I replaced the thermostat and checked all the hoses it is loosing a little coolant but not much. my fans wont kick on and my heater blows cold air. when i drive the temp gauge goes from normal to hot and then drops back down.....im stumped!!!!
thanks
When bleeding the system to get the air out, you may want to turn of the heater to help get all the air out of the system.
Hi there..... there could be a number of things wrong here. 1st, when you refilled the rad and system with coolant, did you purge the system and get the air out? If not this can cause your no heat and no fan problem because you fan switch is probably not submerged in the coolant therefore not getting the proper temp. to turn on the fans. it can also cause the no heat because the coolant isn't circulating properly.
If you purged the system, then you might have a bad fan switch and thats why it's not turning your fans on. The no heat could be a clog in the heater core.
From What you described in your complaint, it sounds like you have air in the system. I would take the rad cap off and let the engine run and warm up. Allow the thermostat to open and let the coolant circulate. This should help it out.
I had the same problem and it got to the point to where the car was barely even drivable. I changed the radiator, thermostat, and water pump but to no avail. Then i finally broke down and decided to change the head gaskets and that did the trick. An easy way to determine whether or not it is a head gasket is to pull your spark plugs out and see if they are wet. If so then you need to replace your head gasket. Hope this helps
You have a blown head gasket. I'm sorry.
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i switched the relay fuse for the fans and they still didnt turn on and i bleed the cooling system and it still over heats and my heater only blows hot air when i have my rpm's up high and when its idling it blows cold air. i think that it might be my water pump isn't working but i dont no were it is located.
ya mad mazda ya tried to blled the cooling system and that didnt work and i have only been using water cause my fluids keep dissapearing and i dont have the money to keep spending on coolant
i have the same problem over heats go up and down
hey there, i have a similar problem. my 94 legend keeps overheating. i replaced the thermostat but the temp gauge reads sumthing diff. the temp needle goes all the way up to the red line and but the therm housing is at 150 F. the therm is suppose to open at 173F. and then the fans suppose to come on.. any suggestions are welcomed..
My 1994 legend is overheating and blowing out white smoke. A few weeks back i changed the pcv valve and that stopped the smoke. But, now my car is overheating and the white smoke has returned. I changed the thermostat only to find out there wasn't one to replace. And it still is overheating. I bled the system using the bleeder bolt but that didn't help. Also i'm getting different answers as for as the radiator fans are concerned, so i'll ask you. Are the fans suppose to come on only when the air is turned on, or do they come on when needed?
have you bleed the cooling system of air?
what coolant did you yous? some coolants dont mix very well and block the radiator
My 1996 toyota hiace 2rz is overheating after about an hour of driving then to keep the temp down i have to crank the heater on high Im guessing it has something to do with the thermostat but cannot locate it
Any help appreciated
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