Overheating help!!!!!

[pearl97lsc]

I just changed my thermostat today, thinkin that was the reason causing it to overheat. It was not even putting out hot air out of my heater, only cold. Then the thermostat opened the other day when i was driving it and the temp went down and i had hot air so i thought it was my thermostat. But i changed the thermostat today and it does the same thing. The fan is running so it shouldnt be that. Could it be possible that the fan is shutting off while i drive? Im thinking that its the water pump.. WHat do you guys think? any info is appreciated thanks

 

[NoLimit95]

How did you refill the cooling system after the thermostat swap?

 

[ProjectRedMark]

Ok guys tell me have I been here long enough now to give the standard LVC answer to questions like this?

 

[LaserSVT]

Burp the system. Its all under the search function.

 

[mikemark8]

It is an idiosyncrasy of this car, it is very important HOW you fill the cooling system when it has been serviced. If there is air in the system it will act like your description. After filling from the overflow tank, you need to remove the crossover tube cap and 'top off' there-maybe a few times. Some here swear by putting the front end up in the air to do this, and I personally just wait until it's cool, remove the cap and top off there, it's all good. Your fan will only run when the temp gets to about 212 degrees (unless the AC is on) and it shuts off at 200. The gauge should run in the 'NORMAL' range, mine runs near the 'L and A' cool weather, and as high as the 'R and O' when it's hot out, that's with a 160 thermostat.

The water pump is about as easy to replace as the alternator (super simple) so if you have doubts AFTER being certain it is NOT the thermostat or air in the system, have at it. There is a wealth of knowledge on here, search kinda works if you have time to look. Some of the old timers here are dicks about it, but most people will help out as long as you are not pathetic-ask away.

 

[pearl97lsc]

After the thermostat change i started the car and ran it with the cap off. Filled it up that way 50/50 mix.

 

[chicken]

After the thermostat change i started the car and ran it with the cap off. Filled it up that way 50/50 mix.

theres your problem.....look under the hood there should be a sticker telling how to properly fill the system

 

[lincolnboy]

theres your problem.....look under the hood there should be a sticker telling how to properly fill the system

X2. Made that mistake before seeing the sticker inside the engine compartment. That was years ago as a newbie.

 

[Sapperfire]

Some cars don't have all the stickers anymore, but once you top it off at the resevoir, take the 3/8 drive cap out of the crossover tube and add coolant there until it stands at the brim and no bubbles comming out, replace caps

 

[GMAN]

Be nice to these new guys. It's way easier to answer the question than to sarcastically play that search crap. The answer don't always come up, and I'm sure he was in panic mode when he saw that needle rise. Pearl97lsc, get some penetrating spray and spray down that cap on that crossover tube. I use Liquid Wrench. Let the penetrating fluid work itself in for about 10 minutes, and then use a 1/4" ratchet to remove it.

Start the car, turn on the heat, and add coolant to the crossover tube. You'll see the coolant moving across the tube. The air will escape through the top. Just keep adding until the level of the coolant is flowing like a stream. (A tip: put some vaseline on the threads of the coolant cap, and it wont seize up on the tube.

 

[Jeffintampa]

I would also make sure your radiator is clean Take a garden hose and spray it out make sure you get good flow though it

 

[marco]

Just keep adding until the level of the coolant is flowing like a stream.

Not to high jack his thread, but how deep would be a stream? I'm in the process of changing my radiator, and needed to know the same thing.

 

[GMAN]

Not to high jack his thread, but how deep would be a stream? I'm in the process of changing my radiator, and needed to know the same thing.

It's not an exact science. You'll know. I would say that the flow would be about 1/4th to 1/3rd.

 

[marco]

It's not an exact science. You'll know. I would say that the flow would be about 1/4th to 1/3rd.

That sucks! I had it filled correctly then! But had to take the radiatior back out because it was leaking.

 

[Go Fast Get Tickets]

Be nice to these new guys. It's way easier to answer the question than to sarcastically play that search crap. The answer don't always come up, and I'm sure he was in panic mode when he saw that needle rise. Pearl97lsc, get some penetrating spray and spray down that cap on that crossover tube. I use Liquid Wrench. Let the penetrating fluid work itself in for about 10 minutes, and then use a 1/4" ratchet to remove it.

Start the car, turn on the heat, and add coolant to the crossover tube. You'll see the coolant moving across the tube. The air will escape through the top. Just keep adding until the level of the coolant is flowing like a stream. (A tip: put some vaseline on the threads of the coolant cap, and it wont seize up on the tube.

One thing I don't see - after removing crossover cap, remove reservoir cap, add coolant until reservoir is full, replace cap on reservoir, and continue with above steps.