If I drive the car for about a mile the gauge climbs up to H. The overflow tank is full and antifreeze comes out the top. I have plenty of heat, I also changed the thermostat. If I sit in the drive way and let it idle it seems ok, but when I rev it up it takes about 20 min. for it to start overheating. I have checked around the head(in the front, cannot see in the back), I cannot see any leaks, and the oil does not look "milky" and I do not see any bubbles in the overflow tank also no oily film on top. I checked the radiator, the top hose is very hot , and the bottom hose is cold. The driver's side of the radiator is hot to the touch, but I can put my hand on the passenger's side. There is no radiator cap on this model, so I cannot see if the coolant is flowing properly
2007-12-27 22:48:58 · 5 answers · asked by Ted B 1 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
The fan is coming on, I have tried to bleed out the air in the system, do I do this with the heat on or off (it seems to work better with the heat off)? I do not see any white smoke coming out of the tail pipe.
2007-12-28 00:16:18 · update #1
Check these:
- thermostat in the right direction(yes it will fit backwards)
- sweet smell at tail pipe immediately after a cold start (blown headgasket)
- make sure the electric fan is working(should be running when hot at idle)
- there is a radiator cap, every car has one its just buried... follow the line coming from the overflow tank to the radiator the cap should be right there too.( some gm products they were pretty small)
2007-12-27 22:59:24 · answer #1 · answered by Archer Christifori 6 · 0⤊ 0⤋
Make sure it's really overheating....could be a bad temp sensor or dash gauge.
Could also be that the cooling system needs to be "burped" or have any air bled out.... if there's air in the system, it will overheat especially on cars with pressurized overflow jars which is what it sounds like on yours.
You could also have the system pressure tested to see if you have an internal head gasket leak which will cause an overheat situation....not always indicated by water or coolant in the oil or an externally visible leak. If the exhaust has white smoke, it shows a head gasket leak into the combustion chambers.
Finally, it may also be a plugged up radiator from your description....the bottom hose should be cooler than the top but not cold. And make sure the cooling fan turns on with a/c on or when the temp rises above normal....around 200 degrees.
2007-12-28 00:09:15 · answer #2 · answered by paul h 7 · 0⤊ 0⤋
sounds like your radiator is clogged...dont drive your car until you fix it..heating the engine up like that over and over again will only cause more damage and cost you more money. trust me, I learned this the hard way!
2007-12-28 00:10:17 · answer #3 · answered by KWilbanks 4 · 0⤊ 0⤋
If it still overheats w/o t-stat maybe the radiator is clogged
2007-12-27 22:55:39 · answer #4 · answered by shazaamazam 4 · 0⤊ 0⤋
what about the water pump ? take the thermostat out if it .if it overheats change the pump
2007-12-29 03:58:13 · answer #5 · answered by charlesdiericks@sbcglobal.net 2 · 0⤊ 0⤋