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Heater doesn't work on 89 nissan sentra. fan works but no heat

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

chiquititas
  • 1010 Answers

SOURCE: 1996 nissan sentra

Find the big hose that comes out of the top of the radiator and follow it to the engine and that is where the thermostat is located. My advice is to be sure to get a factory thermostat and rubber gasket as it makes installation much easier. I have done it both ways and the factory one is easier to install.

Posted on Jun 29, 2008

  • 59 Answers

SOURCE: The air conditioning,the blower fan

One suggestion. Have you checked the fuses ?

I would check the AC or blower fuse to start with. If you have the drivers manual it will show you where the fuse box is. Typically there are at least two boxes to check. One in the Engine compartment and one in the passenger cabin.

Look inside the lid of the fuse box to see which fuse may apply to the AC circuits or the blower and check to see if they are blow. the metal link between the two posts that plug in. If the link is missing you need to replace the fuse with one of the same rating. Make sure you know where you took the fuse out from and put it back in the same slot if its good. Check all the main fuses if possible to see if any have blown and replace if they have.

Posted on Aug 12, 2008

RALilja
  • 381 Answers

SOURCE: over heating. no heat from heater

Hello,
You need to replace the Thermostat and gasket very quickly as you are damaging the engine when it overheats. Your thermostat is not opening at all preventing the coolant from reaching the engine, cooling it off and sending the now heated coolant into the heater core to keep you warm. The shaking may or may not go away once this is fixed.

Good Luck!
Rich Lilja

Posted on Dec 02, 2008

  • 1 Answer

SOURCE: 2003 Nissan Sentra Problem overheating and heater doesn't work.

I had this exact problem a few weeks ago. The repair shop first changed the thermostat. Didn't fix the problem. Next step, they found the radiator was clogged. They replaced the radiator and now everything works fine.

Posted on Mar 23, 2009

  • 5 Answers

SOURCE: 97 Nissan Altima AC/heater fan only works on highest setting

Sounds like the blower resistor module needs to be replaced. Could also be the switch.

Posted on Nov 06, 2009

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Maybe your radiator is clogged.

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There is probably a bad wire to the fan or a fuse has blown. use test light and probe wires with key on and see if power, BE CAREFUL FAN CAN COME ON WHEN KEY IS IN ON POSITON. Is car over heating? it usually has to get really hot for the fan to work. try letting car run while in park and watch for fan to activate. Good Luck

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What causes heat not to work in 1989 sentra? the thermostat was replaced and so were fuses


will try to help. is your radiator full and has been winterized? as far as,has it had antifreeze put into radiator? low coolant in radiator is#1 problem for no heat. you've replaced the thermostat, so that's new. good thing. no leaks?is the heater fan blowing? when you turn the heat up,do you hear something in the dash moving? or do you feel resistance in the slider[the red zone] when turning the heater on,on the dash? if not, the acuator,or heater control valve on the dash may be bad. if the heater fan;s not coming on, are you sure you checked all fuses?even the one's under the hood in the black box? hope this helps and thank you for choosing fixya.com if you need further assistance,please repost your question and an expert will be happy to assist!

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My 1995 Nissan Sentra heater fan only worked on high, so I replaced the blower motor resister and now it only works on the first 3 settings. Any idea why?


did you install the right resistor, or the resistor is defective, many problems with aftermarket resistors, try a dealer resistor.

Jan 20, 2010 | 1995 Nissan Sentra

1 Answer

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This sounds like the thermostat needs replacing as long as the radiator has the proper coolant level. If your vehicle has a temperature guage watch it to see if it is at normal operating temperature after the warm up period. If the temperature goes up and down or doesn't reach what is the normal temperature that is the problem. Normally a bad thermostat will stay open which causes the engine temperature to be much cooler than normal thus no heat.

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You need to replace the blower motor resister.

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4 Answers

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does the car overheat at idle or travelling down the road? if the thermostat was not changed, thats first step. checking it is replacing it. possibly air-bound. then i would suspect a headgasket problem.

Sep 30, 2008 | 2003 Nissan Sentra

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