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Heater blowing cold engine gets hot

Tiny
DSPANO99
  • MEMBER
  • 1994 PLYMOUTH GRAND VOYAGER
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Engine gets hot but heater will not blow hot air.
Thursday, October 11th, 2018 AT 3:09 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi and thanks for using 2CarPros.com.

First, check to make sure it isn't low on coolant. The is the most common reason heaters don't work and engines get hot. Take a look through this link, specifically number 8.

https://www.2carpros.com/articles/how-a-car-heater-works

Let me know what you find.

Take care,
Joe
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Thursday, October 11th, 2018 AT 7:56 PM
Tiny
DSPANO99
  • MEMBER
  • 2 POSTS
I replaced the thermostat and that solved the problem. Thanks
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Monday, October 15th, 2018 AT 10:14 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Great! Let us know if you have questions in the future.

Take care,
Joe
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Monday, October 15th, 2018 AT 5:06 PM

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Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.

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