Okay well I wanted to really test the new cooling system an it overheated on me and I tacked it. I think some damage happened. I got it towed. Never overheated at idle or slow speed. I might have had the switch in comfort mode. Anyway the pressure bottle was ballooning and coolant eventually came out of it. This is why I will be getting a macsradiator one soon. The heater was working fine for a while then it was blowing cold air while overheating. Steam was coming out of the top driver side by the fuel rail. First time I saw that since first overheated on me when I bought it. The coolant was new and looked rusty but I saw no oil in it. Cross your fingers here and hope I didn't do too much damage. I have some ideas on what it could be but damn was Ia dissapointed. Any ideas???

 

Wow... no one has an idea?

 

You said you looked in the radiator and saw no oil in it. Did you look in the valve cover to see if you had any water in there? The reason you probably had no heat was because you lost all of you coolant. If no coolant is going through the heater core you will not have heat. I hope that you didn't blow the head gasket or even worst. I'll have my fingers crossed for you.
Good Luck!

 

Thank you for that. Yea the thing is even though it was overheating there was still coolant in the system. I already drained and flushed all coolant out once since then. I will check it anyway. Thanks again.

 

Ok I checked it got scared because I thought I saw water/coolant but it must be synthetic oil in the valve cover. I have not changed the oil so it has what PO had in still. I plan on changing it out. I dipped a white ziptie in there and it was not watery and seemed good. My question is now should there be any oil there or should it all drain to the pan? Seems really thin too and I had added one qt of thicker oil just when I bought it because it was low.

 

For the dummy (me) what does "tacked it" mean and what is your definition of "new cooling system"?

 

I have a thread on here with everything I did. Trust me the cooling system is new. Hoses tstat and housing radiator water pump pressure bottle the works. The fan clutch looks new so I didn't replace it. I tacked it meaning past red zone.

 

"never overheated at idle or slow speed".......so what were the driving conditions when it overheated?

 

A few things...
1) you probably have an air bubble in your system- need to burp it
2) you might have blown your headgasket if steam was coming from the block
3) if your pressure bottle ballooned it points even more towards headgasket- you normally dont have that.much pressure.in a closed loop system

 

Yea...it was 81F at night even rained.

 

Your right might still have had air in the system.

I hope not.

I have heard of this happening to the bottle.

It never sounded like crap while overheating.
Didn't really lose compression either.

Cross your fingers during the week I will find out more.

 

A simple compression test on all cylinders will usually tell the story if there is a blown head gasket.

Never a bad idea and even if there isn't a problem, the compression test is a good "snapshot in time" of the internal condition.

Spec for the 4.0 is 120-150 psi, with no more than a 30 psi variation between cylinders. Low compression on two adjacent cylinders indicates a blown head gasket.

 

Yea I will do that. I just wish I did it before I drove it and overheated it.