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Th cold flow is very low while the hot is good and normal. How do I fix?

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  • Ryan Pries May 29, 2011

    Is this a kitchen faucet or bathroom?

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The first step turn off water then disconnect cold supply to faucet to see if there is obstruction in supply line Slowly open cold stop to see if there is an obstruction is in supply line if clear and water supply is good,then remove the faucet valve assembly and slowly turn on cold to flush any obstruction out.(be sure to note how it comes apart so that you can reinstall corectly) if that dosen't work it may be a bad cartridge.

Posted on Jun 14, 2011

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Posted on Jan 02, 2017

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How do fix a/c on 2003 yukon it blow cold then hot than back to cold


A few possibilities:
Stuck or inoperable Air-flow Diverter:
There are tow types of air-flow diverters: Vacuum Actuated and Slide-Cable Actuated (some will have an electric solenoid that controls a vacuum actuated type). In either case the default position of the diverter is "cold air" or closed - blocking air flow over the heater core. Sounds like it may have a vacuum actuated control - when it looses vacuum it will let the air-flow diverter swing shut blocking off air blow through the heater core resulting in "cold air" Could be a bad control/slider, bad or loose hose, or bad actuator. If you remove the blower motor assembly you will be able to see the diverter and might be able to tell the issue is.
Stuck or inoperable heater valve:
This valve controls the flow of engine coolant to/through the heater core. It is normally closed - blocking flow. This can be vacuum operated or cable controlled just like the air-flow diverter. Simple to check - in the engine compartment, to the left of the engine locate the cooling (heating) lines that go into the fire wall - locate the valve and check its operation.
Another possibility is low coolant level in your engine/radiator which may be too low to allow flow of the coolant through the heating coil, although you would likely notice that the engine was over heating/running hot.

Sep 13, 2014 | Flex A Lite 2003 GMC Yukon XL - 6.0L V8 -...

1 Answer

Maytag A282 Washer low water flow, both H&C


Your supply hoses have screens in the ends.....shut off the water supply valves, unhook the hoses and take a look at the screens....sounds like they are plugged.

Jun 01, 2013 | Plumbing

1 Answer

Low water pressure


Hi Bob,

You can determine if the tank is the problem by connecting a garden hose to the drain that is provided on most water heaters. Before doing this, be sure to shut of the electrical supply to the heater - otherwise you can damage heating elements if an electric type or waste fuel by heating an empty tank if a gas / propane fired type.

If you get a slow flow out of this drain, it means that somewhere in the cold water supply side to / in the tank - there is a problem. Inside the tank, the cold water is delivered by a "dip tube" that distributes the cold water to the bottom in the tank. Dip tubes are used in both electric and gas / propane fueled heaters. Here's a cut away view of a typical tank:



6_29_2012_9_57_32_pm.jpg

If the tube is clogged, or there is build up, scale or debris in the supply (cold water) side of the heater, flow rates will suffer. Likewise, if there is a problem with the output of the tank, it will directly affect flow as well.

If you get a good flow rate from the drain, then the issue is going to be on the hot water output side of the heater. Again, the same build up, scale, debris issues on the hot water out put pipe will cause problems with flow. Typcial tanks do not have dip tubes for the hot water side of the tank - as taking hot water from the top of the tank is most desireable and is furthest away from the cold water that rushes in to make up the hot hot water going out.

There's nothing really in the tank itself that can cause issues with flow outside of the dip tube, and piping to and from the tank.

Good luck!

Jun 29, 2012 | Water Heaters

1 Answer

Heater on 03 jeep liberty blows hot air only when motor is revved and cold air at traffic lights


oneor two things low coolant in radiator or poor flow through heater core . if motor is at normal running temp. and coolant full , then heater core needs flushed, check coolant in radiator first....

Dec 05, 2011 | 2003 Jeep Liberty

1 Answer

Water fm the cold side have very low flow. have check the hose for clog..clear. check the supply. strong. when the sector switch in the hot or hot/cold water flows but on cold low flow. unit is...


You need to replace the water inlet valve. Since you confirmed that the hot water side works fine, the cold water side is not allow a good water flow. It is a relatively easy repair. The part can be obtained a any local appliance supply house or online. To repair, disconnect the supply hoses to the machine, remove the back panel and the part is behind the panel. Hope this helps you.

Nov 08, 2010 | Whirlpool Washing Machines

1 Answer

Heater blows cold air only. Engine is at normal temp. New thermostate. Water flows though heater core.


if you put a 160 degree thermostat in it or lower it will not get hot you need at least a 190 a low temp thermostat is only good in the summer i bet that will solve your problem

Oct 26, 2009 | 1994 Cadillac DeVille

1 Answer

My heater is blowing out cold air in my 2005 impala


I can suggest three things that will normally fix this.

They are:
1. Fluid level
2. Clogged Heater Core
3. Bad Thermostat
------------------------------------------------------------------------------------

Section 1. Fluid Level
First, check the fluid level in the radiator (not the expansion/overflow tank) when the car is cold.

You will need to remove the radiator cap (push down and turn), as I say, when the car is cold so you don't get burned. If low, start the car with the cap off, turn on the heater and top off the radiator with antifreeze when cold then again after the car gets up to normal operating temperature. The thermostat will normally be open to the heater core at that time. Top off the radiator with the car running (since you have the cap off there will be no pressure build up so this is safe to do).

Recap the radiator making sure it is all the way on (push down and turn) and check your heater.

If no heat, feel the rubber hoses that go into your heater core. These are typically on the firewall and close together. Feel both hoses.

If one is hot and the other is cold, do the steps in section 2. If neither one is hot, skip to section 3.

Section 2. Clogged heater core

With one hose hot and the other cold... you have a clogged heater core (a small "radiator" inside the heater). One way to fix this is to back-flow the heater core. This can be done without removing the heater core with a garden hose. To do this, remember which heater hose is cold.

Remove both hoses that go to the heater core at the firewall, you will then have two metal pipes that come out of the firewall. Take a garden hose and force water into the "cold" water pipe. Sometimes you will need to get another hose that is slightly smaller than the pipe at an auto parts store or, cut the end off the garden hose to get some good water pressure into the heaters core from the garden hose. This will force water in the reverse direction it normally flows and blow out gunk that probably has collected inside it.

If nothing comes out (really clogged), you will need to replace the heater core or take it to a radiator shop to be cleaned and reconditioned.

You may want to flush the whole cooling system as well because that gunk came from somewhere.

Section 3. Bad thermostat

If neither heater hose is hot... you probably have a bad thermostat and this should be replaced. You can normally find this by tracing the top, large main radiator hose to where it connects to the engine block. The thermostat is normally inside where this large hose connects to the block. (make sure to use a new gasket and silicone to seal it).

Good luck and stay warm this winter! -Dan

Oct 14, 2009 | 2005 Chevrolet Impala

1 Answer

Moen Kingsley roman tub- no/slow hot water flow


sounds like you may have a little debri on hot side stem or kinked hose between valve and spout turn off water to house remove handle pull bonnet and remove stem turn water back on with stem removed see how water flow is be careful turning water on you could make a mess i am assuming the low pressure is in shower only

Apr 13, 2009 | Danze D302521 Antioch Roman Tub Faucet...

1 Answer

Bosch Tankless HW Heater...Hot water flow becomes cold then hot again during shower. Have had only Bosch plumber in area out numberous times but never fixes the problem.


You are using a low flow shower head. you probably own the 250/2400 they have activation rate of .8gpm. If your shower head is low like this, your unit will deactivate. Higher flow shower head is a fix, or pull the aerator out of the shower head you have now might help.

Sep 23, 2008 | Terminator Aquastar 125FX Tankless Water...

1 Answer

Low Cold Water Flow into Machine


the water inlet valve has to be replaced,its the part where you seen the screen ,where the hose hooks up to,theres a cylinoid that opens and closes and lets the water come in,your cylinoid is no good,but you change it as one unit,and its called water inlet valve,easy fix you can do your self,if this helps please vote me a fix ya

Jul 15, 2008 | Washing Machines

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