1991 Isuzu Rodeo LS, RWD, AutomaticFACTORY OEM SERVICE PROCEDURE

Service Intervals & Specifications: Notes

REPLACEMENT INTERVALS

Component Interval (Miles)
Air Filter 30,000
Automatic Transmission Fluid (1) 30,000
Coolant 30,000
Front & Rear Axle Oil 15,000
Manual Transmission Fluid 15,000
Oil & Filter 7500
Oxygen Sensor
Amigo, Pickup, Rodeo & Trooper 2.6L 90,000
Spark Plugs 30,000
Timing Belt 60,000
Transfer Case Oil 15,000
(1) Fluid requires replacement only under severe operation. Severe operation is driving on rough dusty roads or repeated short trips.
ADJUSTMENT INTERVALS

Application Interval (Miles)
Valve Clearance
Amigo, Pickup & Rodeo 15,000
Trooper 2.6L (1) 15,000
(1) On Trooper 2.8L models, adjustment is only required when engine is repaired. No adjustment interval is given from manufacturer.
DRIVE BELT ADJUSTMENT

Application (1) Belt Deflection
Amigo, Pickup & Rodeo
All Belts (3/8)" (10 mm)
Trooper
2.6L
A/C Belt (3/8)" (10 mm)
Power Steering Belt N/A
W/P Belt N/A
2.8L (2)
(1) Deflection is checked with 22 lbs. (10 kg) pressure applied midway on longest belt run.
(2) Serpentine belt tension is automatically adjusted.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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