I need some help guys my 8 has been overheating and I already put a new thermostat My radiator is clean,the fan is working fine as well as the water pump, I replace the radiator cap already and still overheating does anyone know what else can I do or fix.

 

More info...

Mileage?
When's the last time you flushed your coolant?

 

It has around 65,000miles and I just flush the coolant like 2 weeks ago.

 

how do u know its overheating ?

seriously there are people living in hot *** places like TX/AZ and still doing ok (kinda ok)

its 102 degrees in NYC today and Im doing just fine, sure I have an Radiator thats like almost 2 times the size as stock but still.

you have an issue somewhere, and u should get someone to check it for u (cuz u dont sound like u know what to do)

 

Well I live in AZ and you are right I don't know what else to do that's why I was asking you guys for help.

 

Again.............not to sound stupid or make it sound like you are stupid.....how do you know you are overheating? What all is happenning?

 

also not to point out the obvious... but have you checked the coolant level? if you just did a flush it's possible that you have either a leak or that you didn't add in enough coolant if you didn't bleed out all the air. also curious to know how you know that the water pump is working properly..

 

Well the coolant start coming out of a line that is to a side of the radiator cap and the temp gauge goes all the way to the red line

 

How can I know if the water pump is working properly

 

eitehr the pump isnt working or the t stat is stuck closed. who changed the t-stat? where are you?

 

Check to make sure both fans are working. Also try sealing up any gaps around the radiator to make sure all the air is flowing through it.

Step 2: Call Charles R. Hill and talk to him about cooling issues. He and the BHR team are in Phoenix and have lots of experience figuring this problem out.

 

i change the thermostat and i m in az

 

You getting the red idiot light or are you seeing the temp level meter point to hot? Cause that meter is fake it's a 3 condition thing (off normal hot). Just like the oil PSI. If it's the red light it could be defective level meter (they bend). Read threads on it.

 

Where in Az? Also when you changed the fluid/ and the T-stat did you follow the mazda instructions to properly 'burp" the coolant system?

Or was it Drain, Swap t-stat, put in new coolant, and go?

 

How fast does it overheat? By that I mean if you start driving is it overheating in a few miles after a cold start.

 

Fair enough, I just wanted to be sure you just weren't filling the coolant bottle to the top and saying it was overheating because it was coming out of that hose just because it was filled up to high. Sorry, but we've seen it on this board before. I shall now go read the rest of the posts, but this means either you pump isn't working or your thermostat isn't opening!

 

Don't think he's taking about the coolant sensor. Pretty sure he means the gauge is pegged! Not good! I guess it could be air in the system after the thermostat change, but I doubt that as well. He can pull the thermostat back out and place it in a pot of boiling water and see if this cracks it open to verify. Jon316G just made a little thread on that very subject.

I guess there also could be some air in the system as someone just pointed out because he did just do a thermostat change. I'm leaning more towards water pump, but I base that on knowing very little about this particular situation.

 

COOLING SYSTEM AIR BLEEDING

After performing repairs or any time cooling system coolant is drained, the cooling system must be purged of air. Use the following procedure below to remove air from cooling system:

1. Safely elevate front of vehicle on hoist. Elevating the front end only, at a steep angle will allow air trapped in system to escape easily.
2. Temporarily remove a coolant hose to the throttle body.
3. Fill coolant system with proper mix ratio of coolant / water per work shop manual.
4. Start engine N carefully monitor coolant level, topping off as necessary.
5. When coolant begins to flow from throttle body hose, air is bled from system.
6. Carefully attach coolant hose back to throttle body pipe. **Caution, coolant may be extremly hot!
7. Verify proper coolant level N add as necessary.
8. Check system for leaks.
9. Verify repair.

I think the idea of the above procedure is that this coolant hose to the throttle body is the highest place in the system so bubbles naturally travel up there.

Personally would do a combination of this plus idling with the rad cap off.

 

agustin- you hd overheating- you changed the t-stat to see if that was the cause, and its still overheating? or you know the old tstat was bad AND its still overheating?

 

i'll ask the question... where did you get the thermostat from?

 

thats not totally true... although the temp gauge is useless, its not a 3 position stepper

 

Could be a blown coolant seal in the engine. That would cause the coolant to be pushed out the overflow and thus overheat the engine.

 

maybe the radiator, when the car is warm up go feel the radiator from side to side, and top to bottom with your hand, if you feel a cool spot that mean your radiator have a blockage.

 

I change the thermostat to see if that was the problem.