Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Thats why i said the rad cap as they are spring loaded,n if stuck or to strong they will not open n allow steam or excess coolant to flow into resivour,if you loosen it you should here or see it pushing fluid out or see the steam
I agree with R/T go with a good authenic mopar company n do this once,it sounds like your trying to get it back to original, so buying the matching parts will save a lot of head aches
The laser gun temp check is a good idea to see if there is hot spots on block n heads,n use it to check temp of coolant entering rad n exiting rad n note the difference,it should be a noticable difference,try using a house hold fan in front of rad to simulate moving air will driving,if this...
Dont know if i missed it from reading every ones suggestions,but have you tried leaving the thermostate out n letting it run to check circulation n flow n to see if your fan is doing its job to cool the continues flow of coolant.
As stated you owned the car for a few years n than the over heating problem started,so you took the old rad out n tried to replace it with a BE COOL UNIT,the old rad core was probally just wore out n as long as the tanks were in good shape the rad shop would have no problem recoreing it,n you...
save yourself a lot of money if that rad shop is good,if you have the proper mopar tanks they will clean them up to looking like new so the solder will stick n than paint it with a special rad paint n it will look like stock,rad paint is rad paint n solder is solder.
This is what your up against,if you have installed that rad n run it on your car the rust n calicum build up is through the whole system.You will need a complete flush witch the rad shop should do,n than have them either flush it if its in good condition or recore it.Thats a damn good price for...
Sounds like you need a vent in your garage if possible,dont know how big your work space is but check into a high volume bathroom fan n vent it out the roof or your soffit
If everything is working as it should the air will bleed of thru the overflow tube attached to the rad and if you over fill the system it will push the excess out there also
Here's a couple pics of what I think you need with part #, I have two here one nos n a used one from a 68 charger a/c box, this pod will fit 66-70 units