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#1
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my 92 legacy overheating
ok so my 92 legacy ss is over heating, heres a list of symptoms and things ive done:
remember i also have a td04 swap(if that helps) -new headgaskets (heads were not warped) -runs at average temp and out of no where strikes straight to hot -put a new radiator cap on (16 lbs) -cooling fans work fine - the car over heats in about 10 minutes after reaching normal temp. but it doesnt matter whether i go really fast or really slow, the temp just spikes randomly -new thermostat -when it starts to overheat if i put it in nuetral and rev up the motor alot it instantly cools back to average temp then spikes again - temp is hot but i can put my hand on the motor and it really isnt that hot at all -the pressure is really high - no white smoke or water coming from exhaust -blurped the system many times but doesnt work - heater works good until it overheats then its cool air but when switched to a/c its hot even if the temp is really hot |
#2
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Re: my 92 legacy overheating
Weird symptoms. It could be that you have a big air pocket so the thermostat isn't opening at all. Did you try taking the top hose off and filling the engine in it?
What does it do without a cap on it at idle? No weird issues or noises with the water pump? Another thought is could the tstat have floated out of place when installing? I know the EA82 series this could happen and give similar issues.
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working. |
#3
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Re: my 92 legacy overheating
try replaceing the coolant temperutre sensor for the gauge its on the drivers side of the engine under the intake manifold.
i've heard that when they go bad the coolant temp gauge acts like a tachometer. also check for a good connection, it could just be a glitch.
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1991 xt6 eg33? 1993 gc track car |
#4
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Re: my 92 legacy overheating
the water pump was new from when i baught it, oh and the car only overheats when driving it, it will not overheat if i just idle and even rev it up..
with the cap off heres what happens: on start up coolant splashes out, then kind of swashes around for a little, and if the temp is at average little bubbles come out and the coolant will overflow slightly, then when you shut it off a big amount splashes out Last edited by cruisen_15; 10-05-2008 at 10:01 PM. |
#5
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Re: my 92 legacy overheating
Quote:
Yeah that kind of leads me to think you have air in the system
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working. |
#6
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Re: my 92 legacy overheating
get your coolant tested for hydrocarbons. I think you have a HG leak.
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Matt 15 OBW premium w/eyesight A picture of an SVX in the garage |
#7
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Re: my 92 legacy overheating
Who did the HG's?? Sounds like someone didn't follow the entire torquing procedures.
Tom |
#8
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Re: my 92 legacy overheating
guys, before we tell him to go and start replacing random parts, we need to find out the way he filled the cooling system. I have come across countless times at my shop where its as simple as not filling the cooling system correctly. Subarus are notorious for having a picky way to be filled correctly. Its easy to get air pockets in the system if not done correctly...
so I ask, how did you fill the coolant system? |
#9
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Re: my 92 legacy overheating
Very true... but I am not that optimistic.
Tom |
#10
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Re: my 92 legacy overheating
so, who wants to provide the in-depth, "First you jack the front end of the car up so it's at least a foot above horizontal" explanation of how to correctly fill the coolant system?
-Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#11
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Re: my 92 legacy overheating
Quote:
1. Pull the top hose off the radiator 2. Fill the engine though the top hose. 3. Reconnect hose to radiator 4. Remove bleeder screw. 5. Fill radiator 6. Replace bleeder screw 7. Idle the engine for 10 mins 8. Fill radiator if necessary. 9. Replace rad cap Tom |
#12
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Re: my 92 legacy overheating
Don't the Leggys have a "bleed screw" at the top of the radiator so one doesn't have to go through the "top rad hose" thing?
Glenn OOPS! Didn't read entire TomsSVX post.
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"The only thing necessary for the triumph of evil is for good men to do nothing" Aaron Burke 1993 25th Anniversary Edition #63 of 301. R.I.P. Rojo 7/24/2008 She saved my life! 1997 Ebony Mica Pearl LSI. BLACKBERRY 1998 5-Spd Legacy GT Wagon in Glacier White: NUBURU 2005 Cadillac STS in Sandstorm Metallic: STORMY Veteran and farthest traveler of 1st SoCal2MuseumsMeet2010. http://www.subaru-svx.net/photos/user.php?RojoRocket |
#13
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Re: my 92 legacy overheating
but he has a sport sedan and they have 2 tanks that you have to screw with. Not fun at all.
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Matt 15 OBW premium w/eyesight A picture of an SVX in the garage |
#14
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Re: my 92 legacy overheating
I have a 94 Legacy Touring Wagon (Turbo) with 180k miles. Ive owned know for about 40k miles, and previous owner had installed a new radiator. It has never overheated on me, but Ive just recently noticed after shutting off the car and being under the hood, I could hear a bubbling noise near the back of the engine. Wonder if I have air in the system. Hope its not a head gasket issue, I just had that with my 96 polo this summer.
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1995 POLO LSI 76K MILES SOLD |
#15
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Re: my 92 legacy overheating
where is the bleeder valve you guys talk about? i only have one radiator cap and thats on the coolant tank thats on the intake manifold,
is it possible to retourqe the head bolts if i loosen them back up? they are the 3 layer metal ones? |
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