is it normal for the rad. fan to come on like every 4-6 mins? .. cuz mine was doing that this one nite .. and im always having to refill my coolant everytime i go on a trip .. hr and half away and back and my coolant is low .. car be overheating sometimes and i jus fill it up and it goes back down .. is it my thermostat? .. any info would be great .. thx in advance ..

 

is the car leaking coolant or is it disappearing? any other symptoms?

 

You should have shut the car off the instant you realized that it was starting to over heat. Now that it has over heated a few times the head gasket is probably toast, which would explain the loss of coolant.

 

x2

 

Replace the thermostat and radiator cap, and then bleed the cooling system.

Then go from there. Good luck.

 

top your radiator off, purge air from system using purge vent (if your car has one) then refill again. with the cap off, start the car and see if it starts over flowing.. If so, you pare pressurizing your cooling system because a bad head gasket / warped head surface.

Another way you can tell is make note of where your coolant level is in your overflow bottle.. Fill your radiator. Replace cap and beat your car for a few blocks (LoL).. check coolant level in the overflow bottle. (Just look) if the level has increased dramatically, you have blown your head gasket.

 

please choose a more descriptive thread title. there are good responses so i wont lock. ill fix title.

 

the coolant is jus disppearing ..

 

cant jus shut it off instantly when im on the freeway .. lol .. but i did do that . never let it get to the H tho ..

 

but thx for all the inputs .. ill look into it

 

well the temp went like 3 quarts of the way up almost to the H while i was on the freeway today .. so i pulled over .. shut off engine .. let it kool for a while and checked the rad .. there was still coolant in there but the resv. was almost full(it was almost half way) .. so i was thinking thermostat .. so drove home and the temp kept going up and then when i let go gas it does back down then i gas again alittle and in a bit it goes back up .. back and forth like this til i got home .. went and got a new thermosat .. threw it on .. tried your fill it and took it around the block and the overflow bottle only had a little in there .. but my fan kept coming on like every 4-6 min while i had the engin on ..

oh yea the rad didnt overflow when i had the cap open and turn on teh engine .. it jus sucked some in and i jus fill it up alittle more ..

so im guessin blown head gasket now right? ..

 

any thoughts?

 

headgasket/ warped head the pressure of the leaking headgasket ( compression of the engine forcing antifreeze into the overfill)

 

oh yea .. damn .. sucks . but we'll see if i get a new head gasket since im swappin in a B series soon ..

 

It's normal for the fan to come that often when the motor is overheating. That's not a problem at all.

Are you sure you're using correct coolant? If it's an old coolant it might lose its effectiveness and also, if you're using more water than coolant, the water might evaporate and the car will overheat.

Other than that, whatever else has been already suggested. Try a new radiator cap.