Car heater blowing out cold air

oulu

My zafira is blowing out cold air , just wondering if it could have anything to do with water which I put into the car, the car temperture gauge on the dash board gets high after about a week so I keep the water topped up every week, if not car over heats,

old boy

see your mechanic asap

Avns1s

oulu wrote:

My zafira is blowing out cold air , just wondering if it could have anything to do with water which I put into the car, the car temperture gauge on the dash board gets high after about a week so I keep the water topped up every week, if not car over heats,

Sounds like the thermostat, or maybe an air lock. Curious as to where the water the water is going as it needs a refill. See your mechanic unless you know something about changing the thermostat.

Pherekydes

If the water is disappearing then it's not the thermostat. One possibility is a blown head gasket. There could also be a leak anywhere in the coolant system.

When you say you add water, I'm hoping it's not H2O you are adding, i.e. pure water. You should only add engine coolant or a mixture of water and coolant, particularly in winter.

crosstownk

Slow coach wrote:

If the water is disappearing then it's not the thermostat. One possibility is a blown head gasket. There could also be a leak anywhere in the coolant system.

When you say you add water, I'm hoping it's not H2O you are adding, i.e. pure water. You should only add engine coolant or a mixture of water and coolant, particularly in winter.

Yep - it could be as bad as a blown head gasket.

Coolant should be circulating in an engine all year - not just in winter. In winter coolant has anti-freeze properties, but it also protects against corrosion - this is why it should be circulating all year long, with possibly a reduced concentration in summer.