Standard Ignition LDP03 Evaporative Emissions System Leak Detection Pump

OE-Style Leak Detection Pump for EVAP Systems

Standard Ignition LDP03 is a direct-fit evaporative emissions system leak detection pump for vehicles that use engine vacuum to verify EVAP system integrity. It is built for accurate leak detection and stable electrical signaling, making it a practical replacement for Jeep Cherokee and Jeep Grand Cherokee applications.

Key Features

• Direct-fit OE replacement for evaporative emissions leak detection service
• Uses engine vacuum to help detect proper EVAP system sealing
• Precision-calibrated diaphragm and spring support accurate switch voltage readings
• OE-quality connector and terminals for a precise harness connection
• High-temperature OE-style plastic housing for underhood durability
• Female connector with 3 blade terminals and 3 hose connectors
• Hose sizes: 1/4 in. and 5/8 in.

Detailed Description

The Standard Ignition LDP03 is engineered as an OE replacement evaporative emissions system leak detection pump for 1998-2001 Jeep Cherokee and 1998-2000 Jeep Grand Cherokee models. It is built to restore accurate EVAP leak monitoring by using engine vacuum and a calibrated diaphragm-and-spring design that helps the switch report consistent voltage readings. The OE-style connector, male blade terminals, and high-temperature housing support a secure electrical connection and reliable fit in demanding engine-bay conditions. This part number, LDP03, is a direct replacement choice for Jeep Cherokee and Jeep Grand Cherokee EVAP diagnostics where precise leak detection is required.

This part cross-references Dorman OE Solutions 310-201 for the same application.

What It Helps Address

• EVAP leak detection faults
• Check engine lights related to evaporative emissions monitoring
• Improper vacuum-based leak test readings
• Electrical connection issues at the leak detection pump
• Fitment problems caused by worn or damaged OE-style pump housings

Installation Notes and Tips

Verify connector style, hose sizes, and mounting location before installation. Confirm the vehicle is a 1998-2001 Jeep Cherokee, Left Hand Drive, or a 1998-2000 Jeep Grand Cherokee before ordering. Inspect EVAP hoses and wiring for cracks, corrosion, or looseness so the replacement pump can operate correctly. Standard Ignition LDP03 should be installed with attention to hose routing and secure terminal engagement to maintain accurate EVAP system performance.

Quality Assurance

Standard Ignition builds this pump as an OE-style replacement with calibrated internal components, OE-quality electrical interfaces, and a high-temperature housing for dependable service in EVAP system applications.