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What can I do for not having heat in the car?

Tiny
KWILSON1277
  • MEMBER
  • 1998 CHEVROLET LUMINA
  • 93,500 MILES
I have a 98 chevy lumina 3.1 engine. I have replaced the water pump, thermostat and the radiator is full, no leaks, both hoses are hot. No air in line and the blower is running. I will get heat only when the car is moving and only for about 5 minutes then it turns cold, the gauge goes all the way up and then suddenly drop give heat for 5 minutes then repeat. Any suggestions?
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Monday, October 31st, 2011 AT 1:13 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Make sure both your hoses going tothe heater are hot or similar in temp. Then check your actuators for power or vacuum. They are under dash. Generic pic enclosed.
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Monday, October 31st, 2011 AT 2:20 PM
Tiny
KWILSON1277
  • MEMBER
  • 2 POSTS
I have tried that, no problem there. I replaced the radiator cap, thinking that it was not holding pressure, still not fixed. I cannot figure this out for the life of me.
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Wednesday, November 2nd, 2011 AT 12:52 PM

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