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Old 02-24-2016, 09:45 PM   #1
Tjkoch01
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2001 SC2
Default 2001 Saturn sc2 ghost coolant leak.

Hey guys! I have had my 2001 saturn sc2 1.9L I4 with DOHC since the beginning of June and I have had a coolant leak since then, at first it was good until about a month and a half after purchasing it and driving about 200 miles total I had a huge puddle under my car (water pump) I replaced the pump just recently, now in still loosing coolant but I'm not sure where from, I noticed some coolant on my Throttle cable by my air intake, I cleaned it at waited for more to show and nothing. I can definitely smell warm coolant outside of my car after it was up to temp and very rarely on the inside. Some help would be nice.

On a side note I have put maybe a total of 3 gallons of coolant in since I've got it, it is not burning coolant because the oil is clean and I can't smell burnt coolant. Any help would be nice thanks!
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Old 02-24-2016, 11:19 PM   #2
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Default Re: 2001 Saturn sc2 ghost coolant leak.

Look carefully where coolant leaves the rear side of the engine on the driver's side to feed the heater core. The outlet wears and breaks from corrosion, leaking coolant at the fitting on the engine. The other common place for leaks are the two xmission cooler lines on the driver's side of the radiator, especially the top fitting. While xmission oil doesn't leak, flexing from normal engine movement strains these fittings until coolant leaks. Radiator replacement is the only repair.
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Old 02-24-2016, 11:25 PM   #3
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Default Re: 2001 Saturn sc2 ghost coolant leak.

Welcome to the Forum!

I'd place a large sheet of cardboard under the entire area between the 2 front wheels. Start the car up and run for a while. If its not dripping onto the cardboard then it's got to be burning or mixing with the oil.

It may just be a bad pressure cap that won't hold.....they are cheap to replace from most any auto parts store.

By the way, where does your temperature gauge point to when the car is fully warmed up?

I am not sure on the Gen 3, but Gen 2 can usually develop a radiator leak, high up on the drivers side by the top inlet.
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Old 02-24-2016, 11:47 PM   #4
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Default Re: 2001 Saturn sc2 ghost coolant leak.

My temp Gauge stops just a little after the second notch, it goes from cold to about quarter of the gauge and it goes a little over that
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Old 02-25-2016, 12:19 PM   #5
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Default Re: 2001 Saturn sc2 ghost coolant leak.

It's possible that you may have a first design intake gasket as well. All 2000 model year dohc and part of 2001 model year up to a certain VIN number have the first design which was prone to leaking coolant. They seemed to leak more with the engine cold on first start up, once it warmed up it sealed better and didn't leak as much.
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Old 02-25-2016, 08:54 PM   #6
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Default Re: 2001 Saturn sc2 ghost coolant leak.

I just went through this in mine. The starter and rear of the motor had random drips on them.. I thought intake for sure. Pressure tested the system and sure enough it wasn't the intake, it was the little hose under the thermostat that runs up to the overflow tank. It was cracked under the factory clamp just from years of the clamp rusting and sitting on that hose. New hose was 13 bucks. I'd pressure test it.

Btw the whole time I had this my car never left a puddle on the ground. I just smelled coolant after the car warmed up. Now I don't and haven't had to add any.
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