Overheated
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,229
Likes: 643
From: Orange County Ca
Success, hopefully.
I could feel that the bottom of the overflow tank was wet, so I pulled it out. A little bit of a pita (I had to remove the top part of the fuse box, which is always a little scary), and I replaced the O ring on the quick disconnect fitting on the bottom. I did find, as others have said above, that the O ring wasn't a standard size, so I used the closest I could find.
It appears to be working well.
So, what did I learn.
The coolant temp sensor seems to be working well.
The fan seems to be working well.
There are no other leaks.
My best guess is that the overflow tank fitting was leaking a little bit and that the coolant was pooling on a flat plastic filler piece below it, so it didn't leave a puddle on the ground. Then would evaporate because of engine heat.
Why did the cap on the overflow cap fly off and break into 2 pieces?
Low coolant and steam pressure????
I could feel that the bottom of the overflow tank was wet, so I pulled it out. A little bit of a pita (I had to remove the top part of the fuse box, which is always a little scary), and I replaced the O ring on the quick disconnect fitting on the bottom. I did find, as others have said above, that the O ring wasn't a standard size, so I used the closest I could find.
It appears to be working well.
So, what did I learn.
The coolant temp sensor seems to be working well.
The fan seems to be working well.
There are no other leaks.
My best guess is that the overflow tank fitting was leaking a little bit and that the coolant was pooling on a flat plastic filler piece below it, so it didn't leave a puddle on the ground. Then would evaporate because of engine heat.
Why did the cap on the overflow cap fly off and break into 2 pieces?
Low coolant and steam pressure????
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,229
Likes: 643
From: Orange County Ca
Well, not fixed.
I did 3 heat cycles--start cold, bring up to normal temp (230 per the dash), oil temp 200+, idle for 5-10 minutes, shut off, repeat. Not a drip one. I did do a exhaust gas in the coolant tank test, and it came out negative. I drove 8 miles to a gas station, and the coolant was gushing out of the overflow tank. The cap stayed on and was working correctly. The fan was on. After shopping for about a hour, the car had cooled down somewhat and I started it up and added about 1/2 gallon of water. The water immediately started bubbling/squirting out of the tank with extreme velocity.
I'll change the stat as it's the easiest/cheapest part to change, but what's next?
Water pump? It's not leaking and turns freely, so how to check if it's working well?
I did 3 heat cycles--start cold, bring up to normal temp (230 per the dash), oil temp 200+, idle for 5-10 minutes, shut off, repeat. Not a drip one. I did do a exhaust gas in the coolant tank test, and it came out negative. I drove 8 miles to a gas station, and the coolant was gushing out of the overflow tank. The cap stayed on and was working correctly. The fan was on. After shopping for about a hour, the car had cooled down somewhat and I started it up and added about 1/2 gallon of water. The water immediately started bubbling/squirting out of the tank with extreme velocity.
I'll change the stat as it's the easiest/cheapest part to change, but what's next?
Water pump? It's not leaking and turns freely, so how to check if it's working well?
Last edited by Sayfoo; Today at 06:38 PM.
