Question about 2001 Oldsmobile Silhouette

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Olds silhouette heater blows cold air

What can you check on Oldsmobile Silhouette 2001 will not blow hot air?
We replaced thermostat already .
Gaskets have been changed 2 years ago.

Help!

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  • 5 more comments 
  • carolinenero Nov 16, 2008

    The engine temperature is normal so I can I locate and flush the heater core.



    Do you have a diagram or can you give me more details on how to proceed.

    Thank you so much in advance!

  • eightstages Apr 12, 2009

    heater blows cold air, i have replaced the fuse

  • Anonymous Mar 12, 2014

    how much will it cost

  • Anonymous Mar 24, 2014

    no heat coming out

  • Anonymous Mar 30, 2014

    rear quarter windows don't open up any more, but worked fine all last year and now won't open now

  • Anonymous Mar 30, 2014

    worked fine all last year

  • Anonymous Mar 30, 2014

    for head gasket replacement

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As long as the engine temperature is normal, i would suspect a clogged heater core, the dex-cool antifreeze is notorious for building up deposits in cooling system. have heater core flushed first to see if it makes any difference

Posted on Nov 16, 2008

  • autodr
    autodr Nov 16, 2008

    there are 2 rubber hoses probably side by side on firewall inside engine compartment on pass. side. however is the easiest way to disconnect the hoses to flush out one way then the other. you want to separate the heater core from the eingine to make it easier. a pressure washer works well.

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There is not enough antifreeze in the radiatar. while the engine is cool and on level ground take off the radiatar cap and start the engine. let it run for 15 to 30 min. after the engine starts to get to operating temp. start adding antifreeze keeping the level at the top of the radiatar. it may over spill but what you are doing is getting all the air out of the system. this should take care of the heating problem. i forgot to mention. you want to keep your heating on high during this process.

Posted on Feb 27, 2009

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1 Answer

Heater blows cool warm air idiot light says it is hot


Engine temperature is too hot. Better not run it till you find the problem, or you may need new head gaskets. Try changing thermostats, flush and refill with correct mixture antifreeze and water. If still overheating, get it to a shop for diagnosing.

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To troubleshoot this types of problem,click the link below :---
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This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

What should i do when the hot air doesn't work


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Jan 21, 2012 | 1998 Oldsmobile Silhouette

2 Answers

My temp gauge goes up to the hot but doesn't overheat but blows cold air then the gauge will drop to bout half n then start blowin hot air replaced thermostat n a new rad cap could it be the heat sensor


No, because it blows cold air when it gets hot. There is air in the system or the coolant is low. Intake manifold gaskets are a very common problem on these engines and if left unattended to can cause even bigger problems such as head gaskets if the engine over heats too much. Check the coolant level and if it is low, look for leaks at the water pump, radiator and especially the intake manifold where it meets the head. Also, pull the oil dip stick an/or the oil cap to see if it looks milky. If it does, there is coolant getting into the oil.

Apr 08, 2011 | 1997 Oldsmobile Silhouette

1 Answer

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check coolant level in radiator and coolant bottle sounds like it may be low on coolant

Feb 09, 2010 | 1998 Oldsmobile Silhouette

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