Question about Hyundai Santa Fe

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No heat but blows cold air

2005 hyundai sant fe that only blows cold air and overheats if i'm doing more than 100 km/h. Recently changed the thermostat but that did nothing. Any ideas???

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  • 72 Answers

Flush radiator, check coolant level, check heater core, check timing, and if all tests fine get a compression test to rule out head problems.

Posted on Feb 08, 2014

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6ya6ya
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Posted on Jan 02, 2017

dsacco86
  • 1077 Answers

SOURCE: AC not blowing cold air

Most likely the A/C system needs to be recharged with freon.
Most shops charge under $50 for this service.

Posted on Apr 26, 2009

  • 66 Answers

SOURCE: Truck overheat after thermostat was replaced. Blows cold heat too

Have you checked the coolant to make sure its full.Try this.Run the truck with the radiator cap off and let it warm up.When it reaches normal temps sqeeze the rubber hoses.These hose should be a little hard to squeeze.If they are the thermo and water pump are fine.

Posted on Apr 28, 2009

kirkx
  • 2019 Answers

SOURCE: 2005 jeep cherokee, no heat, just blows cold air,

Assuming the water is getting hot, (you could touch the hoses to make sure), then it is the controls, the vacuum the controls use, the vacuum servo that operates the valve, or the valve itself.
It is easiest to start with the last, because you can watch it move from the engine compartment, as someone else turns the temp switch high and low.

Posted on Feb 22, 2010

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