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My 92 cadillac deville is driving me crazy. It is over heating and I don't have any heat. I have replaced the water pump, thermostat, and the heater core is about a year old. I turn off the car when it engine coolant light come on and heard this gurgling sound, like the car was thirsty. Water was coming out of the radiator and filling up the over flow resorvor and making it over flow. I am not loosing coolaint. Except for the fact that it is over flowing out of the resorvor. I didn't have this problem till I got the water pump put on that is what made me try a thermostat. Do you think I could have gotten a bad water pump?
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HI Marlene, I need to have a little more info like how the car ran before the waterpump was replaced and why it was replaced. Could it be that you had overheating and then the waterpump was installed to try and correct it. As for the parts...yes it is possable that you got a bad thermostat or waterpump but is the cooling fan coming on and did you have heat before the parts were changed. I have seen cylinder head bolt threads strip out in the engine block and exhibit the same symptoms like you describe. Give me some more info so I can better advise you. Bill
More Info.
Hi Bill, The car ran fine until I had the water pump put on. I had it replaced cause it was leaking not cause of over heating. Yes the cooling fan is coming on. I did have heat before I had the water pump and thermostat put on. Like I said I had none of these problems till I took it to get water pump replaced.
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Hi Marlene, In that case I would recommend having the waterpump removed and inspect the pump and inside area where the pump sits. It might be a case of the pump impeller loose on the shaft or the impeller not being close enough to the cover inside the engine. Hope they find out whats happening. Bill
Hello Bill, I am back. Well, it isn't the water pump. I have found out that my heating problem is more than likely a clogged up heater core. The hose going into the heater core is hot, the hose coming out is cold. I have had one mechanic tell me that can cause my car to over heat and one tell me it can't. Can a clogged heater core cause over heating problems in my car? If not what about the option of an air bubble in the cooling system?
AnswerHi Marlene, As far as I know a restricted heater core will never cause an engine to overheat. However an air bubble or air pocket in an engine will and some are harder to bleed air out of than others. But rest assured your engine will bleed air out without any problems. At this point if flushing just the heater core both ways doesn't get the heat flowing then you will have to replace it again and make sure that you don't put anymore seal tabs in the radiator. When they replaced the pump if they reused your old antifreeze then none should have been added. If the engine was flushed then 6 should have been used. Kind of surprised that the core plugged up after only 1 year. Usually it takes 7 or more years and depending upon how many seal tabs were added over the years. Next what I would do is remove the serpentine belt and drain the antifreeze out and remove the thermostat. Then add antifreeze back in so it is with-in 1/2" from the opening. Start and idle the engine for 2-5 minuits and see if there are any bubbles comming to the thermostat opening. If there is then you may have a stripped headbolt hole in the block, bad cylinder head gasket or a cracked head. If one gasket has to get replaced it would be a good idea to do both. Thanks for keeping me posted. Bill
