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Home >> Toyota >> 1995 >> MR2 2.2 S, Automatic >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul - 2.2L (Non-Turbo) >> Cooling System Bleeding
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Cooling System Bleeding

  1. Remove spare tire, front luggage compartment trim and upper radiator support seal. Connect air bleed hoses to heater and radiator air drain plugs. See Fig 1. Attach and support opposite end of air bleed hoses to hood. Ensure air bleed hoses are not pinched.
  2. Place heater control lever to the warmest position. Open heater and radiator air drain plugs at least 3 turns.
  3. Slowly add coolant through coolant filler. See Fig 1. Air will bleed from air bleed hoses on heater and radiator air drain plugs. Ensure coolant level in air bleed hoses and coolant filler are at the same level. See Fig 1.
  4. If coolant level in air bleed hoses is lower, air still exists in cooling system. Check for pinched or restricted air bleed hoses and repeat step 3). When proper coolant level is obtained in air bleed hoses, close heater and radiator air drain plugs. Remove air bleed hoses.
  5. Install radiator cap on coolant filler to the first stop point. DO NOT  fully tighten radiator cap to the second stop point. Start engine and allow engine to idle for 3 minutes. Shut engine off. Recheck coolant level in coolant filler.
  6. Add coolant if necessary and repeat step 5). Recheck coolant level. If proper coolant level exists, install radiator cap and fully tighten to the second stop point. Fill coolant reservoir tank to the FULL line. Reinstall upper radiator support seal, front luggage compartment trim and spare tire.

No special cooling system bleeding procedure is required.

Fig 1: Installing Air Bleed Hoses & Identifying Coolant Filler
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