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Generally the coolant goes in the bottom of the heater core and out the top only because the coolant makes less noise this way if there happens to be trapped air in the system, otherwise it doesn't matter.

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Where is the thermostat location on a 6 cylinder ford PU?

The thermostat for a 6 cylinder Ford pickup is in the top radiator hose inlet. The hose and inlet need to be removed to install the thermostat..


Why doesn't the heater in my Ford Ranger put out warm air.?

check the fluid level in the tank or radiator. Check the top radiator hose when the car is warming up, is it hot? If not it might just be your thermostat that needs to be replaced. Or it could be that your heater core is plugged up. You don't say how old a car this is in, some times you can take off the heater hoses and connect a garden hose to it and back flush it and get some of the junk out of it, just don't turn the hose all the way or out can blow a hole in the heater core, then you have a mess. If you are not handy, you can go to some place that power flushes the cooling system and that may fix it also. Just hope you don't have to get a new heater core as they are a pain to put in in most cars and costs a lot to have some else do it. The core doesn't cost much but the labor is a lot.


How do you replace a heater core on 1986 Trans Am?

O.K. i have an 86 trans am and just recently replaced the heater core myself. First thing you do is drain all the coolant from the engine. disconnect battery. the heater core is located on the passenger side inside the lower dashboard. You will have to unscrew the lower dashboard and either let it hang down or pop out the convenience light to make more room to move it out of the way, i would pop out the light. Once you have it down there will be a rectangular black box like covering, you will need to unscrew this, note that it would be best to use a long socket extension as there are screws at the topback, use a flashlight first to check out where all the screws are, there are about 5 or 6 if i recall. Once you have the screws off pull the recantangular shaped box towards you and down. Might have to play with it to get it out. Once off, there is another black like box with a metal plate on it. Unscrew the metal plate and unscrew the black like box. Again there are screws that are hard to see so use a flashlight first to check out where all the screws are whether at the back top or sides. I believe again there are 5 or 6. Once you have the screws out pull the box from the left side towards you to release the clip that is attached to the heater core, you cant see the clip but the box covering is attached to the heater core so you will have to play with the box covering to get it to come off, you will be able to see the exposed heater core once the box is off. Next, disconnect the hoses in the engine bay against the firewall, the two inlet outlet hoses. You can't miss them, they are the only ones going into the firewall on the passenger side. If they are hard to pull off they maybe melted on or the pressure is keeping them on. You will have to cut them off and get 2 new heater hoses. Don't bother trying to pull them off if they are stuck, i tried, waste of time and frustration. Use a knife to slit the hoses at the firewall, this will release the pressure. Once you have the hoses off the heater core tubes at the firewall, go back inside the car and pull on the heater core towards you to pull it out. Put in the new heater core, if the tubes on the new heater core dont go through the firewall holes because they are to far apart, bend them in slightly, you will hear some metal creaking but this is the only way, I did this and have had no problems. Attach your old or new heater hoses again in the engine bay to the new heater core tubes that come through the firewall and clamp them and clamp them at the engine block as well. Put new coolant in the car. reattach battery. Start car to get new coolant circulated and look at the heater core to make sure there are no leaks as well as the hoses. let the engine warm up for 5 to 10 minutes then turn off engine. Go back into the car and start to put the black box with clip back into place. Note that this part is tricky as i could get the black box clip onto the heater core but the long bar clip at the end of the black box would not let me screw the box into place so i unscrewed it from the black box and just had the one clip from the box on the heater core, to get it to screw into place. Once you have this box in place re attach the metal plate and then put the other retangular box back in place with screws and then reattach your dashboard. Check the coolant level again and add more coolant if necessary. Will need to start car again. , can be frustrating but there are also manuals out there to help. ok,, i got the houseing off that houses the heater core i took the screws out that hold the clip for the heater core,, but when i go to pull it out it seem slike its bending the tubes, now when i put my new one in will it be ok or will it bend the tubes and wreck them or just be careful and gentle with it or does the days have to come off?? i got the top dash piece off the basket for the stereo deck,, and the housing underneath,, now i am concerend whether this method will work without damaging anything.


How do you install a block heater?

The port for the block heater is a small hole approx. the size of a quarter located on the windshield side of the motor, closer to the driver side of the car. It is just below the head (top part of motor) in the cylinder block. Make sure the hole is clean of dirt and debris by blowing it out, then simply push the heater element in until it clicks, that's it! ...well then you should plug the cord in... but that's it I swear!


How to bypass the heater core on a 2000 S-10 Blazer?

You go through the dash, that's all I know. Pain in the neck. Good luck with that one. It is under the passenger side dash. You do have to take apart the dash though. The back of the glove box has to come out. It takes about two hours because some of the bolts are really hard to get at. You need a long bendable extension or wobble with long extention. then climb under the hood and disconnect the hoses and hose retainer. You don't have to remove the whole dashboard. If you take out the glove compartment liner and the radio you can access all the housing screws around the heater core, with some gyrations. On mine I had to remove the front right wheel and fender liner to get at the heater-hose attachments, which are on the engine side of the firewall, under the air-conditioning housing, virtually inaccessible otherwise, and easily reached this way. Have fun with it!!

Related Questions

How do you replace the heater hoses on a Ford F-250?

the inlet heater hose that connects to the top of the water pump connects to which outlet on the heater core? the far outboard or the inside? this is in a 2002 ford f250, 7.3.


How do you determine which is the inlet port and which is the outlet port on the heater core on your 1998 ford Taurus?

Trace the heater hoses back towards the engine. The one that comes out of the top of the engine is the inlet. The one that attaches near the water pump is the outlet. Rick I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com


Where is the heater inlet hose located on 2003 Chevy venture?

There are two hoses that connect to the heater core, and they are located next to the brake master cylinder, on the driver side of the van. I believe the bottom hose is the inlet and the top hose is the outlet. Good Luck, Greg


No heat in cab inlet hose to heater core is warm top hose to radiator is warm but soft Whats up?

Thermostat opening too soon? Heater air bound and needs to be bled


How do you reattach hoses to heater core 2000 dodge durango?

The two heater core hose in the engine compartment come from the timing chain cover, and end at the inlet and outlet connections at the firewall. There it connects to the heater core tubing under the dashboard. UPDATE: What? I hate when people who know nothing about the subject attempt to answer these questions. The driver's side heater core hose runs from the water pump, along the driver's side valve cover's lower side, to the top port on the firewall. The other hose runs from the thermostat housing, along the passenger side valve cover, then behind the engine top, near the distributor (if equipped) to the bottom port on the firewall. The hoses are attached by hose clamps on both ends, either screw/nutdriver type or the stock plier-squeeze type. There is aluminum pipe from the firewall to the actual core itself, inside the vehicle behind the dash, but i believe it is welded. The timing chain cover has nothing to do with the heater core


In a 2003 Bonneville which of the hoses to the water pump is the heater inlet hose?

On a 2003 Bonneville, the hose to the water pump that is the heater inlet hose is the top hose coming from the radiator. This is also the hose that holds the thermostat.


Why would water accumulate on passenger floor of 1996 jeep wrangler?

the heater core has got a hole in it or your top has a hole init. If the water is green it is your heater core. if not it is your top.


Where is the heater core at on a 2000 Daewoo nubira?

The heater core is located on the air distributor case. It is covered in the case and directly on top of the assembly.


Which heater core hose goes on the top?

Generally the return line.


How do you replace the front heater core in a 1998 ford expedition?

The dash has to be removed. Once the dash is out, the top of the heater case comes off to gain access to the core.


How do you replace the heater core on a 1997 Buick LeSabre?

You hav to put it on top


Is the antifreeze going into the heater core coming from the lower radiator hose?

No. The top hose goes to the engine. The bottom hose feeds from the engine to the heater core back to the radiator.