1. Engine Cooling Components Deals
  2. sku: 20706018660181731
  3. BUICK 87GGJQ

BUICK 87GGJQ Water Temperature Sensor

fits model: Lesabre. make: Buick. year: 1985–1991.

87ggjq Replacement Water Temperature Sensor Fits Buick Lesabre 1985-1991

( Manufacturer Part Number: 87GGJQ ), ( Part Type: Sensor ), ( Compatible Make/model: Buick Lesabre ), ( Compatible Years: 1985 1986 1987 1988 1989 1990 1991 85 86 87 88 89 90 91 ), ( Fitment Info: Engine Coolant Temperature Sensor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review BUICK Replacement Water Temperature Sensor fits LESABRE 1985–1991

The **87GGJQ Water Temperature Sensor** is a precision-engineered automotive component designed specifically for **Buick LeSabres manufactured between 1985 and 1991**, ensuring optimal performance and reliability in your vehicle s cooling system. This high-quality sensor is meticulously crafted to monitor the engine s coolant temperature with exceptional accuracy, providing real-time data to the engine control unit (ECU) to regulate fuel mixture, ignition timing, and overall engine efficiency. Made from durable materials, including a robust thermistor element encased in a corrosion-resistant housing, this sensor is built to withstand the demanding conditions of high-temperature environments while maintaining long-term durability. Its seamless integration into the engine bay ensures a secure and leak-proof fit, preventing coolant leaks and maintaining system integrity. Whether you re restoring a classic LeSabre or maintaining a well-loved vintage vehicle, this sensor guarantees consistent performance, helping to prevent overheating, fuel inefficiency, and potential engine damage. Ideal for both DIY enthusiasts and professional mechanics, the **87GGJQ Water Temperature Sensor** is a straightforward yet critical upgrade that enhances the reliability and longevity of your Buick LeSabre s cooling system.

The **87GGJQ water temperature sensor** is a common replacement part for the **1985 1991 Buick LeSabre**, particularly for the **3.8L V6 engine** (L36/L67). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of buying a 87GGJQ Water Temperature Sensor**

1. **Direct OEM Replacement** This sensor is an exact match for the original equipment manufacturer (OEM) part, ensuring proper fitment and functionality without modifications. It uses the same connector, mounting, and electrical specifications as the factory sensor.

2. **Reliability and Durability** High-quality aftermarket sensors (especially those from reputable brands like **ACDelco, Bosch, or Delphi**) are designed to last as long as the original, often with improved corrosion resistance. Many users report long-term reliability with minimal failure.

3. **Compatibility with Modern Diagnostics** The sensor s output (typically a variable resistance thermistor) is compatible with modern scan tools and OBD-I systems, allowing for accurate temperature readings and trouble code detection (e.g., P0115, P0116, P0117).

4. **Cost-Effective Fix** Replacing a faulty sensor is a relatively inexpensive repair (typically **$20 $50** for the part alone), compared to other engine issues that may arise from prolonged sensor failure (e.g., overheating, coolant leaks, or ECM misfires).

5. **Easy Installation** The sensor is straightforward to replace, requiring only basic tools (socket wrench, drain pan, and possibly a coolant flush if the system is contaminated). Most DIYers can complete the job in **30 60 minutes** with minimal experience.

6. **Prevents Secondary Damage** A failing temperature sensor can lead to incorrect fuel mixture, poor engine performance, or even catastrophic failure (e.g., seized engine from overheating). Replacing it early avoids these risks.

7. **Widely Available** This sensor is stocked by most auto parts retailers (AutoZone, O Reilly, RockAuto, Amazon) and is often available for **same-day pickup**, reducing downtime.

8. **Potential for Upgraded Performance** Some aftermarket sensors (e.g., **NGK or Motec**) offer improved accuracy or faster response times, which can enhance engine tuning and fuel efficiency in modified vehicles.

---

### **Cons of buying a 87GGJQ Water Temperature Sensor**

1. **Potential Counterfeit or Low-Quality Parts** The aftermarket for this sensor is saturated with **counterfeit or knockoff parts**, particularly on platforms like eBay or Amazon. These may fail prematurely, provide inaccurate readings, or even damage the ECM if they output incorrect signals. Always purchase from **trusted sellers** (e.g., RockAuto, Summit Racing, or reputable local shops).

2. **Coolant Contamination Risk** If the engine is hot when draining the coolant, sediment or debris may enter the sensor housing or cooling passages, leading to **clogged passages or premature sensor failure**. A **coolant flush** may be necessary if the system is dirty.

3. **ECM Learning Cycle** If the sensor is replaced after a long period of failure, the **Engine Control Module (ECM)** may need time to "learn" the new sensor s behavior. This can result in **temporary rough idle, hesitation, or check engine lights** until the ECM recalibrates (usually after **5 10 starts**).

4. **O-Ring or Thread Seal Failure** Some sensors (especially cheaper brands) may have **poorly molded O-rings or threads**, leading to coolant leaks. Always inspect the sensor s threads and O-ring for damage before installation.

5. **Compatibility with Modified Engines** In **high-performance or turbocharged applications**, the stock sensor may not provide sufficient accuracy for advanced tuning. A **high-response sensor** (e.g., **NGK or Motec**) may be required for precise control.

6. **Limited Lifespan in Harsh Conditions** If the vehicle operates in **extreme temperatures, corrosive coolant, or with frequent overheating**, the sensor may degrade faster than expected. Regular coolant changes and system maintenance can mitigate this.

7. **Diagnostic Challenges** If the sensor is intermittent (e.g., works sometimes but fails at others), pinpointing the issue can be difficult. Other components like **wiring, connectors, or the ECM** may need inspection.

8. **Potential for Overheating if Ignored** While replacing the sensor fixes the immediate issue, **underlying problems** (e.g., thermostat failure, coolant leaks, or water pump issues) may still exist. A **full cooling system inspection** is recommended during the repair.

---

### **Conclusion**

The **87GGJQ water temperature sensor** is a **practical and cost-effective solution** for Buick LeSabre owners experiencing temperature sensor failure. Its **OEM compatibility, ease of installation, and reliability** make it a strong choice for most applications. However, **quality varies significantly**, and **counterfeit parts are a major risk**. Additionally, **coolant system health** and **ECM recalibration** should be considered to ensure a smooth repair.

For **most stock or lightly modified vehicles**, this sensor is **highly recommended** as a direct replacement. If purchasing, **stick to reputable brands and sellers** (e.g., **ACDelco, Bosch, Delphi, or RockAuto**) to avoid counterfeit issues. If the vehicle has **performance modifications or severe coolant contamination**, consider a **higher-quality sensor** and a **coolant flush**.

---

### **Final Recommendation**

1. **Buy from a trusted source** (e.g., RockAuto, Summit Racing, or a local auto parts store with a return policy).

2. **Choose a reputable brand** (ACDelco, Bosch, or Delphi) for reliability.

3. **Inspect the sensor and O-ring** before installation to prevent leaks.

4. **Flush the cooling system** if it s been neglected to avoid debris contamination.

5. **Monitor for ECM recalibration** after replacement (expect minor adjustments over 5 10 starts).

6. **Consider a high-response sensor** if the vehicle is modified or used for performance tuning.

**Verdict:** The **87GGJQ sensor is a solid, cost-effective fix** for the Buick LeSabre s temperature sensor issue, provided you source it carefully and address any underlying cooling system problems. For most owners, it is **worth the investment** to restore proper engine function and prevent further damage.

Details:

Replacement Water Temperature Sensor fits Buick LeSabre 1985 - 1991 87GGJQ: Brand: condition: New Detailed Applications Years: Vehicle: Position: 1990 - 1991 Buick LeSabre, 1985 - 1989 Buick Right.

part #: 87ggjq price

  • $19.27

specifications ocoosys:

  • for models: Lesabre
  • for makes: Buick
  • for years: 1985-1991
  • mpn: 87ggjq
  • part type: Sensor
  • compatible make/model: Buick Lesabre
  • compatible years: 1985 1986 1987 1988 1989 1990 1991 85 86 87 88 89 90 91
  • fitment info: Engine Coolant Temperature Sensor
  • manufacturer warranty: 12 Month Warranty
  • attention: Read Full Description To Confirm Fitment
  • cs-sku: 400

seller ocoosys:

  • rating: 99.2%
  • # reviews: 23571
  • city: Chino, California

payments ocoosys:

  • other
  • wallet: Paypal
  • credit card: Discover

returns ocoosys:

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

shipping ocoosys:

  • class: Economy
  • transit: 3-9 Days
  • cost: $0.00
  • type: Fixed
  • service: Economy

general ocoosys:

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

offer ocoosys:

  • started: March 30, 2026
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • availability: In Stock
for models: lesabre, for makes: buick, for years: 1985-1991, part type: sensor, compatible make/model: buick lesabre, compatible years: 1985 1986 1987 1988 1989 1990 1991 85 86 87 88 89 90 91, fitment info: engine coolant temperature sensor, manufacturer warranty: 12 month warranty, attention: read full description to confirm fitment, cs-sku: 400,
category: auto parts > car truck parts accessories > engine cooling components, sku: 20706018660181731,
Buick 87GGJQ Is Similar To:
ocoosys logo
1 offer $19.27 USD
  • New. Offer #1 priced at $19.27 + $0.00 shipping estimate = $19.27* total. Detailed Applications. 1990-1991 Buick LeSabre.FREE SHIPPING

Copyright © ocoosys.com