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I am working on a 97 Buick Lesabre the problem is not much
Sent to Car Experts February 11 05:38 PM

I am working on a 97 Buick Lesabre the problem is not much heat comming out any were when your going down the road it gets fairly warm but when you stop it turns cold. I have put in new head gaskets thermostat and flush the radiator and heater core. upper heater core hose gets warm when idling but lower dosent. guage comes up in temp and fans kick on, so I still think it must be dew to heater core but it flushes through nice and fast. and by the way it has a 3800 series II eng. I have also switched the heater hoses around but didnt make much dif.

 

Optional Information:
1997 Buick Lesabre 3800

Already Tried:
thermostat, head gaskets, flush heater core and radiator,water pump seems fine

Customer (name blocked for privacy)
Status:  Closed   Value: $9
Answer
February 11 5:50 PM (12 minutes later)
         
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February 11 5:53 PM (3 minutes and 19 seconds later)
         
has a new belt and tensioner but does seem a little bit loose but it doesn't slip
Customer (name blocked for privacy)
Info Request
February 11 5:57 PM (3 minutes and 26 seconds later)
         

OK

This is a tough one. Just for the fact you have replaced and really inspected everything over. At normal speed it seems to be working or circulating the coolant correct. When you flushed the coolant did you Bleed all the air out? On your upper radiator hose do you have a small bleeder valve?

 

Thanks.
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February 11 6:01 PM (4 minutes and 38 seconds later)
         
Yep bleed it out , the valve is on top of the thermostat housing then i jacked up the corner of the car that the cap is on so that was by far the highest part of the cooling systen and left it open wile running and no bubbles came out ever and i did this for more than an hour. I also replaced the cap.
Customer (name blocked for privacy)
Info Request
February 11 6:05 PM (4 minutes and 11 seconds later)
         

OK

Well you have it together. I know overtime the impellers in the water pump get weak. Something tells me it is the pump or the belt. One other thing is the car overheating at all?

Thanks.

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February 11 6:12 PM (6 minutes and 28 seconds later)
         
never at all stays 195 to 180 always after it is warmed up.
Customer (name blocked for privacy)
Info Request
February 11 6:19 PM (7 minutes and 19 seconds later)
         

OK

What I can do is re-post your question for Another expert? They might have another idea of what may be going on.(Do not know when another expert will be able to contact you)

Thanks.

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gmplus -- Mechanic100% Positive Feedback on 874 Car Accepts
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February 11 6:22 PM (2 minutes and 29 seconds later)
         
thank you
Customer (name blocked for privacy)
Answer
February 11 6:41 PM (18 minutes and 58 seconds later)
         
ACCEPTEDCheck Mark
Hello Tool man, you may still have a problem with the heater core having a build up of sludge coating the inside of the core. To clean this out, I have filled the core with white vinegar,let it sit in there an hour.Then flush both ways with a garden hose. Try to catch what comes out in a clean bucket to see if any crud come out.If you accept this answer click on GM Plus.Good luck.

I will give an honest answer to the best of my knowledge. If my answer helps, please accept,if it saves you some money a bonus is appreciated.Thanks for using Just Answer, Jerry
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Roadside Jerry -- Auto Mechanic100% Positive Feedback on 793 Car Accepts
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February 11 7:22 PM (41 minutes and 30 seconds later)
         
I filled it with carb cleaner twice and once with brake cleaner then flushed both ways with water after each and water flowed through real good and clean.Do you know if there is a blend door that could open a little at idle then go back closed when reved up?
Customer (name blocked for privacy)
Answer
February 11 7:49 PM (27 minutes and 4 seconds later)
         
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February 12 2:44 AM (6 hours and 54 minutes and 28 seconds later)
         
The orfice? Do you mean the tube that the heater hose conects to on the heater core?
Can I also get the top vac. diagram recent to me with the shot taken a little lower?
But I also think this one I am working on is the electronic one. It has all push buttons except the fan switch wich is a slide lever.
Do you have a diagram for the electronic one?
It has a pink hose comming in the car that hooks to the others behind the glove box, but those just change the doors from defrost to vent and to floor heat.
Customer (name blocked for privacy)
Answer
February 12 11:07 AM (8 hours and 23 minutes and 21 seconds later)
         
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February 13 8:30 PM (1 day and 9 hours later)
         
Now I got the drivers side always blowing hot but when you let it idle the pass. side blows cool.and temp guage varys about 50 degrees when driving.
But it is good enough the customer say's it is good enough,so thanks.
Customer (name blocked for privacy)
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