I have a 2005 Relay and it's been running hot. The gauge is normally at 50% but fluxuates between 50 and 75%. It has not overheated. The cooling fan has been kicking in, but after long drives, the coolant in the reservoir is bubbling/boiling. When I had checked the fluid levels I saw the hose connected to the reservoir was loose, but has since been tightened, so I am thinking an air bubble? Thanks.
Yeah that is very possible the most common cause is because there isn't enough coolant in the radiator. If your radiator has a cap directly on it take it off and make sure the radiator is filled to the top of the neck with coolant. If the radiator does not you can remove the upper radiator hose and use a funnel to fill the radiator completely. If the temp gauge goes over 50% ever it's safe to assume you have a cooling issue. I hope getting your radiator properly filled with coolant fixes the issue. If not check for leaks in the water pump hoses etc. Check the thermostat.
SOURCE: 98 Saturn Sl2 overheat
If it overheated without being low on coolant the first time you may have a themostat sticking. But I would start with a check of all the hoses for cracks or loose clamps. Also check leakage at the front of the motor from the water pump. It's hidden behind the a/c compressor but you should see splash marks on the hood if it's leaking there. For good info on how to fix it yourself try www.saturnfans.com. There are a lot of good tech tip articles for the S series cars. I lost a water pump pulley at about 90,000 overheated five times getting home. The car now has 230,000 on it and still going strong.
SOURCE: my daughter's 1997 Saturn is leaking coolant and overheating..
Coolant leaks can occur anywhere in the
cooling system. Nine out of ten times, coolant leaks are easy to find
because the coolant can be seen dripping, spraying, seeping or bubbling
from the leaky component. So open the hood and visually inspect the
engine and cooling system for any sign of liquid leaking from the
engine, radiator or hoses. The color of the coolant may be green,
orange or yellow depending on the type of antifreeze in the system. The
most common places where coolant may be leaking are:Water pump. A bead shaft seal will
allow coolant to dribble out of the vent hole just under the water pump
pulley shaft. If the water pump is a two-piece unit with a backing
plate, the gasket between the housing and back cover may be leaking.
The gasket or o-ring that seals the pump to the engine front cover on
cover-mounted water pumps can also leak coolant. Look for stains,
discoloration or liquid coolant on the outside of the water pump or
engine.Radiator. Radiators can develop
leaks around upper or loser hose connections as a result of vibration.
The seams where the core is mated to the end tanks is another place
where leaks frequently develop, as is the area where the cooling tubes
in the core are connected or soldered to the core headers. The core
itself is also vulnerable to stone damage. But a major factor in many
radiator leaks is internal corrosion that eats away from the inside
out. That's why regular coolant flushes and replacing the antifreeze is
so important.
oses. Cracks, pinholes or splits
in a radiator hose or heater hose will leak coolant. A hose leak will
usually send a stream of hot coolant spraying out of the hose. A
corroded hose connection or a loose or damaged hose clamp may also
allow coolant to leak from the end of a hose. Sometimes the leak may
only occur once the hose gets hot and the pinhole or crack opens up.
Freeze plugs
(casting plugs or expansion plugs in the sides of the engine block
and/or cylinder head). The flat steel plugs corroded from the inside
out, and eventually eat through allowing coolant to leak from the
engine. The plugs may be hard to see because they are behind the
exhaust manifold, engine mount or other engine accessories. On V6 and
V8 blocks, the plugs are most easily inspected from underneath the
vehicle.
Heater Core.
The heater core is located inside the heating ventilation and air
conditioning (HVAC) unit under the dash. It is out of sight so you
can�t see a leak directly. But if the heater core is leaking (or a
hose connection to the heater core is leaking), coolant will be seeping
out of the bottom of the HVAC unit and dripping on the carpet. Look for
stains or wet spots on the bottom of the plastic HVAC case, or on the
passenger side floor.
Intake Manifold gasket. The
gasket that seals the intake manifold to the cylinder heads may leak
and allow coolant to enter the intake port, crankcase or dribble down
the outside of the engine. Some engines such as General Motors 3.1L and
3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for
leaky intake manifold gaskets. The intake manifold gaskets on these
engines are plastic and often fail at 30,000 to 80,000 miles. Other
troublesome applications include the intake manifold gaskets on Buick
3800 V6 and Ford 4.0L V6 engines.
INTERNAL COOLANT LEAKS
There are the worst kind of
coolant leaks for two reasons. One is that they are impossible to see
because they are hidden inside the engine. The other is that internal
coolant leaks can be very expensive to repair.
visit for more info:
http://www.aa1car.com/library/coolant_leaks.htm
SOURCE: air conditioner not blowing cold air. We put
Is the air actually blowing into the car?But it's just hot?It sounds like your blower motor is not turning to blow air.you have a fuse,check the switch that controls the blower,and the blower motor it self.
SOURCE: have 2004 saturn ion. coolant light stays on all
LOW LEVEL COOLANT SENSOR BAD OR EITHER WIRE CONNECTOR TO SENSOR IS LOOSE OR HAS A SHORT IN IT.
336 views
Usually answered in minutes!
×