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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-15-2005, 06:06 PM   #1
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Default magical cooling system?

ok so my radiator sprung a leak over the winter. it'* right at the top row, basically behind the hood latch. it'* a small leak - the kind that whizzes a little stream of fluid out when the car'* up to temperature.

well when the fluid got down to where it wasn't reaching the top row of the radiator anymore the leak stopped (duh). still i got the feeling that stuff was evaporating out.

i decided to leave it until the low coolant light came on to see if my theory was right, or if in fact the leak had stopped with a slightly low fluid level. it'* been over two months now, and the light hasn't come on. the car runs at the same temp (210-220 @idle) as it did before the leak. the funny thing (not funny, actually) about it is there'* no coolant left in the reservoir and when i open my radiator cap there'* no fluid in sight - dry as a bone.

how the hell is my car cooling itself? it has no coolant! at least none that i can see...
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Old 03-15-2005, 07:15 PM   #2
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well it seems that the car is just has enough coolant in the car to keep it cool. The bottle is the overflow, not the actually the coolant in the system
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Old 03-15-2005, 07:23 PM   #3
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1) Replace the Radiator before you have to replace the engine... The alluminum has pitted... There is another option, you could have that row thats leaking capped off so no fluid will pass through that tube...

2) The Temp sensor DOES NOT measure the actuall engine temp...lt measures the temperature of the coolant in the block... If there is no coolant, by the time the temp sensor measures the engine temp it may be too late... I have seen a few sensors( A plastic on the outside ) melted from the high block temps due to the lack of coolant..

3) Even though you may not have seen the coolant, there was problably just enough in the radiator to keep the engine block and heads full of coolant... Any lower can become a problem in a hurry...

Good Luck

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Old 03-15-2005, 09:28 PM   #4
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Quote:
Originally Posted by jr's3800
1) Replace the Radiator before you have to replace the engine... The alluminum has pitted... There is another option, you could have that row thats leaking capped off so no fluid will pass through that tube...
Years ago I had one of those original Chevy Nova'*. It probably had a copper radiator and the radiator sprung a pin hole size leak out the front of the radiator. I picked up a tube of those aluminum filings that you see on the counter of a parts store, dumped it into the raditor when the engine was hot, and SHAZAMM it sealed the leak. It prbably coated the entire cooling system with aluminum but the radiator never leaked again and I never had a cooling problem during those real dog days of summer. I'm not sure if you would recommend it with today'* engines. But if you want to try something cheap and easy, you might want to give this stuff a try.

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