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Discussion Starter · #1 ·
So, I have a 2003 eclipse GT with roughly 95k miles on it. Around 85-88k miles I got the timing belts changes and a new water pump. Right after I got it done my engine coolant seemed really empty, so I took it back and he added more coolant/water. Once again, it was very low. So I figured my heat temp. would rise, but it never did.. so I continued to drive. Now heres the thing, when I add 50/50 to almost full, i check if there is a leak, but no leaks. and when I let it dit over night, its just about empty, and when I go out and drive and check, it fills up some. but now, at 95k miles, its totally empty, even when I add coolant/water.. but my heat temp. doesn't rise at all? Should I go take it to my mechanic and see if there is something wrong with the pump? Or is this common? Thanks.

P.S. I don't know to-to much about cars lol.
 

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So, I have a 2003 eclipse GT with roughly 95k miles on it. Around 85-88k miles I got the timing belts changes and a new water pump. Right after I got it done my engine coolant seemed really empty, so I took it back and he added more coolant/water. Once again, it was very low. So I figured my heat temp. would rise, but it never did.. so I continued to drive. Now heres the thing, when I add 50/50 to almost full, i check if there is a leak, but no leaks. and when I let it dit over night, its just about empty, and when I go out and drive and check, it fills up some. but now, at 95k miles, its totally empty, even when I add coolant/water.. but my heat temp. doesn't rise at all? Should I go take it to my mechanic and see if there is something wrong with the pump? Or is this common? Thanks.

P.S. I don't know to-to much about cars lol.
Are you talking about the radiator overflow tank?
That is supposed to move back and forth. It uses it on its own, and reuses it. Don't add anything to it.
 

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Discussion Starter · #3 ·
<a href="http://s93.photobucket.com/albums/l51/mdlhale/?action=view&current=v6engine.jpg" target="_blank"><img src="http://i93.photobucket.com/albums/l51/mdlhale/v6engine.jpg" border="0" alt="Photobucket"></a>

So is that suppose to be empty all the time? And I shouldn't add anything?
 

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no, it should remain at the full hot and full cold marks when hot or cold. you have a leak somewhere, pressure test the cooling system.

do you get any heat from the vents at all? you say the temp gauge does not move at all?
 

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Discussion Starter · #5 ·
I'm thinking maybe a leak, but my temp gauge stays in the middle, never over heats. Even when I didnt add any in months. Maybe i'm not adding it in correctly? Oh and I do get heat from the vents.
 

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coolant leak, leaking under pressure. i see this often, but i coudnt tell you where its leaking from. however common places to check are around the hose ends and along the radiator seams.
 

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Also depends on the mechanic. Are your hoses brittle? do you have them on secure? KEEP COOLANT IN IT. If it does overheat on you it may very well cost you a good chunk to recover from. Take it easy and get this fixed. There is only one timing belt. Water pump might not have a good seal on it either. Hopefully the shop would fix that for you. Good luck and keep us posted.
 

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I agree with all the above, definitely keep a check on it. glad to see you're checking your temp gauge, if it ever gets too hot, shut it down and get it towed. Cheaper to fix a cooling problem than replace an engine.

On another car, I had a disappearing coolant problem too. One day I popped the hood after driving to do an oil change- and saw a small cloud of steam. One of my heater hoses was resting on an exhaust manifold, which caused a small pinhole leak in the hose. There was a tiny spray out of the hose that sprayed onto the hot exhaust manifold and evaporated (so no leaks/drips on the ground). When the car cooled down the leak stopped.

All that to say, after you drive somewhere, shut the car down, pop the hood, and look for steam escaping.
 

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My car did the same to me just yesterday. Over heated while at slow speed and cooled back down when driving. anybody have a VERY common solution???
 

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My car did the same to me just yesterday. Over heated while at slow speed and cooled back down when driving. anybody have a VERY common solution???
Either radiator fans are not working or your coolant is low
 

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I'm surprised the OP doesn't smell any coolant, especially after sitting at a light and then taking off.

Refer to the How Tos to see how to properly burp the cooling system. "Losing" coolant could just mean the air in the system is making its way to the radiator and in turn, as the air contracts on cool-down the coolant replaces the volume of low-density, hot air. If the system is sucking coolant from the reservoir, I doubt it's a leak because it would likely just suck air through the leak instead of coolant from the reservoir.

On the flip side, a leak is likely to make the water/coolant boil (less pressure) and bubble into the reservoir. I would follow burping procedures and like Bitter said, pressure test.

That's been my experience anyway. Hope this helps.
 
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