Question about 1995 Buick Skylark

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Need to find heater hose to shut off heater flow

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There are two heater hoses,that go into the firewall into the car,just use a valve to put inline to shut the flow off,ether,or both is better,you will find them,besides the ac lines,they are the only ones going into the firewall.If this was at all helpful,please rate thank you.

Posted on Aug 21, 2010

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There are two small rubber hoses going to the firewall, those are the heater hoses.

Posted on Aug 21, 2010

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Posted on Jan 02, 2017

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SOURCE: Poor coolant flow through heater core. Heater core

on some GMC models there is a valve that opens when you turn on the heat inside. It is called a heater control / actuator valve, it works off engine vacuum thru hoses connected under the dash, and going to the top of the valve. Now junk and crud and old rust will get in the valve and restrict it's flow. You will have to pull the valve off and clean it, but it is best to replace it, seeing it is hard to get all the junk out of it.
It looks like a L shape pipe with a hose on top & bottom, black plastic,and a smaller line on top mounted close to the wheel well about even with the exhaust manifold on the pass side. Drain the coolant, remove the valve and see if this is the cause, lots of gunk in the one hose. It is not real hard not real easy to replace this valve. Now if your truck does not have this valve check the pipe that the hose hooks to on top of the engine, remove the hose and see if a small screw driver will go down inside or if it is stopped up. .

Posted on Dec 07, 2009

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1 Answer

My heater hose connects to the heater core inlet via a plastic connector,is this connector needed or can I connect the heater hose directly to heater core inlet


You need the part, it is either a flow restrictor valve or a shut off valve. If the part is a restrictor then you can rupture the heater by leaving it out.

Dec 14, 2016 | Cars & Trucks

1 Answer

How do i bypass the heater core on my 2001 gmc jimmy?


Check the heater hose sizes. Buy a connector to put the hoses together and hose clamps. Cut the hoses, insert the connector, and tighten the clamps.

If you just want to stop the coolant flow, go to any parts house and buy either a heater hose shut off valve (cut the hose, insert the valve, and install hose clamps) or buy an external hose shutoff that clamps the hose shut stopping flow.

Jul 10, 2014 | GMC Jimmy Cars & Trucks

1 Answer

Heater blows little heat


If my information doesn't answer your question I would ask, please provide year, make, and model. The first thing that I would check is the coolant level (radiator needs to be full). Check that the coolant is reaching normal running temperature (that will be between 200-210 deg.s). Check related coolant hoses to the heater core. Check hoses for defects (a clogged or pinched hose will restrict flow). Check coolant flow valve (shut off valve), at operating temperature test both coolant hoses and see if the temperature going in is slightly hotter than the temperature of the coolant going away (if the two temperatures are very different then the heater core could be clogged? I hope that helps, please let me know. Good luck.

Mar 01, 2014 | Chevrolet Cars & Trucks

1 Answer

Bad coolant w/ leaks from many places, overheated and shut off, heater doesnt blow heat anymore


After the engine has reached normal operating temperature, feel both heater hoses going into the firewall. Are both hot? If both are hot, it's probably the door or doors in the heater case not operating from the selector knob on the dash. If only one hose is hot, the coolant is not circulating through the heater core. Look for a water valve in the hoses that is shut. If no valve, crack open the cold line to see if you can start circulation through the core. If neither hose is hot, pull off the inlet to the heater core (it may come from the cylinder head area) and run the engine and check stream flow. It won't spurt out like a garden hose, it should flow out in a smooth even stream, maybe just enough pressure to push a steady stream. If no flow comes out, coolant is low, or there is a circulation problem in the engine, like a kinked hose, a weak water pump...
Does the radiator cap hold pressure in the cooling system?

Feb 08, 2014 | Cars & Trucks

2 Answers

I have no Heat in my 2000 Ford Taurus!


If the heater core bypass refers to the water flow to the heater core, I would wonder why you did not flush the heater core as part of the system. You can drain water from engine, disconnect heater hoses and add a short hose to the heater and force a garden hose to flush the core.

I have not looked up the particulars for which heater system is on your car. Some just use duct-work to close off air flow through the heater core and the heater core always has hot water in it. Others will use a valve to shut off the water flow through the heater core and they can be either electric or vacuum operated. Combination systems are the third system which controls water flow and duct air flow at the same time.

Some of the Premium Climate control systems with Electronic displays have a computer diagnostic system which self-diagnoses problems but you need the sequence codes and explanation of where the bad part is located.

Aug 08, 2017 | 2000 Ford Taurus

1 Answer

Does the heater hose have any valves that need to open and close?


There is no actaul valve in the heater hoses that shuts off the hot coolant flow, this is done by moving a door to block the heater core air flow, it is called the blend door.

Feb 23, 2011 | 2002 Ford Escort

2 Answers

My in heater in a 2007 grand prix doesnt work the air blows but isnt hot temperture gauge looks fine an have changed out thermostat


You have a plugged up heater core. Try pulling the heater hoses of where they go into the firewall, put a garden hose with a spray nozzle in one hose and gently flush the system out. you will need to pull both heater hoses off to do this.

Feb 11, 2011 | 2007 Pontiac Grand Prix GXP Sedan

1 Answer

Will not get warm at all already had trouble with fan on 5


if the engine is hot and no heat to cabin then heater core or shut valve is plugged feel the hoses going to the heater at firewall if one hose is hot then coolant isnt flowing to heater if both are hot then problem with vent flaps are not openeing heat door to allow air to flow over the core try that first

Jan 10, 2011 | 2003 Chevrolet Silverado 1500

2 Answers

Heater only blows Very luke warm air on low speeds. when the speed is increased to 3-5 the heat goes away and it only blows cold air. Any suggestions


Read all of these instructions before starting this job.
First test your heater core for flow by disconnecting both heater core hoses from motor and forcing air from an air compressor into one of them watching for flow from the other. If you have no flow then you may need to backflush your heater core - it is possible you have blockage in it. Your local auto parts store has a backflush kit you can buy that will have a backflush valve ( to be added to your supply heater core hose ) and an additive to put in your coolant system. The kit will not include new coolant so you will need to get that too. Install valve and connect a garden hose.Run motor specified time in the kit. Remove lower hose from your radiator and turn on the water from the hose full blast. Watch the coolant coming out from your radiator to see if any chunky stuff comes out - also watch for the color of the flow. Run water until it comes out clear, then shut off water and disconnect garden hose. Allow system to drain, reconnect radiator hose and cap flush valve. Refill coolant system, turn heat on high and run motor until it is warm. Top off coolant in radiator ( be careful - the pressure may cause coolant to spray out when you remove cap - put a rag over the cap before you remove slowly). If you do not have warm air at this point you may have a bubble in the heater core and may need to block rear wheels then raise the front of the vehicle until the radiator cap is higher than the heater core. Restart vehicle and turn heater on high . Check coolant level in radiator and top off, then cap radiator and shut off motor. Lower vehicle and start again with heater on high. If you still have no heat then your heater core may be plugged. To check, remove both heater hoses from motor and force air from an air compressor into one of the hoses, watching for flow from the other hose - if no flow then core is plugged and needs to be replaced, but if you have flow then you still have an air bubble in the system and need to purge using the above steps until you have heat.
Hope this helps and please rate my solution - good luck!!

Nov 29, 2010 | 2001 Chevrolet Silverado

2 Answers

The van temp is fine but the heater blows cold air


Make sure your heater hoses are there and hooked up. Make sure there is water flowing through the heater core.
Make sure the actuator is actually turning the heater on
and - under the hood too - make sure there is no 'heater hose shut off' that is either off or failing.

Good luck

Jan 28, 2010 | 1997 Chevrolet Astro

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