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Old 07-13-2019, 06:47 PM   #1
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Heater removal questions

I'm searching for the valves to cut the coolant to the heaters, before I cut the lines to back heater. I found the valve in the engine compartment and found one under the bus that is connected to the heaters as well but it's coming or going from a box I can't identify. See the attached picture. Could that be a pump? Do I need to cut the electricity to it?
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Old 07-13-2019, 10:11 PM   #2
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Ok... So I'm obviously clueless about mechanic. After following more lines, that box looks more like a heat exchanger.
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Old 07-13-2019, 11:55 PM   #3
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Probably an oil to water cooler for the transmission. There should be some valves to totally isolate the heater lines. Make sure not to permanently make your front heater and defrost inoperable.

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Old 07-14-2019, 02:10 AM   #4
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Original poster said....

"should I cut the electricity to it"
So, I am going to assume it has wires going to it. I am going to guess that if you follow those wires, they go to a plug that you would plug into a wall.
If that is also true, then, what you are looking at is a heater for the engine, when the temperature is cold out side, it is used to keep the engine warm enough to get started easy.

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Old 07-14-2019, 06:59 PM   #5
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What is the reason for removing this? I kept my rear heater because you really want heat when driving in colder temps. If bypassing a heater requires more than a simple hose bypass, then leave it be.

I don't understand why so many remove the rear heaters. They provide heat and can assist in cooling the engine temps on mountain climbs.
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Old 07-14-2019, 07:27 PM   #6
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Quote:
Originally Posted by Johnny Mullet View Post

I don't understand why so many remove the rear heaters. They provide heat and can assist in cooling the engine temps on mountain climbs.

Because they take up a massive amount of buildable floor space with dual heaters and lines run. They are also pretty useless as heat when parked. So if adding heat and A/C, you can kill 2 birds with one install that is more compact and less intrusive as the heaters. While they help cool the engine, it is not needed unless you have other issues with overheating.
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