1. Engine Cooling Components Deals
  2. sku: 21631028524418632
  3. TOYOTA 89428-24010

TOYOTA 89428-24010 Temperature Detect Switch JZA80 JZS147

fits model: Gs300, Supra. make: Lexus, Toyota.

89428-24010 Toyota Supra Lexus Gs300 Jza80 Jzs147 Temperature Detect Switch Oem

( Brand: Toyota ), ( Manufacturer Part Number: 89428-24010 ), ( Part Type: Switch ), ( Description: Sensor, Water Temperature ), ( Manufacturer Warranty: 1 Month ), ( Universal Fitment: No ), ( Country Of Origin: Japan )

Review TOYOTA Lexus Temperature Detect Switch Oem fits SUPRA GS300

The **Toyota 89428-24010 (Lexus GS300, JZA80, JZS147) Temperature Detect Switch** is a precision-engineered component designed to ensure optimal performance and safety in the cooling system of select Toyota and Lexus vehicles, including the iconic JZA80 Supra and the refined JZS147-based Lexus GS300. This high-quality switch plays a critical role in monitoring the engine coolant temperature, providing real-time feedback to the vehicle s electronic control unit (ECU) to regulate the operation of the cooling fan, thermostat, and other temperature-sensitive systems. Crafted from durable materials, including robust metal contacts and a sealed, corrosion-resistant housing, this switch is built to withstand the demanding conditions of high-performance driving while maintaining reliability over an extended service life.

The **89428-24010** is specifically engineered to interface seamlessly with the cooling system architecture of the JZA80 (1993 2002) and JZS147 (1994 2006) platforms, ensuring compatibility with both the Toyota Supra and Lexus GS300. Its design incorporates a temperature-sensitive bimetallic strip or thermistor element, which responds to fluctuations in coolant temperature by either closing or opening the electrical circuit, depending on the vehicle s cooling needs. When the engine is cold, the switch remains open, allowing the cooling fan to operate intermittently to prevent overheating, while in warmer conditions, it closes the circuit to maintain consistent airflow and thermostat function. This precise temperature detection mechanism helps prevent engine strain, extends the lifespan of cooling components, and enhances overall drivability by ensuring the engine operates within its optimal temperature range.

Beyond its functional excellence, this switch is also a testament to Toyota s commitment to engineering precision and longevity. The **89428-24010** is designed to meet or exceed OEM specifications, ensuring a perfect fit and seamless integration with the vehicle s existing wiring harness and cooling system. Its compact yet sturdy construction allows for easy installation, whether during routine maintenance or as part of a more extensive cooling system upgrade. For enthusiasts and mechanics working on classic or high-performance JZ engines, this switch is an essential component for maintaining peak performance, especially in applications where the cooling system may be subjected to increased thermal stress such as in modified or heavily driven vehicles. Whether used in a stock configuration or as part of a custom cooling package, the **89428-24010** provides the reliability and accuracy needed to keep the engine running cool, efficient, and protected against the risks of overheating.

### **Analysis of Buying a Used Toyota 89428-24010 (Supra, Lexus GS300, JZA80, JZS147) Temperature Detect Switch**

#### **Overview**

The **Toyota 89428-24010** is a **temperature detect switch** (also known as a **coolant temperature sensor** or **ECT sensor**) used in **A80-based engines** (JZA80 in Supra, JZS147 in Lexus GS300). This part is critical for engine management, as it monitors coolant temperature to adjust fuel delivery, ignition timing, and other parameters. A faulty sensor can lead to **poor performance, rough idling, overheating, or check engine lights (CEL)**.

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### **Pros of Buying a Used/Aftermarket 89428-24010 Switch**

1. **Cost Savings**

- New OEM sensors typically range from **$50 $100**, while aftermarket or used units can be found for **$20 $50** (depending on condition and source).

- Avoids dealer markup on replacement parts.

2. **Availability of Aftermarket Options**

- Brands like **AEM, NGK, or Bosch** offer high-quality alternatives that may be **more durable or compatible** with modified engines.

- Some aftermarket sensors include **better resistance to corrosion** or **improved accuracy** for tuning.

3. **Potential for Customization**

- Some aftermarket sensors are designed for **high-performance tuning**, allowing for **better throttle response** or **fuel efficiency adjustments**.

- Useful for **JDM tuners** or those modifying their engine.

4. **Easier to Source from Online Marketplaces**

- Platforms like **eBay, Facebook Marketplace, or specialty forums** (e.g., **JDMForums, SupraForums**) often have used sensors at lower prices.

- Can be shipped quickly if buying from a reputable seller.

5. **No Warranty Concerns (If Buying Used)**

- If purchasing from a trusted source (e.g., a mechanic with a good reputation), you may not need a warranty, saving on long-term costs.

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### **Cons of Buying a Used/Aftermarket 89428-24010 Switch**

1. **Reliability Risks**

- Used sensors may have **internal corrosion, damaged wiring, or pre-existing faults**, leading to **frequent failures** or **inaccurate readings**.

- No way to verify **original condition** unless inspected by a professional.

2. **Compatibility Issues**

- Some aftermarket sensors may **not fit perfectly** or may require **modifications** (e.g., wiring harness adjustments).

- **Lexus GS300 (JZS147) and Supra (JZA80) wiring harnesses are similar but not identical** incorrect installation can cause **malfunctions or CEL codes**.

3. **Potential for Counterfeit Parts**

- Cheap aftermarket sensors may be **low-quality knockoffs** that fail quickly or **do not meet OEM specifications**.

- Risk of **false readings**, leading to **engine misfires, poor fuel economy, or overheating**.

4. **No Return Policy or Guarantee**

- Buying used means **no warranty or return options** if the sensor fails immediately, you re stuck with replacement costs.

- Aftermarket parts may have **limited warranties (e.g., 30 90 days)**, which can be risky for long-term use.

5. **Risk of Contamination or Damage**

- Used sensors may have been **exposed to coolant leaks, oil, or debris**, leading to **internal fouling** and premature failure.

- **Thermistors (temperature-sensitive resistors) can degrade** over time, even if the sensor looks intact.

6. **Potential for Incorrect Calibration**

- Some aftermarket sensors may **not match the stock calibration** of your engine, leading to **poor performance or drivability issues**.

- Requires **ECU tuning adjustments**, which may not be straightforward.

7. **Lack of OEM Support**

- If issues arise, **Toyota/Lexus dealerships may refuse to honor warranty claims** if a non-OEM part was installed.

- **No official diagnostics or replacements** from the manufacturer.

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### **Key Considerations Before Purchase**

1. **Symptoms of a Failing Sensor**

- **Check Engine Light (P0115, P0116, P0117, P0118 codes)**

- **Rough idle or stalling**

- **Overheating (if sensor fails "hot")**

- **Cold starts are difficult or take longer**

- **Poor fuel economy or hesitation under load**

2. **Where to Buy Safely**

- **eBay (with seller ratings >4.5 stars, sold by verified mechanics)**

- **Facebook Marketplace (local, inspected by a trusted friend/mechanic)**

- **Specialty forums (JDMForums, SupraForums, LexusForums) with seller reviews**

- **Reputable aftermarket brands (AEM, NGK, Bosch, Denso)**

3. **Inspection Before Purchase**

- **Check for physical damage** (cracks, corrosion, bent pins).

- **Test resistance with a multimeter** (should change significantly with temperature).

- **Verify wiring harness compatibility** (Lexus GS300 may need slight modifications).

- **Ask for proof of working condition** (video of it being tested).

4. **Installation Difficulty**

- **JZA80 (Supra) and JZS147 (GS300) sensors are similar but not identical** **double-check wiring connections**.

- **Some sensors require torque specs** (e.g., **15 20 Nm** for the housing bolt).

- **Clear old coolant** if the sensor was previously faulty to avoid **air bubbles or debris**.

5. **Alternatives to Buying Used**

- **Buy new from a trusted supplier** (Amazon, RockAuto, local auto parts stores).

- **Check for OEM remanufactured parts** (often cheaper than new but reliable).

- **Consider a full engine management system upgrade** if the sensor is part of a larger issue.

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### **Conclusion & Recommendation**

#### **Best Choice: Buy New (OEM or High-Quality Aftermarket)**

- **Pros:** Guaranteed reliability, warranty, proper calibration, no risk of hidden damage.

- **Cons:** Slightly higher upfront cost ( $50 $100).

#### **Second Best: Buy Used from a Trusted Source (With Inspection)**

- **Pros:** Significant cost savings, good for budget-conscious buyers.

- **Cons:** Risk of failure, no warranty, potential compatibility issues.

- **Best for:** Experienced DIYers who can **inspect and test the sensor** before purchase.

#### **Avoid: Cheap Unknown Aftermarket or Uninspected Used Sensors**

- **High risk of failure, incorrect readings, or installation problems.**

- **Not worth the potential headaches** unless you re certain of the source.

---

### **Final Recommendation**

**If possible, purchase a new OEM or reputable aftermarket sensor (AEM, NGK, Bosch).**

- **Why?** The **reliability and warranty** outweigh the minor cost difference.

- **If buying used is the only option:**

- **Inspect thoroughly** (multimeter test, visual inspection).

- **Buy from a seller with high ratings and return policies.**

- **Consider testing it in a known-good engine first** (if possible).

**For most Supra (JZA80) and GS300 (JZS147) owners, the peace of mind from a new sensor justifies the extra cost.** Used sensors can work, but the risks of failure or poor performance often **don t justify the savings** unless you re certain of the part s condition.

Details:

You pay only item cost shipping. Quality, Speed, and Service. The part must be installed properly and not disassembled to qualify. Warranty: 30-day limited warranty included.

Fast and free shipping.

part #: 8942824010 prices

  • $56.55-$125.00

specifications ocoosys:

  • for models: Gs300, Supra
  • for makes: Lexus, Toyota
  • brand: Toyota
  • mpn: 89428-24010
  • part type: Switch
  • description: Sensor, Water Temperature
  • manufacturer warranty: 1 Month
  • universal fitment: No
  • country of origin: Japan

payments ocoosys:

  • other
  • wallet: Apple-pay
  • credit card: Mastercard

returns ocoosys:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

seller ocoosys:

  • rating: 100.0%
  • city: Shirley, New York
  • # reviews: 5111

general ocoosys:

  • Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
  • condition: New

shipping ocoosys:

  • cost: $0.00
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • transit: 5-10 Days
  • type: Fixed
  • class: Standard

offer ocoosys:

  • options: Ship-to-home
  • started: May 13, 2026
  • availability: In Stock
  • sold: 0
  • quantity: 1
for models: gs300, supra, for makes: lexus, toyota, part type: switch, description: sensor, water temperature, manufacturer warranty: 1 month, universal fitment: no, country of origin: japan,
category: auto parts > car truck parts accessories > engine cooling components, sku: 21631028524418632,
Toyota 89428-24010 Is Similar To:
ocoosys logo
5 offers $56.55–$125.00 USD
  • New. Offer #1 priced at $92.00 + $0.00 shipping estimate = $92.00* total. The part must be installed properly and not disassembled to qualify. Quality, Speed, and Service.FREE SHIPPING
  • Used. Offer #2 priced at $125.00 + $9.80 shipping estimate = $134.80* total. Price reflects this One of the buttons has some plastic damage but the unit works as it should .+$9.80 shipping
  • New. Offer #3 priced at $56.55 + $19.99 shipping estimate = $76.54* total. TOYOTA GENUINE. LEXUS GENUINE.+$19.99 shipping
  • New. Offer #4 priced at $97.19 + $34.99 shipping estimate = $132.18* total. SWITCH ASSY, THROTTLE POSITION TOYOTA SUPRA 05/1993-08/2002.+$34.99 shipping
  • New. Offer #5 priced at $94.00 + $0.00 shipping estimate = $94.00* total. FREE SHIPPING

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