1. Pedal Assemblies Deals
  2. sku: 28545574831992741
  3. ISUZU HISU-LCF

ISUZU 546.ISHL14 Npr Nqr Nrr Throttle Pedal Hisu 12119095

fits make: Isuzu. year: 2014.

546.ishl14 Isuzu 2014 Npr Nqr Nrr Throttle Pedal 12119095

( Model: HISU-LCF ), ( Part Type: Throttle Pedal ), ( Conditions Options: At, Throttle, Nqr, Tis ), ( Genuine Oem: Yes ), ( Ipn: 546.ishl14 )

Review ISUZU Npr Nqr Nrr Throttle Pedal fits 2014

The **Isuzu 546 ISHL14 (2014 model) NPR, NQR, and NRR throttle pedal assembly (part number 12119095)** is a precision-engineered component designed specifically for the heavy-duty diesel engine lineup produced by Isuzu, renowned for its reliability and performance in commercial and industrial applications. This throttle pedal assembly is a critical part of the vehicle s powertrain system, directly influencing throttle response, engine control, and overall drivability. Crafted from high-grade materials, the pedal assembly features a durable, corrosion-resistant construction to withstand the demanding conditions of frequent use in trucks, buses, and specialized work vehicles. The design incorporates a smooth, ergonomic pedal mechanism that ensures consistent and responsive operation, allowing operators to modulate engine power with precision, whether accelerating smoothly or engaging in heavy-duty towing or payload handling. Compatible with the 2014 Isuzu 546 engine variants including the NPR (Neutral Start, Rear Wheel Drive), NQR (Neutral Start, 4x4), and NRR (Neutral Start, Rear Wheel Drive with rear axle ratio options) this part is engineered to integrate seamlessly with the engine s electronic control unit (ECU) and throttle-by-wire systems, ensuring optimal synchronization between driver input and engine performance. Whether used in construction, logistics, or off-road applications, this throttle pedal assembly enhances operator control, reduces wear on the engine s throttle linkage, and contributes to the longevity of the vehicle s drivetrain. Its robust build and compatibility with Isuzu s advanced engine management systems make it an essential replacement or upgrade for maintaining peak operational efficiency in demanding environments.

### **Pros and Cons of buying a Isuzu 546 (ISH-L14, 2014, NPR/NQR/NRR, Throttle Pedal Issue: 12119095)**

#### **Overview**

The **Isuzu 546 (ISH-L14)** is a medium-duty truck built between 2009 and 2014, known for its durability, fuel efficiency, and reliability in commercial and agricultural applications. The **2014 model** with **NPR (dump truck), NQR (flatbed), and NRR (cab-over)** configurations remains a practical choice for businesses needing a dependable workhorse. However, the **throttle pedal issue (code 12119095)** is a critical factor that must be addressed before purchasing.

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### **Pros**

1. **Proven Reliability**

- The Isuzu 546 is well-regarded for its **engine longevity**, particularly the **4JH1 diesel engine (4.1L)**, which is known for lasting **300,000 miles** with proper maintenance.

- Many owners report **few major mechanical failures** if the truck is well-maintained.

2. **Fuel Efficiency**

- The **4JH1 engine** delivers **good MPG for its class**, typically **8-12 MPG** depending on load and driving conditions, making it cost-effective for commercial use.

- Compared to larger diesel trucks, it consumes less fuel, reducing operational costs.

3. **Durable Construction**

- The **cab and chassis** are built to withstand heavy-duty work, with **rust-resistant galvanized steel** in many models.

- The **transmission (manual or automatic)** is robust, with the **6-speed manual** being particularly durable.

4. **Affordable Purchase & Maintenance Costs**

- Used **2014 Isuzu 546s** are **significantly cheaper** than newer models, making them a budget-friendly option for businesses.

- **Parts and labor costs** are generally lower than those of competitors like Ford or Chevrolet, though availability can vary by region.

5. **Versatile Configurations**

- Available in **NPR (dump truck), NQR (flatbed), and NRR (cab-over)**, allowing buyers to choose based on their specific needs.

- The **cab-over (NRR) model** is particularly useful for tight spaces and urban deliveries.

6. **Good Resale Value**

- Compared to some Japanese commercial trucks, the Isuzu 546 holds its value reasonably well, especially if well-documented.

7. **Ease of Repairs**

- Many mechanics are familiar with the **Isuzu 4JH1 engine**, making repairs more accessible than on some lesser-known brands.

- **Common issues** (like fuel injectors or turbocharger wear) are well-documented, aiding in troubleshooting.

---

### **Cons**

1. **Throttle Pedal Issue (Code 12119095) Major Concern**

- The **throttle pedal malfunction** (often linked to **throttle position sensor (TPS) failure, wiring issues, or accelerator pedal actuator problems**) is a **common complaint** in these trucks.

- Symptoms include:

- **Unresponsive throttle** (truck jerks, stalls, or fails to accelerate).

- **Random speed fluctuations** (especially in automatic models).

- **Check Engine Light (CEL) with code 12119095** (Isuzu s code for throttle-related issues).

- **Repair Costs:**

- Replacing the **throttle position sensor** ( $100 $300 installed).

- Fixing **wiring harness damage** (if applicable, could be higher).

- Replacing the **accelerator pedal actuator** (if electronic, $200 $500).

- **Diagnostic labor** can add **$100 $200** depending on the shop.

- **Risk:** If the issue is **electrical or wiring-related**, it may recur if not properly addressed.

2. **Electrical System Reliability**

- Some owners report **frequent electrical gremlins**, including:

- **Faulty sensors** (oxygen sensor, mass airflow sensor).

- **Alternator or starter failures** (common in older diesel trucks).

- **Poor wiring connections** leading to intermittent issues.

- **Solution:** A **full electrical system inspection** is **highly recommended** before purchase.

3. **Transmission Wear in High-Mileage Units**

- While the **6-speed manual** is durable, **automatic transmissions (if equipped)** can develop **slippage or delayed shifting** after **200,000 miles**.

- **Symptoms:** Rough shifting, delayed engagement, or **transmission fluid leaks**.

- **Repair Cost:** Transmission rebuild ( $3,000 $5,000) or replacement ( $6,000 ).

4. **Rust & Frame Issues (If Not Well-Maintained)**

- Some **2014 models** show **rust in wheel wells, frame rails, and undercarriage**, especially in **snowy or coastal regions**.

- **Pre-purchase inspection** should include a **frame inspection** for cracks or corrosion.

5. **Limited Availability of Newer Parts**

- While **basic parts** (oil filters, belts, brakes) are still available, **some specialized components** (e.g., turbochargers, injectors) may require **extended lead times**.

- **OEM vs. Aftermarket:** Some buyers opt for **aftermarket parts**, which can be cheaper but may have **mixed reliability**.

6. **Cabin Comfort & Noise**

- The **cab insulation** is **not as soundproof** as some competitors (e.g., Ford Super Duty), leading to **higher cabin noise** at highway speeds.

- **Heating/AC performance** can be **marginal in cold climates**, though this is less critical for work trucks.

7. **Emissions & Modern Compliance**

- The **2014 model** meets **EPA 2010 emissions standards**, but **future compliance updates** may require **DPF (Diesel Particulate Filter) or EGR (Exhaust Gas Recirculation) maintenance**.

- **DPF clogging** can occur if the truck is used for **short trips or heavy idling**, requiring **regeneration cycles**.

---

### **Critical Pre-Purchase Steps**

Before buying, **conduct the following inspections and tests**:

1. **Throttle Pedal & Electrical System**

- **Test the throttle response** Does it accelerate smoothly, or are there jerks/stalls?

- **Scan for codes** Confirm if **12119095** is the only code, or if others (e.g., fuel system, sensors) are present.

- **Inspect wiring** Look for **burn marks, frayed wires, or loose connections** near the pedal and throttle body.

- **Check the throttle position sensor (TPS)** A **multimeter test** can verify if it s reading correctly.

- **Test the accelerator pedal actuator (if electronic)** Some models use a **drive-by-wire system**, which can fail over time.

2. **Transmission & Drivetrain**

- **Shift through all gears** Listen for **grinding, hesitation, or delayed engagement**.

- **Check transmission fluid** Should be **clean, not burnt-smelling, and at proper levels**.

- **Inspect driveshafts & U-joints** Look for **leaks, cracks, or excessive play**.

3. **Engine & Cooling System**

- **Check for leaks** Oil, coolant, or power steering fluid leaks under the hood.

- **Test compression** A **low compression reading** could indicate **worn rings or valves**.

- **Inspect turbocharger** Listen for **excessive whine** (sign of wear).

- **Verify fuel injectors** **Misfires or black exhaust smoke** may indicate injector failure.

4. **Brakes & Suspension**

- **Test brake pedal feel** Should be **firm, not spongy or hard**.

- **Check brake fluid level & condition** **Low or dark fluid** suggests leaks or wear.

- **Inspect shocks & struts** **Leaking or bottoming out** indicates suspension failure.

- **Check wheel bearings** **Growling noise when turning** means replacement is needed.

5. **Frame & Underbody**

- **Look for rust** Especially in **wheel wells, frame rails, and crossmembers**.

- **Check for weld repairs** Some sellers may have **hidden frame damage** that was welded.

- **Inspect exhaust system** **Holes or excessive rust** can lead to **emissions failures**.

6. **Documentation & Service History**

- **Request full service records** Look for **oil changes, filter replacements, and major repairs**.

- **Check for accident history** Frame damage can **compromise structural integrity**.

- **Verify mileage accuracy** **Clock tampering** is common

Details:

4HK1-TC,AT,THROTTLE,NQR,TIS. Labor and costs associated with part installation are not covered under warranty.

part #: hisu price

  • $73.68

specifications pedalspadsaz:

  • for makes: Isuzu
  • for years: 2014
  • model: Hisu-lcf
  • part type: Throttle Pedal
  • conditions options: At, Throttle, Nqr, Tis
  • genuine oem: Yes
  • ipn: 546.ishl14

payments pedalspadsaz:

  • credit card: Discover
  • wallet: Paypal
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shipping pedalspadsaz:

  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
  • carrier: FedEx
  • transit: 2-5 Days
  • type: Fixed
  • cost: $0.00

general pedalspadsaz:

  • Car Truck Parts Accessories > Interior Parts Accessories > Pedal Assemblies, Pads Parts
  • condition: Used

returns pedalspadsaz:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 60 Days

seller pedalspadsaz:

  • # reviews: 50325
  • city: Spokane, Washington
  • rating: 99.9%

offer pedalspadsaz:

  • sold: 0
  • options: Ship-to-home
  • started: May 7, 2026
  • quantity: 1
  • best offers: True
  • availability: In Stock
for makes: isuzu, for years: 2014, part type: throttle pedal, conditions options: at, throttle, nqr, tis, genuine oem: yes,
category: auto parts > car truck parts accessories > interior parts accessories > pedal assemblies, pads parts, sku: 28545574831992741,
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  • Used. Offer #1 priced at $73.68 + $0.00 shipping estimate = $73.68* total. Labor and costs associated with part installation are not covered under warranty 4HK1-TC,AT,THROTTLE,NQR,TIS.FREE SHIPPING

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