CARSETC Posted August 9, 2004 Share Posted August 9, 2004 The coolant reservoir on my 92 SC400 has a hair line crack in it coming off of the level sensor. It leaks coolant. not bad, but enough so I want to fix it. Does anyone know what I can use to fix the reservoir? I have tried some plastic welds but nothing seems to hold. How much pressure should be in the reservoir tank? Any help is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
alicias Posted August 9, 2004 Share Posted August 9, 2004 I had the same problem and the previous owner had tried to repair it with silicone caulk. it seemed to be effective but it looked like crap. i bit the bullet and bought a new one from the dealer for about $250. it took 20 minutes to replace. i did it myself and i'm not a mechanic by any stretch. i also changed the switch -- i called it a sensor, too and i was corrected -- which probably wasn't necessary. supposedly there's an aftermarket reservoir made for a mustang that'll fit but i couldn't find it on the internet. Quote Link to comment Share on other sites More sharing options...
CARSETC Posted August 10, 2004 Author Share Posted August 10, 2004 Thanks, I found a new reservoir tank online for $114, sounds like pretty good deal, I will silicone it until the new part arrives. I did buy a new level sensor I have bee just using pliers to unscrew it, is that ok? I have taken it out several times as carefully as I could but don’t want to have to buy a new one. Is there a better way to remove this piece or is this ok. Thanks for your help. Quote Link to comment Share on other sites More sharing options...
alicias Posted August 18, 2004 Share Posted August 18, 2004 I was told that the antifreeze disolves silicone. if it does at least it takes awhile so you should be okay. i'd keep spare anti-freeze/water in the trunk just in case. Quote Link to comment Share on other sites More sharing options...
joedoc Posted August 19, 2004 Share Posted August 19, 2004 I tried every kind of sealant, nothing worked. I finally bit the bullet and bought a new tank for 130.00 or so. It didn't come with a new level sensor, so I got an expansion plug from the hardware store for a dollar and plugged up that hole. I don't have a sensor anymore but I haven't had any leaks. Quote Link to comment Share on other sites More sharing options...
alicias Posted August 20, 2004 Share Posted August 20, 2004 i was told that epoxy putty will work. Quote Link to comment Share on other sites More sharing options...
jimbostar Posted August 26, 2004 Share Posted August 26, 2004 I tried 2-part plastic weld and it didn't work, 2-part all purpose epoxy might have worked better, what worked for me was actually welding the plastic with a soldering iron and some filler plastic (don't try this at home :), the cracks sometimes go further than you can see them, one of mine went all the way down to the thread for the sensor, finally I got a new one and everything is great. Any type of soft plastic filler will work, just test it against a clean soldering gun (electric type) after the gun heats up to make sure it'll melt nice when using it as filler, I have digital soldering gun for electronics and I found that 550 degrees +/- 25 degrees worked best. The tank/cap holds about 13 lbs (American measurement) or 8.8 kpa (rest of the world measurement). GOOD LUCK!!! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.