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Old 12-14-2010, 04:23 AM   #1 (permalink)
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Default No heat, engine temp normal

21 degrees outside this morning. Started the car and let it warm up for 15 minutes. Got in and it was ice cold but the temp gauge was in the normal range. I thought nothing of it, just figured it hadn't had time to warm up yet but after driving for 5 minutes still had ice cold air blowing from the vents. When I came to a stop at a light I noticed that the temp gauge started to rise quickly but stopped about 7/8 of the way up the gauge. Still no heat either. Everything was working great yesterday so what gives? I checked the coolant but only in the reservoir, its at the exact same level as when i bought it. Is it possible that the thermostat is stuck open? What else do I need to check?
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Old 12-14-2010, 04:37 AM   #2 (permalink)
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No water in Radiator.

Possible serious HG Leak.
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Old 12-14-2010, 04:44 AM   #3 (permalink)
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How would there be a HG leak if the coolant level has remained the same?
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Old 12-14-2010, 07:52 AM   #4 (permalink)
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How would there be a HG leak if the coolant level has remained the same?
Is the radiator full?? That's why I asked the question. Allso..no. to the stuck open thermostat. You would not have the temp gauge up that high with a stuck open T-stat.
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Old 12-14-2010, 08:05 AM   #5 (permalink)
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How would there be a HG leak if the coolant level has remained the same?
The overflow tank isn't a good indicator of how much coolant is in the cooling system. It sounds like there is definitely a leak somewhere. Check the coolant, and top off if necessary, then start to look for leaks. Check the oil for coolant contamination, and the coolant for oil contamination.
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Old 12-14-2010, 09:13 AM   #6 (permalink)
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You have very low coolant level. Since this is '98, it's most likely a head gasket.

Coolant lever in the reservoir is not necessarily a good indication - the radiator cap might be stuck, or you already had so little coolant that only air (exhaust gases) was coming out.

I wonder if you checked the level in the radiator when you bought the car? Also, check for oil contamination (milky) and or brown and/or oily sum in the coolant reservoir and radiator.

Other than that - refill, "burp" (search for it), refill again. Then you will see where the coolant is coming from.
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