July 3, 201411 yr My 2000 Subaru Outback overheats intermittently. I have had the water pump and timing belt changed. New head gaskets. Flushed radiator and cooling system (radiator is just 5 months old). New hoses, anti-freeze, plugs, air filter. Installed Subaru OEM thermostat. Oil change and filter. New main radiator cooling fan and relay. Hydrocarbon test. New coolant temperature sensor new 13lb radiator cap (from Subaru). New intake manifold gaskets. New crankshaft rear main seals. Increased engine idle speed to 800rpm. Temp gauge still goes almost all the way to the last marker before the red zone, then drops back to about 1/2. Keeps doing this while I am driving. When stopped and idling it shoots ack up to 3/4 or almost all the way. What have I missed/ HELP!!!
July 3, 201411 yr Has it been properly burped? Could be air in the system. Refill with nose up, use bleeder screw if it has one (passengers side top of rad), top off radiator after driving...etc. That's probably the issue. How long since the headgasket job and how many miles? Are the fans coming on? What brand head gaskets? Was the required Subaru Coolant Conditioner added after the work?
July 3, 201411 yr How did you increase the idle? You really shouldn't mess with the throttle body... It's supposed to idle at 700, you're going to piss off the computer if you mess with it.
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now