A model-specific diagnostic approach
Begin by identifying the exact chassis, engine, transmission and options. Record when the problem occurs, preserve freeze-frame data and perform a full relevant module scan. Distinguish mechanical, electrical, hydraulic and software causes through direct testing rather than replacing the component named by a code.
Manufacturer-specific considerations
A research case or technical bulletin may identify a possible diagnostic path, but it is not proof that a particular customer's vehicle has the same fault.
Repair confirmation
Verify the repair by reproducing the original operating conditions and confirming no related faults return.
The source research addresses Range Rover Sport applications described as 2013–2024 (Range Rover Sport L320; Range Rover Sport L494). The correct testing depends on the exact year, engine, drivetrain and equipment.
Symptoms an owner may notice
Intermittent stall at idle or when coming to a stop with P2279.
Engine tapping/knocking at idle.
Camshafts returned loose in a box after head machining and needed correct intake/exhaust identification.
Power tailgate would not close/double-latch after replacement for light impact damage.
Codes documented in the research include P2279, U3007. A code indicates a monitored condition and is not proof that one particular component failed.
What diagnosis involves
The available case notes describe checks such as Smoke-test intake system; Review idle fuel trims; Measure camshaft overall lift; Compression test. The actual vehicle must be evaluated before any repair recommendation.
Findings recorded in the cases included No leak found; About 0-5; Intake 10 mm; exhaust 9.36 mm. These observations may guide testing but cannot be assumed on another vehicle.
Documented causes and repair decisions
In the researched cases, identified causes included Camshaft identities/positions lost after machine-shop handling; Auxiliary battery voltage measured at 5.5 V, reducing brake-booster module assist; Service-reset prerequisites omitted that the hood and driver door must both be open. A different vehicle with the same symptoms may have a different underlying problem.
Reported successful repairs in the research included Install camshafts according to lift measurement and complete rebuild; Open hood and driver door before service reset. These are external case outcomes, not claims that Mich’s performed those specific repairs.
Some attempted repairs were ineffective or temporary, including Customer replaced MAF sensor — unsuccessful; Customer replaced MAP sensor — unsuccessful. That is one reason to verify the failure before replacing components.
If your Range Rover Sport has a similar symptom, contact Mich’s Foreign Cars in Hickory, NC at 828-324-6012. Share the model year, engine, exact warning messages and the conditions when the problem occurs.