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94 legacy overheating
Posted 27 February 2004 - 01:09 PM
my 94 legacy L wagon (no turbo, 107,000 miles, automatic) has been overheating occassionally during drives in normal city traffic. when i look down, the needle is high, but not quite in the red. when i check the coolant and oil levels, both appear normal.
here is my time line:
got radiator flush & fill in fall of 2002.
1st overheating, december 2002: was close to home when i noticed temperature gague was high. drove the last few blocks til i got home. checked fluids, no problems there. took it into the shop next day ('roos only', in denver) and gague was high (not into red) only when close to the shop, so i drove it all the way in. they topped off fluids, said no problem, drove it home and for next few weeks without problem.
2nd overheating, january 2003: drove to salt lake city without incident. noticed gague was high again while driving in the city. stopped, check fluids, & i decided the coolant reservoir looked a little low, let the car cool down, added 1/2 liter of coolant directly into the radiator, then jumped out of my skin as my car burped at me. then she took another 1/2 liter. no other overheatings while there, drove back to CO, no problems.
*no problems for 1 full year*
3rd overheating, january 2004: last month when i was back in SLC. checked all fluids, didn't have another problem while there, drove home, no trouble.
since then, i've seen the needle riding high twice. it just rides high, never reaches the red. both coolant & oil are OK. last time this happened, i was in a big hurry (shame on me!) and let her drive hot, but after 5 minutes in city traffic the needle just went back down to normal. what gives??
the other 2 issues she's been having: (1) a mild smell of gas when i start up, but that disappears pretty quickly and i wasn't even the one who noticed it. (2) sometimes my heater doesn't work well & when it's on 'vent' cold air comes out despite being on 'hot'. i never noticed this before.
this site (http://autos.msn.com...px?modelid=2622) says the coolant temperature sensor might go out on 94 legacies. is that all this is? sure sounds right. should i be worried about the head gasket? is this just a cold weather problem? any other issues i should bring up with my mechanics? is it as simple as *not* going to salt lake city?
thanks very much for any input you have and please be gentle with me and sparing with the technical speak. checking coolant and oil is about all i know how to do. thanks again!
Posted 27 February 2004 - 02:04 PM
Posted 27 February 2004 - 02:40 PM
Posted 27 February 2004 - 02:45 PM
Symptoms are that of the head gasket. Could be a thermostat sticking occasionally, which would explain overheating and no heat coming out the vents.
Also, if its only happening in city driving maybe, the temp sensor controling the cooling fans.
If you have a slow leak in the coolant system, fluid could get low. On the legacys when you fill there is a plugmon the left side of the radiator that has to come out to filll top of engine. If you fill just from the cap side you could develop a bubble.
Posted 27 February 2004 - 08:57 PM
Have a shop check the coolant for exhaust gases. That will confirm the HG leak.
Good Luck. COS
Posted 27 February 2004 - 11:36 PM
I have yet to fall victim to one, but my future Subaru endeavors will increase my chances...
Posted 29 February 2004 - 01:55 AM
Stuck thermostat will not affect cabin heat.
Posted 03 March 2004 - 06:36 PM
driving down the highway i notice my heat gague creeping up. it finally got too high for me to do nothing, so i pulled over. to make a long story short, the gague would read 'HOT' whenever i started moving, though after sitting for a few minutes, would cool back down. the needle would also go up even if i just revved the engine -- not driving. after filling the radiator with all the coolant and water i had and going and stopping and achieving about 5 miles in 1 hour, i called a tow truck.
i just heard from the shop. the guy said "the radiator was low, we filled it, pressure tested it and road checked it and put a new, tighter fitting radiator cap on". could this have all been only due to a loose radiator cap? i will wait and see if this all happens over again, as it was sporadic before.
i hope (against hope) that it is all over...
ps-- to answer at least one question: i think it's a 2.2 liter engine.
Posted 03 March 2004 - 07:23 PM
I just had an issue like this in my daily driver Dodge Avenger. It would bubble and boil into the o'flow bottle because the rad cap was not holding pressure. Subarus tend to exacerbate any issue with slightly low coolant due to the 'reverse' coolant flow out the top of the radiator - making sucking a big air bubble into the engine to hang around the TB or heater core more likely - and leading possibly to localizzed overheating, causing more pressure, more coolant loss, worse problems,etc. Soob owners should watch their coolant like a hawk. If the mech. did a good job 'burping' the system I bet you're OK. Still, watch the o'flow carfully for the next few hubdred miles. Triple check it.
Posted 23 September 2004 - 10:38 AM
my NEW problem is that when ever i make a turn hard and/or with some speed i hear a rapid clunk clunk clunk noise which keeps up until i straighten the wheel out. i had this happen a while ago, and mechanic made it sound like it was because i had ripped open a front CV joint cover. well, i had that replaced, the clunking stopped, but now it's back. 1st of all, i have no idea how i ripped the cover off, but i wasn't off-roading. must be all those pot holes. 2nd, i have not been off-roading so it's odd that the noise came back, if it's because of the CV joint.
anyone else have a wierd clunking that seems to be coming from the front when you turn hard or with speed? it makes me avoid those unsafe u-turns, at least.
thanks for your input everyone!
Posted 23 September 2004 - 09:39 PM
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