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No heat

  #1  
Old 12-06-2016, 08:12 PM
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Unhappy No heat

I own a 2008 chrysler sebring 2.7 touring and my issue is that im getting no heat. i have replaced the thermostat antifreeze and flushed the heater core. i have also verified that the blend door actuator and mode door work. and of course the blower works. im completely lost and any help would be appreciated.
 
  #2  
Old 12-06-2016, 10:14 PM
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Are the hoses going to the heater core warm/hot? Are they both the same temperature? When the heater is working properly, one should be hot, the other warm. If both are merely warm, you are not getting flow through there. Any hose can get plugged, sometimes with a flap of the hose liner that acts like a check valve.
You could have air in the system. It should work its way to the expansion tank all by itself with a few warm-up and cool-down cycles. Then you will top off the coolant.
Make sure your cowl intakes aren't plugged with leaves.
 
  #3  
Old 12-06-2016, 10:44 PM
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Ive measured the temp with a temp gun and one line read about 130 to 150 degrees and the other came to about 110. i havent thought about a flap plugging the line so ill look into that. excuse my ignorance cowl intakes? not understanding where to look. thanks for the help.
 
  #4  
Old 12-06-2016, 11:17 PM
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Could the bleeder housing be faulty and not bleeding the air properly?
 
  #5  
Old 12-07-2016, 10:20 AM
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DON'T touch the bleeder housing on top of the engine unless it's leaking, in which case replace it. There's a bleed screw on it that was used in the assembly plant to bleed air out of the system. If you try to turn that bleed screw with a wrench, you will almost certainly strip out the metal socket that is embedded in the plastic, causing a leak. It's a part that is barely adequate for a single use when the car was built. I's not some automatic bleeding system. In the assembly plant, they don't have the opportunity to put the car through several warm-up and cool-down cycles like you do, followed by topping off the coolant.

The cowl is the area in front of the windshield where the wipers are. There are intakes there to bring in outside air for the heater and A/C system.

Since you have a temp gun, measure the temp of the large hoses leading to the radiator at the same time you measure the heater hoses. The numbers you came up with seem a little low. Normal operating temperatures for the engine should probably be closer to 180 degrees or so, but that's not to say that the hoses will show that.
 
  #6  
Old 12-07-2016, 10:42 AM
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Thanks for the info. I must admit i did open that bleeder valve several times so maybe i screwed it up and need to replace it. Its not leaking or anything but the bottom fiting turns freely back and forth. Maybe replace it?
 
  #7  
Old 12-07-2016, 11:17 AM
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Keep an eye on it. A leak is likely to show up under pressure when the engine is hot. If you see white deposits begin to form after a while, that's also a sign of a leak.
 
  #8  
Old 12-07-2016, 11:30 AM
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I will keep an eye on it thanks for the help. Hopefully i can figure this out soon.
 
  #9  
Old 12-07-2016, 04:31 PM
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It could be that air is leaking IN to the system as it cools down and that you have an air pocket there at the bleed screw. That's the highest point in the system. Still, if air can leak in, then water will leak out and leave a trace.
 
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