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Coolant bleeder valve - no heat at idle

 
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bobbyg1975
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2006 Chevrolet Impala


PostPosted: Fri Dec 03, 2010 10:44 am    Post subject:  Coolant bleeder valve - no heat at idle Reply with quote

2006 impala 3.5L V6 - where is the bleeder valve in the coolant system? I get cold air when idling and hot when revving just a bit. It was low on fluid but after several cycles of running to norm op temps its still blowing cold at idle. A pic of the bleeder or a step-by-step to bleed the air would be helpful! Thanks all!
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Q-Bert
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2006 Chevrolet Impala


PostPosted: Fri Dec 03, 2010 10:58 am    Post subject:   Reply with quote

i've read a couple people on the forum have just squeezed the upper hose until the overflow burps a couple of times and that took care of the air-lock.

Isn't there a bleeder on the thermostat housing?
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chibiblacksheep
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PostPosted: Fri Dec 03, 2010 11:10 am    Post subject:   Reply with quote

welcome to the newly designed coolant system without a bleeder valve.

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Bill58
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PostPosted: Fri Dec 03, 2010 1:05 pm    Post subject:   Reply with quote

From Don's Repair Manual

Cooling System Filling (LZE, LZ4, LZ9 Static Fill)

Filling Procedure

1. Close the radiator drain c0ck.
2. If a complete engine block drain was required, install the coolant drain plugs to the engine block. Refer to Draining Fluids and Oil Filter Removal for the 3.5L engine or to Draining Fluids and Oil Filter Removal for the 3.9L engine.
Important: Use a 50/50 mixture of DEX-COOL antifreeze and clean, drinkable water.
3. Slowly fill the cooling system with a 50/50 coolant mixture until the coolant level is visible and stable. Refer to Approximate Fluid Capacities.
4. Install the pressure cap loosely (threaded on about one turn).
5. Start the engine and raise the engine speed to 2500 RPM and hold it there for 40 seconds, then shut engine off.
6. Remove the pressure cap and fill the coolant system until the level is visible and stable.
7. Install the pressure cap loosely (threaded on about one turn).
8. Start the engine and raise the engine speed to 2500 RPM and hold it there for 30 seconds, then shut engine off.
9. Remove the pressure cap and fill the coolant system until the level is visible and stable.
10. Install the pressure cap loosely (threaded on about one turn).
11. Start the engine and raise the engine speed to 2500 RPM and hold it there for 20 seconds, then shut engine off.
12. Remove the pressure cap and fill the coolant system until the level is visible and stable.
13. Install the pressure cap, fully threaded on.
14. Fill the coolant recovery bottle to the indicator line, then add 400 milliliters (13.5 ounces) more.
15. Start the engine and run it above 2500 RPM until it is hot enough to open the thermostat, this will allow the trapped air to be purged from the engine.
16. Complete a series of three, 4-second-duration idles with 4-second-duration 3000 RPM cycles.
17. Turn the engine off and allow it to cool down to room temperature.
18. Fill the coolant recovery bottle to the indicator line.
19. Inspect the concentration of the engine coolant using the J 26568 .
20. Rinse away any excess coolant from the engine and the engine compartment.
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