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Over heating while stopped and no hot air from heater.

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
When you have a misfire and combine that with over heating and coolant lose always make it 1st to check the head gasket
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
DWONNK
  • MEMBER
  • 1 POST
  • 2002 NISSAN SENTRA
  • 4 CYL
  • FWD
  • MANUAL
  • 114,000 MILES
When I start my car the heat doesnt work unless I reach above 2500 + rpm then it will work if I set and idle for a minute or so it stops working again

i changed thermostat and flushed the system and drained the air as iit states in the manual

what next
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Coolant flowing through radiator at op. Temp? Top rad. Hose get hot and firm at idle?
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
CTIMMS
  • MEMBER
  • 1 POST
  • 1998 NISSAN SENTRA
Heater problem
1998 Nissan Sentra 6 cyl Two Wheel Drive Automatic

My heat does not work on levels 1, 2, or 3 but on 4 it blows air but doesn't get hot, it does get warm through.
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
Replace your blower motor resistor.

Check your antifreeze level. Make sure it is full, and at the right strength.
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
FSPENCER
  • MEMBER
  • 1 POST
  • 2002 NISSAN SENTRA
Heater problem
2002 Nissan Sentra 4 cyl Manual 73,000 miles

My heater gets hot only when the car is moving. When I slow down or stop the heater goes cold. What is the problem?
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
This is most commonly caused by a partially clogged radiator. Need to have cooling system / radiator flushed and refilled.
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Monday, October 22nd, 2018 AT 6:59 PM (Merged)

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