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Old 05-30-2010, 09:35 AM   #1
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Exclamation Weird collant leak...

ok i am puzzled... i have a 99 9-3 and got it early spring when it was cold... the car ran great... Its got 130k now on it and i have changed the thermostat and the water pump but yet i still have a strange issue... Ok if i shut the heat off and its above 70 out when i shut the car off it sounds like i have a tire leak and the collant system drains the whole collant res. tank.... but not till i shut it off... if i keep the heat on it leaks a lil here and there but not all the time... why would it do this??? the leak seems to be coming from bottom right hand side of the radiator but i cant see it clearly.... any sug. would be greatly apreciated.... Oh the car has never gotten hot as far as the temp gauge reads.... about half way is the highest i have ever seen it.... please help.... Thanks in advance...
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Old 05-30-2010, 10:24 AM   #2
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Lower radiator hose would be the first thing I would check. There could be a crack or the clamp is loose. When the engine is hot/running the hose will expand and pinch at a different angle than when it is not pressurized. It would be around the area you describe.
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Old 05-31-2010, 05:42 AM   #3
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any one got a diagram of the hoses that go into the radiator?? that would help.... i dont think its the main hose but there looks like a small fitting that goes in the bottom of the radiator on the lower right side.... and looking through the bumper i can see a small drip in that area..... What is the fitting??? and where is the over flow located on the 9-3??? i cant find it any wheres... the one on the tank goes to the top of the radiator
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Old 05-31-2010, 05:56 AM   #4
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The drain plug is on the driver side in the corner, maybe it's leaking. Did you use the drain plug to drain the coolant for the water pump?

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Old 05-31-2010, 06:18 AM   #5
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You might wanna pay a mech to do a dye and pressure test. That should narrow the issue down.
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Old 05-31-2010, 06:25 AM   #6
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Question

no i didnt drain it to do the water pump... and its def. on the pass side... and at the side of the radiator not the back near the hose.... but it looks like there is a fitting on the side where it is leaking but i dont see it in the diagram...where does the overflow or pressure release come out?? on that note... i have noticed that my fan comes on for only a few seconds and shuts off... i have never seen it come one for any amount of time... is this normal??
I REALLY appreciate all the help....

Tweek... I really hate to pay... lol i have very limited money and i have no mech. around that can acomidate my time needs... i leave for work at 5 am and work till 6pm... i drive 130 miles round trip to work each day... so i really need the car... my other car is a 240sx but it needs an inspection and wont pass... so i am sort of stuck fixing it myself on the weekends....

Last edited by assassin_chad_23; 05-31-2010 at 06:30 AM.
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