1996 Chevy Blazer Continue heating problem

Tiny
OLEXSOVICH
  • MEMBER
  • 1996 CHEVROLET CAPRICE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 135,000 MILES
The last time I had the heater core flushed with super flush at the dealer the water pump went bad and needed changed. The heat was intense for awhile a week or so then it went back to the same problem hot - luke warm. Thats why I thought a sensor or vacume hose. The heater core is too costly to replace should I forget it or try something else. Thanks for any advice.
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Wednesday, December 17th, 2008 AT 7:12 AM

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Tiny
M_H_RITZEL
  • EXPERT
You say that when you hadit flushed the heat worked all right for a while. Had you changed the thermastat? If it is extremly cold where you are then some vehicle do not heat up enough. You can see it on most big truck that cover part of the radiator. Does the temp guage go up to normal operating tempeture. If not then change the thermastat.
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Wednesday, December 17th, 2008 AT 8:04 AM
Tiny
OLEXSOVICH
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The operating temp. Gauge goes to normal and the thermostat has been changed. It does not matter how cold it gets same problem. Thanks
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Wednesday, December 17th, 2008 AT 9:07 AM
Tiny
M_H_RITZEL
  • EXPERT
One other question had the hoses been removed when you flushed the heater core. Just thinking of a long shot that could the hoses been reconnected backwards.
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Wednesday, December 17th, 2008 AT 4:11 PM
Tiny
OLEXSOVICH
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Both hoses are on right my guy says it maybe a inner door open or shut controlled by a vaccum hose?Now the vehicle slowly heats up after 15 mi. Still luke warm. Thanks
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Wednesday, December 17th, 2008 AT 4:39 PM
Tiny
M_H_RITZEL
  • EXPERT
Ok with the system flushed and new thermastat and hoses on right. Do me a favor and check how hot the hoses get when it has been running a while. If they don't feel that warm then I would recheck the thermastat. You guy might be right as far as the temp comming out, which could be heater control. But I want to make sure you are getting enough heat going to the heater core. When you move the temp control from hot to cold is there much difference in temp not turning on the a/c In reference to a vacuum leak. There is a product that you spray on the hoses. If it finds a leak the engine rpms drop. I had seen it once some time ago. But I can not remember the name of it. They should be able to give you the name at a auto store.
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Wednesday, December 17th, 2008 AT 7:37 PM

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