Vehicle
Jeep Wrangler
The ladder-frame four-wheel drive, and the vehicle in this catalogue most likely to have been modified. Lift kits, larger tyres and re-geared axles all change what the stability, wheel-speed and transmission systems consider normal, so a code on one is worth reading alongside what has been changed — the corpus describes a standard vehicle. The 4xe plug-in version adds the hybrid and charging blocks to a nameplate that had none.
Generations
-
YJ 1986–1995
The square-headlamp YJ with leaf springs and the 4.2 and 4.0 straight-sixes; the renix injection of the earliest cars needs its own procedure.
- Body styles
- SUV · Convertible
- Platform
- Jeep YJ
- Engines
-
- 2.5 four-cylinder — petrol
- 4.2 straight-six — petrol
- 4.0 straight-six — petrol
- Transmissions
- 3-speed automatic · 5-speed Aisin AX-5 manual · 5-speed Aisin AX-15 manual · 5-speed Peugeot BA-10/5 manual
- Drivetrain
- Part-time four-wheel drive with low range
-
TJ 1996–2006
The straight-six era; mechanically simple and still working in large numbers.
- Body styles
- SUV
- Platform
- Jeep TJ
- Engines
-
- 2.4 four-cylinder — petrol
- 2.5 four-cylinder — petrol
- 4.0 straight-six — petrol
- 2.5 diesel — diesel
- 2.8 CRD — diesel
- Transmissions
- 3-speed TorqueFlite 30RH automatic · 3-speed TorqueFlite 32RH automatic · 4-speed Ultradrive 42RLE automatic · 5-speed Aisin AX-5 manual · 5-speed Aisin AX-15 manual · 6-speed Chrysler NSG370 manual
- Drivetrain
- Part-time four-wheel drive with low range
-
JK 2006–2018
Pentastar V6 from 2012; a much more networked vehicle than the TJ.
- Body styles
- SUV
- Platform
- Jeep JK
- Engines
-
- 3.8 V6 — petrol · 146 kW (196 hp) · 315 Nm (232 lb-ft)
- 3.6 V6 — PENTASTAR · petrol · 209 kW (280 hp) · 347 Nm (256 lb-ft)
- 2.8 CRD — diesel · 147 kW (197 hp) · 410–460 Nm (302–339 lb-ft)
- 3.0 — petrol
- Transmissions
- 4-speed Ultradrive 42RLE automatic · 5-speed Chrysler 545RFE automatic · 6-speed Chrysler NSG370 manual
- Drivetrain
- Part-time four-wheel drive with low range
-
JL 2018–present
Turbocharged four with a 48-volt system, and the 4xe plug-in hybrid.
- Body styles
- SUV · Pickup
- Engines
-
- 2.0 turbo — mild hybrid
- 3.6 V6 — PENTASTAR · petrol · 209 kW (280 hp) · 347 Nm (256 lb-ft)
- 2.0 turbo 4xe — plug-in hybrid
- 3.0 EcoDiesel V6 — diesel
- 6.4 — petrol
- 2.2 turbo — diesel
- Transmissions
- 6-speed Aisin AL6 manual · 8-speed ZF 8HP75 automatic
- Drivetrain
- Part-time four-wheel drive with low range
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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