Have a cooling system pressure test done to check for leaks. have a compression test done to check for head gasket or cracked head. Have a flow test done on the radiator to check for blocked cores. Have a pressure test done on the gearbox to test for proper adjustment of bands and clutches.. Run fault codes to see if any sensors/servos have failed.
SOURCE: My 99 Jeep cherokee laredo keeps overheating
the reason it getting hot when stopped is the fan relay is out thus not turning the cooling fan on,this is a time consuming job,the relay is located on the passenger side tip of the frame behind the headlight,the grill,headlights,bumper,and tip of the front fender has to be loosened up to get to it.
The relay is about 70.00 or so,the engine cools down when you drive as you are forcing air through the radiator to cool it down,as for the heater issue probably caused by boiling the anti freeze out ,
To make sure the engine is ok do a compression check to verify the headgasket and heads are ok,as for smelling the sweet smell which is antifreeze probably due to overheating and pushing the fluid out of the cap or tank.
SOURCE: 1991 Lincoln Town car overheating
The year of the vehicle, rusty liquid, and overheating, says your radiator could use a replacement. If it was your water pump, you would have liquid coming out of the water pump itself.
SOURCE: overheating and boiling in the overflow reserve tank
replace radiator cap system depends on good pressure to keep from overheating
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
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