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Abstract:
This video focuses on the Ford Ranger 3.2L diesel engine and its associated automatic transmission. The presenter first addresses a troubleshooting case involving a customer's Ranger experiencing severe engine knocking and rattling noises, particularly during cold starts and light acceleration. The suspected cause is identified as faulty injectors, despite a previous engine replacement and injector check. New injectors have been ordered to resolve the issue. Subsequently, the video shifts to showcasing the benefits of custom transmission (gearbox) software tuning performed on another Ranger 3.2L. A test drive demonstrates improved shift logic, reduced torque converter slip, lower cruising RPMs, enhanced responsiveness, and the enabling of sixth gear usage even when towing. The presenter highlights the comfort and potential fuel economy gains but notes an ongoing challenge in enabling a permanent gear indicator display in automatic modes, requesting community input. A brief anecdote about jump-starting a vehicle with a lithium battery is also included.
Troubleshooting and Tuning the Ford Ranger 3.2L Diesel
0:09 Introduction: The video addresses inquiries about the Ford Ranger 3.2L, covering both tuning and troubleshooting.
0:15 Troubleshooting Case: A specific Ranger exhibits extreme knocking and grooving noises, having previously suffered an engine failure (melted piston) and received a replacement engine.
0:28 Cold Start Demonstration: A cold start of the problematic Ranger clearly reveals loud rattling, creaking, and uneven running.
2:04 Diagnosis: Based on the combustion knocking sounds during light acceleration, the presenter strongly suspects faulty fuel injectors are the cause, even though the existing ones were previously checked and deemed okay by a Bosch service department.
2:08 Planned Solution: Five new injectors have been ordered and will be installed and programmed into the five-cylinder engine to rectify the noise issue.
3:18 Shift to Tuning Discussion: The video transitions to discussing the positive aspects of the 3.2L Ranger, particularly its large displacement and tunable automatic gearbox.
3:40 Custom Gearbox Software Benefits: The presenter discusses the positive results of their custom transmission software, mentioning smoother driving, improved shift points, and enabling the use of 6th gear even when the trailer detection is active.
4:01 Minor Issues (Tuned Vehicle): The Ranger used for the tuning demonstration has minor issues like a slightly leaking water pump and low coolant, which are scheduled for repair.
4:24 Test Drive Begins: A test drive is initiated to demonstrate the effects of the custom gearbox software.
4:42 Lithium Battery Anecdote: A brief diversion about the difficulty of charging/jump-starting a modern lithium car battery that has entered a low-voltage protection mode.
6:28 Gearbox Cold Behaviour: Explanation of how the automatic transmission allows more torque converter slip when cold to help the gearbox oil warm up faster through friction.
7:34 Tuned Gearbox Demonstration (Warm): Shows the cruising behaviour and gear changes with the custom software, highlighting smoother operation and reduced converter slip compared to stock.
8:37 Tuning Goals Explained: The aim is to achieve comfortable, "BMW-like" shifts, prevent unnecessary high revving, engage higher gears sooner when cruising, and minimize converter slip/droning for a more direct feel and potentially better fuel efficiency.
10:08 Driving Impressions: The tuned Ranger cruises comfortably at low RPMs (e.g., under 80 km/h at 1400 RPM) and accelerates smoothly without excessive engine noise or unnecessary downshifts.
11:22 Offer for Owners: Viewers with Ford Rangers interested in engine or transmission software tuning are invited to get in touch.
12:02 Unresolved Tuning Challenge: The presenter notes they are still working on enabling the permanent gear indicator display in Drive (D) and Sport (S) modes (it currently only shows in Manual mode) and asks viewers for any coding tips or knowledge.
13:17 April Fool's Joke: A concluding jest about offering transmission software for manual gearboxes.