Jump to content


Coolant Reservoir Leaks - Help


CARSETC
 Share

Recommended Posts

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.

Link to comment
Share on other sites


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.

Link to comment
Share on other sites

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.

Link to comment
Share on other sites

  • 2 weeks later...

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.

Link to comment
Share on other sites

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!!!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share



×
×
  • Create New...

Forums


News


Membership