Guys I need some help I try to do everything on my cars myself but I’m hitting a wall now. Fresh motor is in the car it recently blew so my friends and I did a swap everything was running good for a few weeks/month then started to overheat. Replaced thermostat that didn’t work, replaced radiator that didn’t work, replaced the water pump and that still didn’t work! fans seem to be working fine. I’ve already bled the system multiple times and it continues to overheat. Cold air blowing out while my settings are at 90 degrees. Any ideas I’m just trying to get my baby back on the road. I use the right coolant I can’t find any leaks either.

 

It seems like u still have air in the system.

Is the car actually overheating or are u just going off the temp gauge?

 

When I’m bleeding the system the temp spikes to the roof and last week drove it a few miles and it overheated bad and coolant was bubbling into the overflow tank. When it spikes now on jack stands while bleeding it the coolant doesn’t go into the overflow it just shows the gauge going all the way up and the engine block is pretty damn hot compared to how it should be. Going to get a no spill funnel today and praying doing it that way with help me out. But no I’m not 100% it’s truly overheating just going off the gauge but I’m scared to drive it with it like that bought the car and motor blew within a week not trying to have this one go on me so trying to dial it in before driving

 

If your heater is blowing cold air you have air trapped in the coolant system. Google search how to properly refill the coolant on newer cars, if you just pour in a bunch of coolant quickly you WILL trap air, add coolant no faster than 1 gallon per MINUTE. And that doesn't mean dump in a gallon, wait a minute. POUR SLOWLY!

Also make sure you have the purge valve open when filling.

Personally I prefer to use a coolant vacuum refill kit.