OE Quality
60-Day Returns

Cardone 78-6859 Engine Control Module
Overview of Cardone Engine Control Module 78-6859
The Cardone Engine Control Module (ECM) part number 78-6859 is designed specifically for Ford Explorer models. This ECM plays a critical role in managing engine functions and ensuring optimal vehicle performance.
- Compatible with Ford Explorer vehicles
- Part number 78-6859 for precise fitment
- Part of Cardone's Engine Control Module product line
- Supports engine management and control functions
- Includes important programming and reset considerations
About the Cardone Engine Control Module Product Line
The Cardone Engine Control Module product line focuses on delivering reliable replacement ECMs engineered to meet or exceed OEM specifications. This product line includes modules designed to integrate seamlessly with vehicle systems, providing accurate engine control and diagnostics. The 78-6859 ECM is part of this line, ensuring compatibility and performance for Ford Explorer applications.
Detailed Product Description
The Cardone 78-6859 ECM is a direct replacement module engineered for Ford Explorer vehicles. It controls critical engine functions such as fuel injection, ignition timing, and emissions systems. Proper installation and programming are essential for the module to function correctly. This ECM requires VIN programming in some cases, especially for Chrysler PCM models with a "v" suffix, and may involve passive anti-theft system (P.A.T.S.) considerations for Ford vehicles. Not all Ford vehicles require a P.A.T.S. reset, so verifying the system before installation is recommended.
Common Issues Addressed by This ECM
- Engine misfires or poor performance due to faulty ECM
- Check engine light triggered by ECM errors
- Vehicle starting problems related to ECM or P.A.T.S. system
- Communication errors between engine sensors and control module
- Failure to pass emissions tests caused by ECM malfunction
Installation Notes and Tips
- Verify the original ECM is the cause of the issue before replacement
- Ensure the replacement ECM matches the Ford Explorer’s engineering specifications
- VIN programming may be required for Chrysler PCM models with a "v" suffix
- Check if a P.A.T.S. reset is necessary for your specific Ford Explorer model
- Use a compatible diagnostic tool such as a Tech 2 scanner for programming and reset procedures
Quality Assurance and Warranty
Cardone Engine Control Modules, including part number 78-6859, are manufactured to meet strict quality standards. While specific warranty details are not provided here, Cardone typically offers coverage against defects in materials and workmanship. Proper installation and programming are critical to ensure the module functions as intended.
This part fits 1 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1997 | Ford | Explorer | 4.0L | V6 | N/A | with Calibration # 7-57R; Emission Calibration / Tear Tag on Front Door Jams, in Trunk, or Under Hood; This Unit is Pre-Programmed at the Factory; Engine Control Module |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.