Truck is not overheating, but coolant spills out overflow bottle?
SOURCE: 2000 chevy malibu keeps overheating
hi this could be caused by a couple of things, thermostat not opening is one of the main one, fan heater switch on the radiator is another, and obviously water leak is another, the first one thermostat, can replaced relatively cheaply, for a few bucks, you could do it yourself if you have the correct tools, to find out if it is thermostat, fill water first, run motor till it starts to get hot, feel the hoses on either side of the radiator ( top and bottom hoses be careful not to burn yourself in the process) if one is very hot, and the other is warm to cold, that will be the thermostat, second, the radiator fan switch, fill water, run motor, watch temp Gage, if by the time it has reached over half way on the temp Gage and the rad fan has still not cut in then this is normally a sign the switch on the radiator is u/s and needs replacing ( check fuse for fan to and relay this will also stop fan from working ) also to check for leaks, fill water, ( try not to spill any ) then if available a large cloth or sheet under car, run engine ( making sure first the other items have been checked ) and just observe for dripping water hope this helps
SOURCE: slight overheating in traffic,goes up 2 notches
These vehicles, when equipped with the 3.1L engine are very prone to head gasket failure. A local garage should be able to preform a block check to tell wether combustion gasses are entering the coolant. Because you said the coolant pushed out the overflow this is definately where i would start. The normal operation of that vehicle is for the fans to turn on around 106 degrees celcius. If you can, take a temperature reading of the coolant to ensure they are coming on at the right temp. Other possibilities are an inefficient radiator, coolant temp switch/sensor causing inproper fan on temperature,
SOURCE: overheating and coolant leaking out
You will need to check for the fan fuses to see if they are blown. If you have a blown fuse, the fan may need replacing. The Chevy's have a trend to blow a fuse when the fan goes bad. You can undo the wiring harness at the fan, and if you know how, run 2 wires from the battery to the fan motor harness (one positive and one negative) This will tell you the state of the fan motor. if it runs wired like this and runs quiet, it is good, you have a fuse and or a relay problem, look at the fuse cover for which relay is which and which fuse is which. Good hunting..
SOURCE: My 2002 Chevy Duramax is
No, if it would have been it the engine would have badly overheated long ago. No, in your case it's almost surely the radiator - it's partially clogged with lime and the water flow isn't up to par.
You will gonna have to flush the radiator with a special cleaning solution. Finally clean by hand the spout - be especially thorough at the base - and replace the radiator cap with a brand new one.
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