I have a 2013 Chevy Cruze with 90000 miles. The original engine overheated and, as a result, blew the head gasket, and a "milkshake" was present throughout the system. I dropped a used engine in it. It turns on and runs great, but the radiator fan won't turn on, nor will the heat inside the car run. Is there a chance that the radiator became clogged along with the heater core from the blown head gasket? The engine also doesn't appear to be using any coolant in the reservoir, with the engine's coolant level remaining the same.
you already asked about the fan and were given advice to try:
https://carkiller.com/scottykilmer/qa/radiator-fan-not-turning-on-chevy-cruze/
Please try to keep all your troubleshooting in that topic.
nor will the heat inside the car run
what exactly do you mean "run"?
I tried all the stuff about the fan. Still not working. By not running, i mean there is air coming out of the vents but its not warm air
then yes the heater core could be plugged or have trapped air. That's easily checked by feeling the hoses with your hands. Input & output should be hot. If output (larger diameter) is not hot then water is not flowing.
... Or by running water through it with your garden hose.
I tried all the stuff about the fan. Still not working. By not running, i mean there is air coming out of the vents but its not warm air
Just for future reference, the terms "blower is not blowing hot air" is a much better term than simply "running". Did you fill the coolant properly? Raising the front of the car, above the heater core? That's the highest point in the system. If you didn't raise the car and "burp" the cooling system, it's not going to work properly. You also should've flushed everything out, individually, to ensure everything was completely out of the system, including running the heater core assembly backwards.
Yes, I bleed the system as you described. Okay, so if the heater core is clogged, that obviously wouldn't allow the coolant to flow through the system. If the coolant isn't flowing through the system, does that mean it won't flow past the sensor that tells the fan to turn on?? Not sure if that's how that works