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The information presented here will only apply to 1997-2001 Jeep Cherokees with the 4.0L.
GAUGES:
-Tachometer: Measures engine speed.
Normal Idle: 750 RPM warm, slightly higher when cold
Redline: 5,200 RPM
-Speedometer: Measures vehicle speed
-Voltmeter: Measures current voltage
Normal: 12v when off, 13.6v while running.
-Fuel Gauge: Available Fuel (%)
Normal: 2.5 Gallons to 20.2 Gallons
-Oil Pressure: Engine oil pressure (PSI)
Normal: 20 PSI at warm idle, 30-60 PSI while driving
Lowest acceptable oil pressure is 13 PSI.
-Temperature gauge: Engine coolant temp (Degrees F)
Normal: 200-210 while running. May get hotter on warm days and with hard use.
LIGHTS:
-“Low Washer” means you need more windshield washer fluid
-Sentry Key Immobilizer means the incorrect key was used to start the vehicle (1998-2001 only)
-”Cruise” means the Cruise control system is active (Cruise equipped models only)
-Turn Signals mean the turn signals or hazards are active
-High Beam Indicator means the brights are on
-Seat Belt Reminder reminds you to wear a seatbelt
-”Part Time” means part time 4wd is engaged (4wd only)
-”Full Time” means full time 4wd is engaged (Selec-trac only)
-Upshift Indicator tells you when to shift into the next gear (Manual only)
-Low Fuel means you have about 5 seconds to get gas or you’re dead
-Hatch Indicator means the rear liftgate is open (1998-2001 only)
-”Brake” means the parking brake is engaged, OR the braking system is compromised
-”ABS” means the ABS system is active, OR the ABS system is compromised (ABS models only)
-”Check Engine” means the computer has detected a fault in the OBD-II system.
-”Check Gauges” means one or more of the gauges is reading abnormal levels
-”Airbag” means the airbag system is compromised
I mentioned a Rear Main Seal replacement tutorial: • Jeep Cherokee - Rear M...