Question about Hyundai Motor 2002 Sonata

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Replacing the thermostat on my Hyundai elantra 2002

We have no heat, the temp guage doesn't move

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  • brenda_ronan Jan 18, 2009

    no gauge doesn't come up at all. not sure about the rad

  • Mike Butler
    Mike Butler May 11, 2010

    When car running for a while and you carefully touch top of rad, does it feel hot, or cool? Is the temperature gauge moving at all, as in creeping up from cold mark at all? Have you looked in rad when engine cool, to see if any coolant visible?

  • Mike Butler
    Mike Butler May 11, 2010

    If your temp gauge isn't coming up to operating temperature, and no heat, that's a good place to start. gauge doesn't move up at all? Does rad feel hot, or just warm/cool when running?

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  • Expert
  • 67 Answers

Could be low coolant

Posted on Jul 24, 2009

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Posted on Jan 02, 2017

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maklean
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SOURCE: thermostat in a 1997 hyundai elantra

See exploded view
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REMOVAL
1. Drain the coolant down to thermostat level or below. 2. Remove the coolant outlet fitting and gasket. 3. Remove the thermostat

Posted on Jun 23, 2008

motor1258
  • 6674 Answers

SOURCE: 2002 caravan, heater problems

That was a common complaint a few years back, due to the fact that the heater core is a little too much higher than the engine, which requires that extra push it gets when engine RPM's increase. One thing I did do on my Caravan was remove my hoses to the heater core, and use a small external pump with hoses to circulate C.L.R. through my core for a while, then let it sit with CLR in the core overnight.Next day I circulated it through again, both ways by reversing hoses, and then re-attached hoses, bled air out of system, and notice quite an improvement in heat at idle. Once cleaned out, the heater core allowed coolant flow through it better at idle. If your stumped by explanation, take it to an automotive shop, or a Rad shop, and get a quote on flushing that core out for you. I recommend the CLR, but it might be too time consuming for you , but a flush will probably show some noticeable improvement.

Posted on Nov 23, 2008

mrgreenz
  • 962 Answers

SOURCE: No heat in Hyundai Sonata 2002

Check for an OBII code. have it scanned for free at an autoparts store. it is not the thermostat since you have already replaced it 3 times.Check for the temperature control sensor during scanning..

Posted on Dec 27, 2008

  • 32 Answers

SOURCE: hyundai elantra 2002 over heated stopped running

The head gasket is probably bad. unplug the coil pack and remove the spark plugs and turn key to start, if its leaking coolant will shoot out of spark plug holes, seen it a lot.

Posted on May 06, 2009

SOURCE: Elantra's thermostat

dear friend:please look were the engine and gearbox joins together there is a housing were the radiator hose fits from the radiator,remove that housing and you will find the thermostat,

Posted on Sep 23, 2009

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