, or when the vehicle is stationary. Crafted by Denso, a globally renowned manufacturer of automotive components, this idle control valve is built to exacting standards, featuring a durable stainless steel or high-grade metal housing and a finely calibrated internal mechanism that adjusts the idle speed by controlling the amount of air bypassing the throttle body. The valve operates in tandem with the engine s Electronic Control Unit (ECU), receiving signals to modulate airflow dynamically, compensating for variations in load, temperature, and engine wear to maintain optimal idle performance. Whether installed in a classic Honda Accord used for daily commuting, track days, or restoration projects, this valve is essential for preventing rough idling, stalling, or excessive fuel consumption common issues that arise when the idle control system malfunctions. Its compatibility with the 1998 to 2002 manual transmission models ensures a seamless fit with the vehicle s throttle body and wiring harness, making it a straightforward yet vital upgrade or replacement for mechanics and enthusiasts seeking to restore or enhance their Accord s drivability. Built to withstand the demands of high-performance applications or prolonged use in varying environmental conditions, this Denso idle control valve exemplifies reliability, precision, and engineering excellence, offering a long-lasting solution for maintaining a smooth and responsive idle.

### **Pros and Cons of buying a Denso 136800-1N43 (98-02 Honda Accord Manual Transmission Idle Control Valve)**

1. **OEM Quality** Denso is a reputable manufacturer known for producing high-quality automotive parts that meet or exceed original equipment standards. This valve is designed to function similarly to the factory component, ensuring proper idle stability and smooth operation.

2. **Direct Fitment** The part is specifically engineered for the **1998 2002 Honda Accord with manual transmission**, reducing the risk of compatibility issues. It should install without modification, provided the vehicle s engine and transmission match the listed specifications.

3. **Reliability** Denso components are built to last, often outperforming aftermarket alternatives in durability. A well-functioning idle control valve prevents rough idling, stalling, and potential long-term engine damage caused by improper air-fuel mixture regulation.

4. **Ease of Installation** Replacing the idle control valve is a relatively straightforward DIY job for those with basic mechanical skills. It typically requires removing the throttle body, disconnecting wiring, and replacing the old valve with the new one. No major disassembly is usually needed.

5. **Warranty Coverage** Many Denso parts come with a manufacturer s warranty (typically 1 2 years), providing peace of mind against defects. Some retailers may also offer additional return or replacement policies.

6. **Prevents Engine Issues** A failing idle control valve can cause erratic idling, poor fuel economy, or even engine misfires. Replacing it proactively can prevent more costly repairs down the line.

7. **Aftermarket Availability** While Denso is an OEM brand, it is also widely available through auto parts stores (O Reilly, AutoZone, RockAuto), online retailers (Amazon, eBay, RockAuto), and Honda dealerships. This ensures easy access to the part.

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1. **Cost** Denso parts are generally more expensive than generic aftermarket alternatives. The price for this idle control valve typically ranges between **$30 $60**, depending on the retailer. While this is reasonable for an OEM-quality part, budget-conscious buyers may opt for cheaper options (though with potential trade-offs in reliability).

2. **Potential Counterfeit Risks** Purchasing from untrusted sellers (especially on eBay or Amazon third-party listings) increases the risk of receiving a **counterfeit or low-quality replica**. Always verify the seller s reputation and check for authenticity seals or packaging.

3. **Mixed Reviews on Aftermarket Alternatives** While Denso is reliable, some buyers report that **cheaper aftermarket valves** (e.g., from brands like **Mopar, ACDelco, or generic "OEM" parts**) may work just as well for basic function. However, these may lack the same longevity or precision calibration.

4. **DIY Difficulty for Novices** Although the replacement is manageable for most DIYers, those without experience working on throttle bodies or engine electrical components may struggle. Improper handling could lead to damage (e.g., cracking the throttle body or misrouting wiring).

5. **Possible Additional Repairs Needed** If the idle control valve fails due to **carbon buildup, wiring issues, or a failing throttle position sensor (TPS)**, simply replacing the valve may not fully resolve idling problems. A **throttle body cleaning** or **TPS replacement** might also be required.

6. **Limited Long-Term Savings** While Denso is durable, it is not indestructible. In high-mileage vehicles or those with poor maintenance histories, the valve may still fail prematurely, necessitating another replacement sooner than expected.

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### **Conclusion**

The **Denso 136800-1N43 idle control valve** is a **strong, reliable choice** for restoring proper idle performance in a **1998 2002 Honda Accord with a manual transmission**. Its **OEM quality, direct fitment, and durability** make it a preferred option for those prioritizing long-term reliability and ease of installation. However, the **higher cost** and **risk of counterfeit parts** (if purchased from untrusted sources) are valid considerations.

For **budget-conscious buyers**, a **high-quality aftermarket alternative** (e.g., **Mopar, ACDelco, or a reputable brand like **Bosch or Delphi**) may offer comparable performance at a lower price, though with slightly reduced warranty coverage. That said, these alternatives should still meet or exceed basic functionality.

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### **Recommendation**

- **If budget is not a concern and reliability is the priority**, **purchase the Denso part from a trusted retailer** (e.g., **RockAuto, O Reilly Auto Parts, or a Honda dealership**). Verify the seller s authenticity to avoid counterfeits.

- **If cost is a factor**, consider a **reputable aftermarket brand** (e.g., **Mopar, ACDelco, or Bosch**) from a well-reviewed online store. Ensure the part is **direct-fit** and has positive user feedback.

- **Before purchasing**, confirm that the **throttle body and wiring** are in good condition. If the idle issue persists after replacement, inspect the **throttle position sensor (TPS)** and **throttle body for carbon buildup**.

- **For first-time DIYers**, watch a **step-by-step replacement video** (e.g., from **ChrisFix or Haynes Manual**) to avoid mistakes during installation.

**Final Verdict:** The Denso valve is the **best all-around choice** for most buyers due to its **proven performance and longevity**, but careful sourcing and preparation are essential for the best results.

Details:

Still worked when I pulled it off. Very hard to find. Used 98-02 Honda Accord manual transmission idle control valve original. Came off original Honda Accord 2.3l manual transmission.

Please look at all pictures.

part #: 1368001n43 prices

• $42.00-$89.00

specifications valvesplumbing:

• brand: Denso
• mpn: 136800-1n43
• part type: Control Valve Manual Transmission
• country/region of manufacture: Japan
• voltage: 12v
• material: Aluminum Plastic
• placement on vehicle: Engine Bay
• features: Vacuum Switching Valve
• oe/oem: Oem
• vintage: No
• valve operation: Solenoid

seller valvesplumbing:

• rating: 99.8%
• city: Lafayette, Indiana
• # reviews: 986

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general valvesplumbing:

• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds
• condition: Used

offer valvesplumbing:

• availability: In Stock
• quantity: 1
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• started: June 3, 2026

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• type: Calculated
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