AndyADD

Im on my cell phone so i cant circle it but its the part thay has black square and three hoses coming off of it. There is black line where the crack was and sprayed anti freeze. Its on 1989 jeep cherokee laredo inline 6.

XJwonders

That's heater control valve. U don't need it. Ditch it and run two straight hoses from the core to the thermostat housing and water pump. U ll be glad u did it

Dumajones

^^^^ what he said.. here is a vid on how to fix that.

AndyADD

Could i kust put a T connector in there and be done with it?

XJwonders

no

RTorrez1

Just fallow the video and you will be done with it and not have to worry about it breaking on you again. Just don't forget to plug off the vacuum hose. While you are under the hood get rid of that fram filter, they are garbage! Replace it with either a Mopar, Napa Gold or a Wix brand filter.

CCKen

And...get rid of that Fram filter and use a Wix or Napa Gold filter.

Oswalla

OR.... you can buy the part and fix it. Unless you like that extra heat on your feet in the summer. Eliminate it and your heater core always has hot coolant flowing, thats why its there.

cruiser54

WRONG!!!!

If that were the case, would this guy in Arizona remove them from every one he works on, including his wife's?

HCV Removal



The heat is controlled by the blend air door. I've eliminated at least 10 of them here in Arizona and my AC always works perfectly.

Actual field experience has proven time and time again, by numerous different people, that there is NO downside to eliminating the HCV..

It flat works. Period.

The other benefits are keeping coolant flowing versus being stagnant in the heater core and the dangers/disastrous results of having a valve fail unexpectedly whether you're poking around the engine bay or driving down the highway or trail.

Thanks to djb383 for this:

One thing you may want to consider is removing/eliminating the heater control valve, if you haven't already. '96 down have the HCV, '97 up the Factory eliminated it.

During the warm months, with a HCV, (temp lever/**** never moved off cold) coolant sits and stagnates inside the heater core.....There's no fresh coolant/corrosion protection circulation through the heater core.

With the HCV removed/eliminated, coolant/corrosion protection flows through the heater core constantly when the motor is running, regardless of where the temp lever/**** is set.

Also, you don't have to remember to turn/slide the heat lever/**** when flushing/re-filling the cooling system because coolant is flowing to/through the heater core when the motor is running and the HCV is absent.

Be sure to plug/cap the small vacuum hose when eliminating the HCV.

sycoglitch

Wonder why Chrysler ditched them, hmmm. Im happy my 01 doesn't have it. I never have unnecessary heat on my feet. Ditch it OP

XJwonders

agreed. I don't feel the extra heat blasting on my feet during summer. You won't even notice it at all.

DONT replace the valve, because the same problem will happen again later. What if it happens again when u are 200 miles away from home and stores?

Dumajones

Had mine go on the 95 years ago, did the bypass, all is good. I also don't have a lot of heat on my feet.

sycoglitch

Oswalla

325,000 miles, I've replaced 1 hcv total and have the original heater core as well. Must not be all that bad.

In those hotter climates it would be beneficial to eliminate for the extra cooling capacity. Oldest trick in the book for an overheating situation is to open hcv, used it a few times myself to make it home.

XJwonders

I wouldn't risk putting a part that's prone to breaking on my jeep. It's all matter of when, not if it ll break