Ok I'm at my wits ends here. I have no idea what is causing my car to be a pain in the ass lately. Lets start from the beginning. Last summer late august ( 80-90 degrees High humidity) I was out driving around and my temp gauge jumped up to about 3/4 it seemed to be correlated with how fast I was going. 80-85 was high maybe a bit more than 3/4, 2-4 white lines below the red marks. If I slowed down to 60-70 it would drop but would still be slightly above 1/2 way. I drove on a 160 mile trip and it was very hot and muggy almost all the way temp gauge stayed about 2/3 to 3/4 up. As soon as I hit some rain and the temp dropped my gauge dropped. I attributed all that to the weather, but checked my coolant when I got home and it was a bit low so I topped it off and it was just fine from then on out. Put er in a snowbank good this winter and cracked some stuff up pretty good, new radiator was put in and new thermo all that. No issues at all all winter. Jump to NOW the past 2-3 weeks have just been a bitch with this car. I noticed my temp gauge started to climb stopped check for a leak and i saw some dripping on the lower rad hose thought it was the hose at the radiator was loose and seeping a little. Got on the highway temp dropped. Continued this way all every trip all times of day until today. I started checking coolant each night when i got home after it cooled down it started taking a little more and a little more. Just kept adding water as I don't want to be spending $12 every 4 days for a gallon of coolant. So this is whats happening now: I'll leave the house in the morning cold engine, get on the highway temp is fine all the way to work, no stop and go, (30 miles). I will get to a stoplight and temp is fine, when i start to accelerate the temp goes up. Stop again it stays, accelerate again it goes up. It will always climb to the top white mark never go above. I will get to work and check and the overflow tank is very full and around the cap is wet and my fan by the tank is wet. (Tank is filling up and overflowing) Now I can park the car for 20-30 mins and the temp gauge will be back down to 1/2. I will start driving and again, stoplight its fine upon acceleration temp goes up. NOW! i can sit at a light and rev my RPM's up to about 2k-2.5k which will start to bring the temp down, if its a long light i can do it and make the gauge return to 1/2 again. Get on the highway and temp is just fine at 40+MPH The coolant was vacuuming back in when cooling, replaced Rad cap and it vacuums back in now. I think the tank is overflowing on the first drive of the day, then creates and air pocket, the air pocket then causes the temp gauge to go up and down depending upon engine speed (not necessarily how fast im going because I can make the temp drop down sitting still) WHY IS THE COOLANT BOILING AND OVERFLOWING!!!!??? I've replaced the thermostat with a new oem one, I've flushed the coolant and radiator this week brand new coolant, ran water from the hose through the radiator for 10 mins. New radiator cap this week. No hose seems to be too worn, can't feel any collapsing from any of them. Both upper and lower are warm after driving 15 mins.
145K Waterpump was done at 95k Used an autozone block tester about a month ago and had no indication of exhaust gas in coolant/radiator
Yeah don't know what else it could be. Maybe there were no traces of exhaust gasses in the coolant when you checked because you have had to top it off so often so its basically fresh coolant?
Depends on where its leaking on the head gasket. Mine passed all the test as well, but still ended up being the head gasket. Had all the symptoms you are having right now.
Wlgt can you give me some More info on your situation? Your car info and what led up to you finding out it was the HG?
Is there smoke on startup? Sounds a lot like head gasket failure but you could have a leak somewhere.
http://www.mnsubaru.com/threads/cel-and-overheating.45136/ http://www.mnsubaru.com/threads/water-pump-going-out.44390/#post-728189
Thanks Nhibbs. Only difference is my CEL never comes on, I did just get a cylinder 2 misfire code on Wednesday, cleared it and that was that. No smoke on startup at all Curry. No white smoke .....nothing
Let's not jump to conclusions here...the point is, stop driving it until you figure out what is wrong before you do even more expensive damage.
Well...... I redid the block terser from autozone. The blue liquid turned yellow than my pee on a hungover Saturday morning! Motor pull this week... Woooooo like I didn't have anything else to do! Haha
