Jeep Wrangler 2018-2025 Owners Manual / STARTING AND OPERATING / NORMAL OPERATION — DIESEL ENGINE / Engine Idling

Jeep Wrangler: NORMAL OPERATION — DIESEL ENGINE / Engine Idling

Avoid prolonged idling, long periods of idling may be harmful to your engine because combustion chamber temperatures can drop so low that the fuel may not burn completely. Incomplete combustion allows carbon and varnish to form on piston rings, cylinder head valves, and injector nozzles. Also, the unburned fuel can enter the crankcase, diluting the oil and causing rapid wear to the engine.

Cold Weather Precautions

Operation in ambient temperature below 32°F (0°C) may require special considerations. The following charts suggest these options: Fuel Operating Range NOTE: Use “Ultra Low Sulfur Diesel Fuels (ULSD)” ONLY...

Stopping The Engine

After full load operation, idle the engine for a few minutes before shutting it down. This idle period will allow the lubricating oil and coolant to carry excess heat away from the turbocharger...

Other information:

Jeep Wrangler 2018-2025 Owners Manual: Symbol Glossary

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Jeep Wrangler 2018-2025 Owners Manual: PUBLICATION ORDER FORMS

To order the following manuals, you may use either the website or the phone numbers listed below. Service Manuals These comprehensive Service Manuals provide a complete working knowledge of the vehicle, system, and/or components and is written in straightforward language with illustrations, diagrams, and charts...

Manual Front Seat Forward/Rearward Adjustment

The seat can be adjusted forward or rearward by using a bar located by the front of the seat cushion, near the floor. While sitting in the seat, lift up on the bar located under the seat cushion and move the seat forward or rearward. Release the bar once you have reached the desired position. Then, using body pressure, move forward and rearward on the seat to be sure that the seat adjusters have latched.

Jeep Wrangler. Manual Front Seat Forward/Rearward Adjustment

Adjustment Bar Location