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Home >> Jeep >> 1989 >> Wrangler L4-150 2.5L VIN E TBI >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Emission Control Systems >> System Specifications >> Maintenance Procedures >> Maintenance Schedules
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Maintenance Schedules





Emission Component


Emission System Elastomer Vacuum Hoses - Replace every 52,500 miles
Emission System Timer (Except Calif.) - Disconnect at 82,500 miles
Exhaust System (Calif. Only) - Check every 7,500 miles
Fuel Filler Cap - Replace every 52,500 miles
Fuel System Lines, Hoses and Connections - Inspect every 30,000 miles
Oxygen Sensor - Replace every 82,500 miles
[1][2]PCV Filter - Clean and re-oil every 30,000 miles
PCV Valve (Calif. Only) - Replace every 30,000 miles
PCV Valve (Except Calif.) - Replace every 82,500 miles
Spark Plugs - Replace every 30,000 miles
Spark Plug Wires - Replace every 52,500 miles
Thermostatic Air Cleaner Control Valve (Calif. only) - Inspect every 30,000 miles