Question about 2001 Pontiac Aztek

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I replaced the alternator on my 2003 Range Rover

So I had to disconnect the top radiator hose. Now I started the car and the heat gauge goes all the way up. I added anti-freeze and bled the system

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I Suspect that you have AIR in your COOLING SYSTEM Fallow Procedures BELOW to Insure there is NO AIR IN COOLING SYSTEM


Draining and Filling Cooling System

Draining Procedure

Important: Do NOT add any engine coolant supplement sealant pellets to the cooling system. Drain and refill the engine cooling system every 5 years or 240,000 km, (150,000 mi) , whichever occurs first.

  1. Park the vehicle on a level surface.
  2. Remove and clean the coolant recovery reservoir.
Caution: Refer to Radiator Cap Removal Caution in Service Precautions.

  1. Remove the radiator cap when the engine is cool:
3.1. Slowly rotate the cap counterclockwise to the detention tab. Do not press down while rotating pressure cap. 3.2. Wait until any residual pressure, indicated by a hissing sound, is relieved. 3.3. After all hissing stops, press down on the radiator cap and rotate the cap counterclockwise in order to remove the cap.
Important: Recover and store used coolant in a used coolant holding tank and submit the used coolant for recycling on a regular basis. Do NOT pour used coolant down the drain. Ethylene glycol antifreeze is very toxic. Disposing of ethylene glycol into the sewer system or ground water is both illegal and ecologically unsound.

  1. Place a drain pan under the radiator drain valve in order to collect all of the used coolant.
  2. Open the radiator drain valve located at the bottom of the radiator tank. If only partial cooling system draining is required, drain enough coolant to perform the procedure.
  3. Open the air bleed valve on the thermostat housing 2 full turns
    1. Open the air bleed valve above coolant pump 2 full turns.
    2. Place a drain pan under the engine block drains in order to collect the used coolant.Important: Allow the coolant to drain completely.

      1. Remove both of the engine block drains.
        • The front left engine block drain is located between the starter motor and the engine oil filter.
        • The rear right engine block drain is located near the crankshaft position sensor.
      Filling Procedure
      Reinstall the engine block drains
    3. Close the radiator drain valve,
      1. Install the coolant recovery reservoir. Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL or HAVOLINE DEX-COOL coolant. If Coolant other than DEX-COOL or HAVOLINE DEX-COOL is added to the system the engine coolant will require change sooner; at 50,000 km (30,000 mi) or 24 months.
      2. Slowly add a 50/50 mixture of GM Goodwrench DEX-COOL or HAVOLINE DEX-COOL and clean, drinkable water to the radiator until the coolant level is at the base of the radiator fill neck.
      3. Wait for 2 minutes and reinspect the level of the coolant in the radiator. If necessary, add coolant to the radiator until the coolant level is at the base of the radiator fill neck.
      4. Install the radiator cap.Ensure that the radiator cap arrow points toward the radiator overflow tubeImportant: The air bleed valves are brass. Do NOT over-tighten the air bleed valves.

        1. Close the air bleed valve above the coolant pump.
          1. Close the air bleed valve on the thermostat housing.
          2. Fill the coolant reservoir with a 50/50 mixture of GM Goodwrench DEX-COOL or HAVOLINE DEX-COOL and clean, drinkable water. Caution: Refer to Radiator Cap Removal Caution in Service Precautions. Important: If the coolant temperature indicator turns ON, turn the engine OFF immediately and allow the engine to cool. Do NOT remove the radiator cap.
          3. Start the engine and allow the engine cooling fan to cycle on and off 3 times. If the low coolant indicator does not turn OFF and the coolant level is above the Full Cold mark on the coolant recovery reservoir, refer to Engine Coolant Temperature Gage Inaccurate or Inoperative.
          4. Turn off the ignition.
          5. Allow the engine to cool.
          6. Ensure that the engine coolant concentration is sufficient.

Posted on Feb 21, 2009

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in newer cars this tell the motor if it is OK to start
if the button thinks that the motor is going to be in danger of overheating when starting then it will not allow it to run
the button is not connected to the temperature gauge in your dash bored
this could mean that you may need your cooling system flushed out
very easy i do it once a month to my car


  1. while the motor is cold, on the top of the radiator there is a hose disconnect that not using the smallest amount for force not to break the radiator.
  2. have a running hose ready to go with it turned on and the radiator cap off
  3. start the car and leave it run
  4. quickly got the the radiator and place the hose in the top of the radiator
  5. this will flush out any dirt build up around the button and may help the problem
  6. TURN OFF THE CAR THEN TAKE THE HOSE OUT
  7. put the hose back on the radiator and make shaw it is tight with out damaging the radiator
  8. start the car and fill with coolent
  9. take for a short drive close to home to make shaw you have put the hose on properly
  10. go home and let car sit for about 2 hours
  11. check the radiator and fill if needed
WHEN YOU DO THIS MAKE SHAW YOU DON'T HAVE A WARM MOTOR OR YOU MAY RISK CRACKING THE HEAD OF YOUR MOTOR THIS IS VERY EXPENSIVE IT MUST BE COLD
ALSO DONT RUN THE CAR WITH NO WATER IN IT BUT ALSO IN SAYING THAT YOU MUST RUN THE CAR BEFORE PUTING THE HOSE IN THE TOP WHERE THE CAP GOES
WHEN DRIVING THE CAR FOR THE FIRST TIME DONT LET THE CAR OVER HEAT IF HOSE COMES OFF THATS WHY YOU NEED TO STAY CLOSE TO HOME

hope this helps
ricko

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