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1999 Subaru Outbacl 2.5 LTR Overheated and Running Rough
The car started up great and sounded very good. I let it idle for awhile and it stayed cold for about 5 or more minutes(i was worried). I shut the car off and turned it back on, this time it showed the temperature was starting to get warm. I was relieved thinking that at least the temp sensor is working and i let the car run for awhile. The car's temp gauge was in the middle and it was fine. Later on i took the car on a test run, it was still blowing white smoke but stopped when i wasn't giving it any gas. The car ran like a dream, it was very smooth and nice. After a few minutes driving at higher speeds it started to warm up even more and got up near the H(hot) mark. It was close to that for about 10-15 seconds before i was able to pull over and shut the car off. I waited for about 15 minutes and started the car(since i only had a few blocks to get back home) and the car was running rough and missing. Now the check engine light came on(it didn't come on until after it got hot and i turned the car back on).
I ended up pushing it back home after an attempt to get it home but it just ran rough so i pulled back over. I let it sit for about 30-45 minutes before starting it to see if it was still idling rough, and it was.
I'm gonna check the thermostat soon and also see if the water pump has been leaking. Do u think that by overheating for that time period would call the head gaskets to blow? Also there wasn't any hot air blowing when i turned the heat on. The upper radiator hose was blazing hot and the lower radiator hose(on the thermostat) was cold.
Any help is appreciated.
Thanks in advance