so im bypassing my heater core due to a leak.

theres two hoses on the firewall for it.
the top hose goes through something and goes to the motor.
the bottom hose is the inlet hose for the antifreeze and comes from under the intake manifold to the firewall



i was told to take the top hose(after it goes thourgh whatever it goes through) and to attach it to the firewall side of the bottom hose.

my top hose was long enough to reach the outlet for the bottom hose under the intake manifold. so i attached it..

my car is still overheating due to a lack of antifreeze.


is there something im missing here?

 

any help guys?

 

Have you tried filling it back up?

 

1. Loop the cooling hoses on the engine: Coolant outlet under the intake manifold goes to the coolant inlet by the front of the engine, near the front radiator hose. One of your existing heater hoses should work for this.

2. Connect the inlet and outlet on the firewall with a hose. That thing that the hose goes through is the valve that controls flow to the heater core. You can either keep it there and run a hose from that to the other one on the firewall, or remove it and just connect the 2 parts on the firewall.

Step 1 is the only one necessary for your car to run right. Step 2 just keeps what's left of the coolant in your heater core from leaking out.

3. Once you're done, refill at radiator and make sure to bleed all the air from the system. Even a system that is full of coolant can overheat if you have air bubbles in it.

 

I did this last year also due to a leak (heater core pipes were crushed when I was dropping my engine back in).

There is a long hose from the engine head to the water valve (near the firewall). Remove that hose end from the water valve, and connect it to the port under the throttle body. Then take the hose that was connected between the heater pipe and the throttle body and loop it back around to the water valve.

Drove like that for 6 months with no problems, although it sucked on long trips at night not being able to regulate the A/C temperature at all. Then when winter started to set in it was real bad. Luckily I was able to replace my heater core over Thanksgiving weekend and got it all fixed up.

 

Yeah I'm still driving like this. The worst part is having no defrost. There have been a couple rainy Seattle evenings where it was pretty dangerous, I couldn't see a thing.

 

huh? If you have A/C your windshield defogger should still work perfectly fine. The heater core has nothing to do with removing moisture from the windshield.

 

I don't have ac so I was depending on the heater