Question about 1988 Nissan Pathfinder

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Heater hose that goes into a juction box under

Heater hose that goes into a juction box under the carby small to med hose can you by pass the box and jointhe hoses there is awire that goes to the box

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Yes you can, but you shouldn't since the vehicle was designed for maximum efficiency as it is. But so that you know, they are used to provide heated coolant to help heat the base of the carburetor to aid in fuel vaporization & efficiency good luck.

Posted on Jan 30, 2010

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Posted on Jan 02, 2017

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I had the same probl..em and in Oct 2012 same car!! well I searched and asked many people then looked at car myself to verify.. you go from inside, you will have to remove the entire dash, where all the wire controls are! since I am in FL the wires used in this car are becoming brittle :( guess from the heat here??!! bad cadillac for this quality of parts!! I afraid of breaking anything else opted to by pass the heater core :( the heater core location is middle of car behind firewall maybe 1 to 2 inches closer to the passenger side (bad design to get to!!) to by pass this under hood on passengers side up on fire wall you can see where the hose goes into it and where it comes out, cut both hose off here and then tye in by passing the heater core using a u shaped hose or small u brass plumbing fitting (u shape to go around a/c stuff) making sure SURE it will not leak and is air tight! (NOTE: heater will NOT work) A/C will still work. I get no dash warning, and no Codes are triggered! Cool cheap and EASY. I am a 40 something single mom and did this myself :)

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