crazyhouse2011

1995 Civic EX 5MT

I'm in the process of replacing all the radiator hoses in my engine, including the heater hoses and the little 3/8 hoses. The little short S-bend hose that goes from the heater control valve into the firewall (sitting behind the HCV) seems like it's gonna be a bitch to get out. Should I just remove the HCV and replace that hose? Or do I need to? And if so, could someone please give me tips or precautions because i have spent days looking for youtube videos and forums on this subject and have come up mostly empty handed. I already know the HCV ports crush easily. I just am unsure how I unhook the HCV.

crazyhouse2011

bump!!!

edwinie26

BEWARE OF YOUR HEATER CORE!! i bent mine in a swap and caused engine to overheat!

all the coolant would shoot out when it built up pressure.

my solution after this: bypass... so no more heater

TomCat39

If you are replacing the hoses, you can always cut the old ones off so as to not risk collapse of the metal tubing. A sharp razor will glide through the rubber pretty easily without a lot of pressure.

Then to put the new hoses on, you can wet the hose with water and it should slide onto the metal tubing easier than dry and the water will evaporate cleanly.

crazyhouse2011

I meant like unbolting the heater control valve, is there any precautions? Like the cable, will i have to readjust it?

TomCat39

If I recall correctly, there is an adjustment that needs to be made if you unhook the flow valve cable.

I'll dig up the page in a bit.

TomCat39

Busy with work and forgot about this. Here ya go: