2003 Mitsubishi Eclipse Eclipse loss of antifreeze and temp

Tiny
BRUIZBRO
  • MEMBER
  • 2003 MITSUBISHI ECLIPSE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
I have a 2003 Eclipse with not that high of mileage on the engine (70K). It keeps losing antifreeze, and I cant figure out where its leaking from. I have replaced the radiator based on a pin hole size leak it had, but on odd occasions it is missing large amounts of antifreeze anyway. There is no smoke or sign of any through the exhaust. There is at times a small puddle under the radiator after the cars temp sensor goes bezerk. I also had the thermostat replaced earlier than the radiator. The last thing I did was replace the factory hose clamps with steel band tensioning clamps. Still no luck and constantly carrying an extra jug of coolant around is getting old.
Any suggestions would be appreciated.
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Wednesday, March 25th, 2009 AT 11:24 PM

3 Replies

Tiny
DAVE H
  • EXPERT
Hello. thanks for the donation .. much appreciated ...

The first thing's you need to do are have the coolant system pressure tested ..and the cylinders compression tested ..to discover where the actual leak is !! hope this helps ..

let me know


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Thursday, March 26th, 2009 AT 6:50 AM
Tiny
BRUIZBRO
  • MEMBER
I was positive it wasn't going through the engine based on how well it ran. Here is what I found and I expect this may be the case for several that are having a hard time figuring out where the Eclipse leak is.
I jacked up the car and there was always a drop of antifreeze on the bottom of the radiator. The radiator was new, so I did not suspect it. The leak appeared around the bottom hose (why I tried new hose and clamps after the new radiator). Upon inspection, I could see a very slight sediment trail from the top-side of the bottom hose. I now suspected that the new radiator might have a leak. When I removed the radiator and inspected further, the factory compression tabs that seal the plastic radiator bottom resivoir to the cooling tubes assembly were not bent over at the bottom port. I then took a pair of vice grips and bent over 4 of 5 tabs that were possible to bend over. There has not been any leak anywhere at this point, but I expect that the others having a problem may have the same issue. It appears that as the engine heats up it initially draws in some air, then as the pressure builds, it pours out. When I would park, there would be next to zero sign of the leak other than a drop or two.
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Wednesday, April 8th, 2009 AT 7:16 PM
Tiny
DAVE H
  • EXPERT
Thank you for posting your final fix ... i'm sure this will be of interest to our other user's ...

many thanks


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Thursday, April 9th, 2009 AT 4:37 AM

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