Date: Thu, 17 Aug 2000 23:47:03 GMT From: "Dennis" <djmr26nopsamweb.net> Subject: running hot/antifreeze reservoir leak on 89 900T
I've owned the car a couple of weeks, and I've noticed the antifreeze level drops over the course of a couple of days (actually my wife, who's using the car). We've been watching it because the car has a tendency to run hot, which I've already posted here, with many unexpected responses. Today I found the level dropping because of a pinhole leak in the underside of the reservoir. Question 1: Is there some way of plugging this leak with something that will actually hold, or do I need to replace it? Question 2: I just visited a Saab parts website to see about getting another reservoir, and I saw water pumps for sale as well. There was a tech tip beneath the water pump item suggesting that one might need a new one if one saw a puddle of coolant under the rear of the engine area. My leak runs onto the ground in that area due to the fact that the reservoir is located there, but this got me thinking that perhaps pressure building up from a bad water pump may have caused this pinhole to begin with. Could the water pump failing cause the kind of pressure that could create a pinhole in the bottle? --- I just checked the reservoir a few minutes ago, just after the car was shut off, and the leak was visible, but slowly opening the cap and releasing the pressure caused the leak to stop, and a moment later, I couldn't even find a wet spot on the bottom of the reservoir with my finger. So I'm thinking pressure buildup, possibly from the pump, or maybe elsewhere in the system - one response to the 'running hot' post suggested a partially blocked radiator. I just don't know now - on some days it doesn't really run too high above the center of the gauge. Unfortunately, the day my mechanic looked at it was one of those days. Guess my wife will have to run to him with it running hot for him to see. Meanwhile, any suggestions welcomed, and thanks... Dennis djmr26nopsamweb.net Putnam Co NY "I'm not suffering from insanity; actually it's a lot of fun."
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