The other morning before starting the car I noticed that the overflow tank was low. I added coolant to the "cool full" mark. I wasn't having any problems overheating (based on stock gauge) so I just went about my day. Later that day I parked it and it puked cooland out of the overflow tank. I figured I overfilled it.

Anyways when I got home I pulled the rad cap and ran the engine till the thermo. opened and I topped up the rad. again. Squeezed the upper rad hoses and added some more coolant. It ran for a good 20minutes like that and the coolant level looked stable. I added about 1/2gal. I took it for a drive and once again it pukes out of the overflow. I then repeat the process thinking I didn't burp it properly and I end up with the same result.

I put in a autometer gauge the other day and I had the temp. come up to 205F range this morning. When I shut it down it was bubbling in the overflow. I just went out to look at it after lettting it cool and the rad is about 3/4 full, overflow is full. Nothing on the ground. I started it up no problem and there was no smoke and the oil looks good too. Where is the coolant? On the road, in the engine? If that much had pourred into the engine wouldn't it smoke or make a mess of the oil?

What is going on? Could that be a bad t-stat? I'm gonna pick one up tonight and try that. I know that with my mods it's getting pretty close to maxed out but why do it keep puking out and the rad getting low? Is it just a bad burping job? I'm using 50/50 premixed...

Sorry for the long post.

 

Unless you have a filler at the highest point in the system, you'll have air in there. It's fine to have it filled to where the coolant flows into the overflow hose. This is extreme points of the heat cycle; right to the point where it spills out 'the overflow. If you don't have a leak, this is the cooling capacity of your system. Maybe an electric fan is the cure if you modded ride runs to hot.

My shyt ran hot for years untill I got a junkyard huffer; and it rocks!

 

sound like a t-stat to me, but a new fan that pulls more air and a new t-stat cant hurt either.

 

How do you fill you rad? Is there eror in my method?

What do you mean by filler at the highest point? Putting the car on a slope or extending the rad filler? I looked for a funnel that attached to the rad but the couple of shops looked at me like I was an idiot.

Thanks.

 

They sell filler necks that you can splice right into your top radiator hose. But I wouldn't worry about that. Seriously. It took me years to get there, but I did: I got a pimp electric fan that huffs like nobodys buisness. My car never ran this cool.

An easy swap is the 3.8 Taurus fan. Just get those Hayden cooler hangers that are like zip ties, and hang that thing like a champ. You'll only need to wire a relay or 2.

Here's the thread I did with my junkyard fan.
https://mustangforums.com/m_1845630/...tm.htm#1845630

 

That caravan fan looks pretty sweet! Are you running both low and high speed at the same time? (2 relays turned on by one source). Would that make it faster or slow it down? Did yout try that?

I gonna flush it this weekend, put in a new t-stat, already put on a new cap and maybe go junk yard shopping...

Even just somekind of bleed screw on the top hose would be nice.

Thanks for the replies.

 

Yeah dude, either pair alone, and it's the same slower speed. But both together, and it's huff city. I just run them together right now off' the floodlight switch. My car is an LX, so I never had FL's. I pimped the rocker switch from an 87 GT donor car. Otherwise the FL switch is a dummy switch on an LX.

 

Good call on the switch. I've got an LX too. Thanks for the help.