I have an 89 eldorado and it started overheating and running dry on antifreeze . i always have to add coolant and the heater will rarely blow warm air there is no coolant in the oil and i have replaced the radiator a year ago as well as the water pump my guess is that it is the head gasket but i could be wrong
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert who has answered 1,000 questions.
Re: overheating and heater bloing cold air
A coolent pressure test will tell you if its a head gasget or maybe aleak someware else. if its head gasget it will either fill up cyl.or go into oil pan. its posible to be intake gasget too. pressure test is in order.
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
engine running too hot.check coolant level, should be 50/50 antifreeze and water.replace thermostat and radiator pressure cap.check antifreeze level in the radiator,coolant level should be just below radiator cap, add coolant to overflow jug,should alway be at the full cold mark.empty coolant overflow jug will allow air be drawed in the coolant system causing overheating.if overheating happens when coming to a long stop.could have faulty engine coolant temperature sensor or bad coolant fan fuse or relay.
Raise the car front end as high as possible with a floor jack, fill the coolant tank to the top, run the engine until it reaches just short of overheating, shut it down and run water over the radiator, this will burp the air out. Repeat as needed. Don't let the coolant recovery tank run dry during procedure.
Sounds that you are low on coolant so low that the coolant sensor is no longer immersed in it If the coolant sensor is prevented from working, due to low levels of coolant, then the engine radiator cooling fan will not be started and overheating will result. The gurgling you hear is due to air in the system.
When the engine is cold remove the coolant reservoir cap. Set the interior heater to max temperature. Top up the reservoir to the maximum limit with water/antifreeze mix (2:1 is usual). Start the the engine. Be prepared to add more coolant mix as air is cleared from the system. When the top hose from the engine to the radiator gets warm give it plenty of squeezing to help shift any air pockets. The fan should also start at about this time. Make sure that the interior heater is blowing hot air. When the gurgling has stopped and no more coolant needs to be added to stay at the max level then replace the reservoir cap and secure it firmly. Allow the engine to reach running temperature. Check all hoses, junctions, gaskets water pump seal etc for any signs of leaks as it would be good to detect any cause for the previous loss of coolant.
I'm thinking your cooling system has air in it. If you have recently drained and refilled the radiator, then that is probably what's wrong. I'll be brief, and tell you how to get rid of the air. Put the heater control on hot, fan off. Remove radiator cap. Start engine, let it warm up. Watch the coolant level in the radiator, when the thermostat opens the coolant level will drop. Add antifreeze to bring it back up to full. It will drop again. Add more antifreeze. Continue to do this until the coolant level no longerdrops and the coolant is flowing good. Put the radiator cap back on. and see if the heater is working better.
With a COLD engine, open up the radiator cap to see if you have enough coolant. If you are low, it may still be good enough to cool the motor, but will only be able to circulate coolant through the heater circuit with high revs.
Do you have a temperature gauge or just a light? If the motor is overheating, you must be just about out of coolant as well.
If you share the cold with me in Canada, you MAY have a frozen radiator/heater if the coolant antifreeze wasn't strong enough for the winter. In that case you if you get in and drive the car it WILL likely overheat since the liquid coolant is solid or slush and can't move through the radiator to cool.
OR... maybe a cable for the heat/cool control is disconnected or you have lost vacuum control for fancier models... did you ever hear a "shhhh' when you moved the heater controls.?
Let's hope it's just low antifreeze... if you add some, make sure you maintain about a 50/50 mixture of antifreeze/water.
Hope this helps...
/denis from Canada
Start simple, check the coolant level, if it's too low, hot coolant won't reach the heater core, resulting in no heat. If the level drops further, the engine overheats. So check the level 1st, if it's ok, what does the engine temp gauge indicate? Is it running cold, normal, hot?
Did you make sure you filled the radiator up and got the overflow tank up to the correct level? Sometimes when you flush and drain the system and fill it back up air pockets can get trapped in the system. Start the jeep up with the radiator cap off and wait for the coolant to start flowing and when the air pockets make their way through they will escape and you can add more antifreeze.
Also, did you make sure you installed the thermostat so it is facing the right direction?
first find the leak and repair it. second, make sure it does not overheat again or you may also need a thermostat. Your heater will not work when coolant level drops below a certain level. since it's leaking, likely that level has been reached. After repair has been made, re-fill with 50/50 antifreeze mix, with the engine running and heater on full heat to allow air in system to escape. If while filling it begins to overheat and keeps spitting out coolant, replace the thermostat.
Many items need assessment. First what is THE COOLANT LEVEL enine running from cold start. IF LOW . Is there a coolant leak and where ? Lets say all of the previous check OK. ARE THE COOLING FANS OPERATING ? . They are , GREAT. Is it possible the cooling system ( i.e. radiator ) is clogged internally, or blocked exterior cooling fins of the radiator restricting cooling air. Hope this helps.