I have had the radiator hoses and the radiator replaced this year. Now my car is running hot again! What gives?? What else could it be??
2007-10-27 13:27:10 · 8 answers · asked by lmltide 1 in Cars & Transportation ➔ Maintenance & Repairs
Water Pump was replaced last year. I'm really trying not to put alot of money in this car. How much should a theromastat run on a 97 Mazda?
2007-10-27 13:33:27 · update #1
Either the thermostat isn't opening and letting the hot coolant into the radiator to cool down, or the water pump isn't making the water flow properly - it's not uncommon for the vanes to be worn off over time. Replacing the thermostat is a relatively simple job. Replacing the water pump is much more difficult - usually the timing belt is on the way and has to be removed as well (although usually it doesn't actually power the pump.)
Good luck!
2007-10-27 13:35:39 · answer #1 · answered by Me 6 · 0⤊ 0⤋
Other causes not mentioned ( depending on the car you have ) :
- If the cooling system has air in it, and is not bled properly, will cause overheating. VW's are famous for this.
- If you have a head gasket leak, you will be introducing pressure and more heat into your cooling system. If you take your radiator cap off when COOL, and you see lots of bubbles in it, it may have a leaking head gasket (have you ever overheated the car? A warped head will lose compression - have you lost power, and does the engine run rough? Does your oil get grey with white deposits on the dipstick? ).
- some cars require special coolant - have you used the correct fluid? Has it been changed, and if so, do you know its the correct fluid?
Check the cheapest item first - the Thermostat. THey do go bad, and are fairly cheap and easy to replace. ALWAYS try this item first. It can also be put in backwards, believe it or not, so you never know , even a new one could be not functioning due to a problem like that.
- The Gremlin Guy, USA -
2007-10-27 14:11:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
What type of fan does it have? If it's mechanical the fan clutch may be bad. If it's electrical the temp sensor switch which activates it could be bad. Also the radiator may be clogged with bugs and road dirt. Check and if clogging is the problem wash it out (from the engine side) with a water hose. Try squeezing the bottom radiator hose when the engine is cold. This hose is supposed to have a coiled spring in it to keep it from collapsing when the engine is reved up. Some installers don't bother making sure it's there. A lower hose collapsing will definitely cause it to overheat. If the thermostat is bad it will overheat at idle a few minutes after startup.
2007-10-27 13:54:35 · answer #3 · answered by mustanger 7 · 0⤊ 0⤋
Could be numerous things, to include your thermostat, water pump, temperature sending unit, and whatever type of coolant you are using. Bring it to firestone and have them run a pressure test on your cooling system first off, and if that shows up good, have a mechanic check your water pump. Have your timing belt replaced as well if you get the water pump done, because the timing belt turns the water pump and has to be taken off anyway.
2007-10-27 13:30:49 · answer #4 · answered by zanilth1984 4 · 0⤊ 0⤋
Is your fan/s functioning properly and is it the right size? Is your fan belt loose? Usually this will create a squealing sound.
Has the front grill on the car been modified or had a stone guard fitted. Sometimes this can obstruct airflow.
2007-10-27 13:38:23 · answer #5 · answered by Anonymous · 1⤊ 0⤋
A thermostat runs about $8.00 at autozone.
2007-10-27 14:12:41 · answer #6 · answered by chillzilla 1 · 0⤊ 0⤋
try the water pump
2007-10-27 13:30:25 · answer #7 · answered by Anonymous · 0⤊ 0⤋
thermostat
2007-10-27 13:30:24 · answer #8 · answered by Zach 4 · 1⤊ 0⤋