Originally Posted by carfreak67
Weather is getting colder so more people are trying to use their heater for the first time in months.
Also, whenever you have a car where parts of the motor where coolant flows are higher than the radiator cap/recovery tank, you will develop air in the system if your recovery bottle gets low or your radiator cap leaks air.
Yes, cold weather! I've had the heater going for at least a month if not more now
So far so good with my car in terms of heater performance and air... I'll probably flush her out next year, since it'll be 2 years old in April 2007. Plus, I do a lot of mileage (35,000+ miles per year), so it's not a bad idea. I'm hoping the bleeding will go well, and that I don't introduce a problem either!
I've done coolant flushes / system purging with many cars before, and it's not fun. The air bubbles never seem to all come out, but in most cars, after a week of driving normally, the recovery bottle seems to pick up the slack and release the air. A few top ups and it's usually solved for good. But in this car, it seems as though the heater core is mounted much higher than in other cars, essentially trapping air within it. I'm thinking perhaps a back-flush starting at one of the heater hoses would do the trick, and would be less of a hassle than the stupid "jack up the front end and hope that all the air purges out" routine.