Question about Mazda Cars & Trucks
I have a over heating problem need either new radiator or thermal stack but dont know what make i need to purchase
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Posted on Jan 02, 2017
Check your coolant level and all your hoses first.
Do your radiator fans come on when the engine is hot? If not, you may need to replace the fan switch.
When the engine is hot, is the upper radiator hose also hot? If not, the thermostat is probably faulty and should be replaced. This is cheap and easy to check and replace. Remove the thermostat (at the other end of the radiator hose - you're going to have a bit of a problem with coolant unless you've drained the radiator or you've got a means of holding that hose up) and chuck it into some hot water - if the thermostat doesn't open you need a new one.
It would pay to check your engine error codes in case they can save you some time. If you're driving an American model WITH a check engine light on the dash, put a paper clip between terminal 10 and GND in your diagnostic box (right side of the engine bay near the air intake - has a big DIAGNOSTIC written on it). Then hop into your car, turn the key to ON (but don't start the engine). The light should go on steady - then off for 4 seconds. After this any diagnostic codes will be displayed. Long flashes are for the first digit in a two digit code - short flashes are the second digit. There will be a 4 second pause between each code AND the codes will repeat. If you get codes, record them and post them and I'll see what I can suggest.
Hope this helps
Posted on Dec 13, 2009
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