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3 Answers

What if you leave the heater hose outlet off your car will your car run hot

Do heater hose outlet hose need to be put it back on what if i dont do this

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3 Answers

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  • Cars & Trucks Master
  • 450 Answers

If you connect both heater hoses together, with a pc of pipe, copper, plastic, 3" long, 3/4" dia., your by passing your heater, if thats what you want, remember, its wintertime, no defrosters, no heat, unsafe dude ! hope you live in the south.

Posted on Jan 13, 2013

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  • Cars & Trucks Master
  • 44,379 Answers

If you decide that a heater is unrepaieable/unavailable or is not needed it is possible to run the vehicle without one. Select the 2 hoses that connect to the heater and simply join togeather allowing the water to flow as it would if the heater tap was on

Posted on Jan 13, 2013

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Won't run hot

The heater hose is to put hot coolant
into the heater core for cabin heat, just won't be
hot inside

You have to put the two hoses together if you
don't want to have water thru the heater core,
then they don't do anything but circulate coolant
but not inside the car

Posted on Jan 13, 2013

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Posted on Jan 02, 2017

riverotter
  • 58 Answers

SOURCE: The heater do not work in my 2001 ford expedition

sounds like your thermostat is not working (stuck closed). if the hose on top is soft after several minutes of engine running this is definitely the problem. good luck

Posted on Feb 21, 2009

  • 55 Answers

SOURCE: heater blow cold air in my 1994 Honda Accord (4

Yes clogged heater core may be the answer in your case .


Posted on Dec 11, 2009

emissionwiz
  • 76649 Answers

SOURCE: has no heat engine temp good heater hoses hot

U have a failed air temperature control electric blend door actuator, to replace this part requires the dash be removed from the car, the part is located on the outside of the heating duct about center of dash.

Posted on Feb 26, 2010

  • 42 Answers

SOURCE: HEATER Does not get hot only slightly warm

Ok. Here goes. 1. Start by making sure your thermostat is the correct one and that means the manufacturer suggested temp must be right. 2. You said the radiator is not stopped up. Good, or you should be overheating which will destroy motor. 3. Both top and bottom radiator hoses should get hot when stat opens and water pump circulates water. 4. Heater hoses can be removed and backflushed to check for circulation. 5. check inside valves for opening closing heater core. Some are mechanical and some are electronic that open and close off the heater core. 6. If your head gasket is blown or heads are warped due to excessive abuse or age of vehicle then you will have to decide to fix (not good idea on aluminum motors) or replace the motor or the car. 7. Had a relative who died of cancer and had me replace his stat two times thinking this would give him more heat in the car but the cancer is what caused his body temp to stay cold. Hope you do not have cancer.

Posted on Aug 12, 2010

  • 1796 Answers

SOURCE: I have a 2001 Ford Explorer Sport with a heater

Hi!!
If your blend door actuator (HOT - COLD) control works, you probably have a clog in the heater core. Both hoses should be almost at the same temperature, it only takes coolant a few seconds to go thru the Heater core. Remove the outlet hose of the Heater core at the engine intake, plug intake using a piece of hose squeeze shut, route the hose downward into a container placed under vehicle to collect engine coolant, turn heater all the way up and start engine for a couple of seconds. This may unplug the heater core or at least will let you know if it is clogged. If you need to do this more than twice to clear heater core, make sure the coolant is refilled.
Good Luck! Keep me posted!

Posted on Dec 13, 2010

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1 Answer

Heater core plug how to flush it grand am 1998


The core may be plugged, or it may have an air lock, or the core may be fine and the doors in the heater case may not be opening properly to pass heat.

With the engine at normal operating temperature, feel both the inlet and outlet core hoses at the firewall. If the coolant is circulating both hoses should be hot. If only one is hot, try cracking open the outlet line, with engine running, to get flow started from an air block. (The outlet line will run from the firewall to the front of engine near or at the water pump housing. The inlet for the heater comes off the top of engine from a head fitting and goes to the firewall.) If no flow results, the core may be plugged. To flush the core, take both hoses off at the firewall or off at where they fit on the engine, and put a garden hose into the outlet-flush it backwards-run until clear-let the water run to ground or use a catch can if able to. Some people use compressed air into the core instead of water flushing. Either way, you should see some sediment come out if it had any blockage. Once you get the heater core circulating, any further heater problems need to be addressed at the heater case. Make sure the temperature blend door can open and close-this door opens to let blower fan air pass across the heater core.
Good luck.

Dec 02, 2012 | Cars & Trucks

1 Answer

Finding the heater core on 2004 pontiac montana


The heater core is not usually the place to get trapped air out of the coolant system. But if you suspect an air block in the heater core. pull off the heater outlet hose loose at the engine, while the car is running. Before you start the car, loosen the hose clamp and have the hose ready to pull off. Start the car with the heater on high heat setting, then pull the hose off and watch for a slow steady stream of coolant from the hose. When you have a steady stream flow, you have no more air in the heater core. To purge any remaining air in the system, leave the radiator cap off with engine running until the car has reached normal operating temperature. Then shut off the car, top up the coolant in radiator and overflow tank, and put the radiator cap back on.

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1 Answer

2002 nissan altima heater problem


have 2002 altima,blower works no heat at idle and very little heat when accelerating.I changed carbon cabin filter,made sure little gear under dash to temp knob wasnt broken,flushed and bled system.Nothing worked so checked hoses to heater core and found inlet hose was hot,outlet hose was not.So investigated this problem and came to conclusion heater core was clogged.An easy way to check is to get car to normal running temp. put on heater and blowers at full.Go under dash on passenger side where counsel meets firewall,this is where heater core core inlet and outlet aluminum tubbing go through firewall,you will be able to feel both tubes one closest to you is outlet, so if this one is not hot and and other is your heater core is clogged.I detached both inlet and outlet hoses to heater core from water control valve.Then I blasted water with waterhose and nozzle set at jet,first through outlet hose to blow gunk out,then through inlet hose until water runs clear.Reatach hoses fill and bled system.heater works great nice and hot!

Nov 10, 2012 | 2002 Nissan Altima

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I need a heater hose routing diagram for a 1989 Chevy G30 Van with rear heat


The hoses dont matter which way you install them, they just run up the frame to the intake, and water pump outlet the water pump is the pressure side and the intake is the return, if you need any other advice just ask, and please rate or leave feedback

Jul 31, 2011 | Chevrolet G30 Cars & Trucks

1 Answer

I have an 1994 ford escourt wagon LX...i have replaced the thermostat and housing and back flushed the whole system..the air still doesnt blow hot enough air to warm the car up inside..this needs to be...


Hi hope I can help.
Go in the engine compartment on the passenger side fire wall,
you will see two 3/4 inch hoses.
run your engine up to temp
Then place your hand on the two hoses. (heater core hoses)
Both hoses should be warm.
If one is hot and the other cool your heater hose is clogged.
You can try to flush it by removing the hoses and flush it with a garden hose.
hopes this helps .and keeps your warm.
Please leave feedback thank you FixYa

Feb 09, 2011 | Ford Escort Cars & Trucks

1 Answer

My 1995 honda heater is blowing cold air.it wont blow hot.i changed the heater control valve.what am i to do.


try back flushing your heater core find the 2 hoses to the heater and start the motor let it run for a bit feel the hoses 1 should get hot and 1 should be a little cooler the 1 that gets hot is the inlet and the cooler 1 is the outlet remove them after the motor has cooled down and use a garden hose to back flush the core flush water through the outlet you dont need to use high pressure if you do there is a chance the core can crack and leak.

Dec 30, 2010 | 1995 Honda Accord

1 Answer

Where is heater control valve on 2003 dodge ram pick up


THERE IS NO HEATER CONTROL VALVE ON THE WATER HOSES. NEW HEATER CORE. INLET LINE right before heater core hot, outlet after core look warm. Burped cooling system 5 times with engine at operating temp. Installed homade burp VALVE right after heater core outlet(high part of hose). Still no heat. Removed water pump, impeller still in good shape not stripped off shaft. Removed heater core hoses flushed water thrue the connections on the block to the water pump INLET and outlet. flushed water thrue heater core and hoses. Going to put it back togeter today. Used known good gauge to check water temp for operating temp in test. 195 f

Oct 22, 2010 | 1997 Dodge Ram 1500 Club Cab

2 Answers

My truck wont blow out any hot air, just cold. i put a new radiator and thermostat in it. it is full of anti freeze


Try removing the Heater hoses from heater tubes(be careful not to break heater tubes off) then back flush heater core with garden hose(Don't use a lot of pressure). Jell from antifreeze builds up in the heater core and blocks the coolant flow. If it is easier, remove the heater hoses from the engine, that is safer. Back flush the heater from the hoses. To Back Flush (The hose coming from the water pump is the inlet)(Hose going to Manifold is outlet) Back flush outlet hose! To much water pressure may cause damage to heater core!!!! Do Not ues AIR!!!!

Sep 28, 2010 | 2001 Chevrolet S-10

1 Answer

Truck is running hot. Relaced thermasta and still runs the same. Noticed the top hose gets real hot while the bottom one doesnt. Dont get it.


The cooling water doesn't seem to making it through the radiator. Look for plugged radiator, blocked upper or lower hose, or ineffective water pump. Remove the inlet and outlet hose after draining coolant from the radiator. Hold your hand over the lower hose outlet while someone fills the radiator with cold water. When full, leave the cap off, then remove your hand from the outlet. If the core is unobstructed, the water will rush through it in a few seconds. Check the upper hose inlet--there should be no obstruction. Inspect the interior of each hose looking for collapse or other blockage. If ok, that leaves the water pump--remove it from the engine and check that the impeller turns solidly with the driving pulley. Any looseness there is grounds for replacement. Hope some of this helps!

Jun 29, 2010 | 2004 Dodge Ram 1500

2 Answers

Heater doesnt work blows cold air, replaced thermostat and flushed heater hoses appears to have no flow through heater core, but lines arent plugged on a 1995 gmc sonoma. Why is the hot air not flowing...


This is what I did to solve the exact same problem.I got a pump that you can hook to a drill that has garden hose connections on it.I made 2 hoses to pump into my heater core and hook to the pump. I bought some radiator cleaner at Auto Zone and put it in a 5 gallon pail with about 2 gallons of hot water.I pumped the cleaner from the pail into the OUTLET side of the heater core.(By going in the outlet side you are back flushing the core.) I put an old cloth over the top of the bucket and let the outcoming cleaner run onto this cloth acting as a filter for the dirt coming out of the heater core and let the pump run about 10 minutes. Believe me,A LOT!!!!!!!!!!! of dirt,rust etc. came out of my heater core. The heat now works excellent! Good luck.

Jan 05, 2010 | 1995 GMC Sonoma

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