Question about 1999 Saturn SL

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1996 Saturn SL2 Coolant Leak

Recently my car began to lose coolant, and the light would come on. I would add water, but that would only temporarily fix the problem. About three days ago my car superheated (buried the needle in the red) and adding water did nothing. I replaced my thermostat (they come with new housings as well) and this fixed the overheating. However, my coolant is still leaking.

I have checked all the hoses, and none of them show serious signs of wear. I have tightened my clamps, everything. I notice that some coolant appears on the block (right where the top part of the thermostat connects to it), so I removed the housing and put a gel gasket on it (Ultra Black). However, I am still noticing a puddling in this area. To make matters worse, my coolant is burning on my engine, so everytime I drive it, smoke pores out of the area. I'm not entirely sure where the smoke is coming from, i'm assuming it is coming from the puddle and another area lower down (too much smoke to get a clear view, plus A/C blocks my view).

I can't figure out where the leak is, and i'm wondering if anyone has had this problem. I could probably find the problem if I went through every possibility (water pump, heating coil, etc.) but I feel that it is just a small leak causing my problem, and I don't have time to go through everything.

I suspected the heating coil, as my passenger side floor board is getting wet, but I do not smell anti-freeze in my car when I drive or use the heater), I am assuming that the rainy weather has opened a leak in my moon roof (had this problem before).

If anyone could offer a suggestion, I would greatly appreciate it!

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I have a '96 SL1. I have the same problem. I found out it was the water pump. Water pumps have "weep" holes for when they are about to die. The coolant leaks out of the hole.

Posted on Jan 27, 2009

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