Question about 1989 Nissan Maxima

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1989 maxima no heat in vehicle

System has been flushed, new heater core, radiator, heater control switch and control switch on the firewall, thermostat, the air has been purged from system, the vehicle reaches proper operating temp. its gets a small amount of heat when driven, I, m lost!!!!!!!!!!! maybe the impellers are bad on the water pump???????????????? the car did sit alot but only has 75K for miles

Any help?? thanks alot Jeff (with no hair left)

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  • Anonymous Mar 23, 2014

    Heater not working properly

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Put your hand on the heater hoses as close to the fire wall as possible find out if both hoses are hot.Do this when the vehicle is cold allow car to heat up with heater open and running.If both equaly hot then heater core at fault.If different check water supply to cold hose.

Posted on Oct 13, 2008

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Hi:
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Refilling the Cooling System
  • Reconnect the heater hoses to the heater core. Slide the hoses onto the inlet and outlet fittings that extend through the firewall, and tighten the hose clamps.
  • Close the petcock valve on the lower corner of the radiator by turning it clockwise.
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  • Reinstall the radiator cap onto the radiator.
  • Run the engine and visually inspect for leaks.
Good luck and take your time, keep me posted and don't forget to rate please.

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