Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-99848-1piqdcijs:136:3912)
    at m.mountComponent (/tmp/execjs20161208-99848-1piqdcijs:47:15602)
    at /tmp/execjs20161208-99848-1piqdcijs:49:31860
    at a.r.perform (/tmp/execjs20161208-99848-1piqdcijs:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-99848-1piqdcijs:49:31821)
    at r (/tmp/execjs20161208-99848-1piqdcijs:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-99848-1piqdcijs:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-99848-1piqdcijs:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-99848-1piqdcijs:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-99848-1piqdcijs:173:8

Q: Coolant leak from a black box (HVAC box)?

asked by on

Hi my name is ray. I need advise on 78 mark 5. it has coolant leak between the black box(HVAC box)and the fire wall. I didn't open the box yet but it starts leak when I turn on the heater so I just guessing it is heater core or the piping concerned. I just want to stop the leak so I'm planning to by pass the piping. It will cause only no heater? If it is leaking form the heater core, It will solve the problem?

A: The most likely cause of your leak is the h...

The most likely cause of your leak is the heater core inside of the car's heater case. The leak will come out of the A/C's drain. If you are going to bypass the heater core then I would recommend connecting the two hoses together or just running a new hose from one pipe to the other pipe on the engine. This will ensure the coolant circulates through the water pump and cooling system well. The heater core can be replaced at any time in the future. If you need some assistance with this, consider YourMechanic, as one of our mobile technicians can come to you to diagnose the coolant leak and help you install a new heater hose to ensure good coolant circulation.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Differential ratio

You should not mix different axle ratios or there may be damage to the components in the 4x4 system. If front drive shaft and rear drive shaft turn at different speeds then damage inside transfer case gears can happen. Most...

Q: Car cranking, but not starting

Hello, there can be many different causes for this issue. If someone has messed with the mixture screw on the carburetor and have set them too much in the wrong direction, it can cause issues with the car idle. A...

Q: Air conditioner

You need to take it to a different mechanic to have a diagnosis. You either leaked out the refrigerant or the system was overcharged. Have the pressures checked. The sealer will not seal a leak in an evaporator or a...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.