Question about Kia Sedona

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The rear coolant lines to rear heater matrix has corroded. I need to replace lines . How do you get air out of lines when filling?

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It will rise up itself with no problem here at all ,use copper water pipe as it will not corrode again and make sure you put antifreeze in to prevent internal corrosion ,Nothing special to worry about it will bleed its through with no problem at all

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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99 dodge ram started overheating all of a sudden a sputtering sound came from directly behind glovebox then the temp went back down what could this possibly be?


If the heater matrix is buried somewhere behind the glovebox, the noise could have been air or combustion gas being pumped through the matrix.

Cylinder head gaskets normally allow small amounts of combustion gas to escape and the cooling system is designed to allow it to rise rapidly above the coolant level, often with additional ports and vent hoses leading to the degassing tank.

If the degassing system becomes blocked due to the cooling system being dirty or corroded the gas bubbles can build up and displace coolant and disrupt the thermostat operation and eventually be forced into the heater matrix causing a vapour lock.

A failing head gasket will have a similar effect...

These things will need checking. Overheating is invariably caused by insufficient coolant circulation and/or insufficient cooling air flow through the radiator.

May 06, 2017 | Dodge Cars & Trucks

1 Answer

Heaters slow at warming up


In normal circumstances the heater wouldn't begin blowing warm air until the vehicle has travelled 5 miles - call it 5 minutes. That's because the thermostat only begins to open at around that mileage/time and allows coolant to circulate around the engine. Before that - there just isn't any warm coolant in the heater matrix.

After 10 miles/10 minutes of normal driving the engine will be at its correct operating temperature and the coolant will be hotter - as will the circulating coolant in the heater matrix. That's when the heater blows the hottest air.

If you're sure that the heater has lost efficiency it may be due to air being trapped in the heater matrix/coolant system, or a blockage caused by limescale/engine corrosion within the heater matrix itself.

To remove any trapped air, set the heater to maximum, remove the radiator cap/coolant bottle cap and let the engine tick over for 10 minutes.

If the heater matrix is blocked/partially blocked, drain the coolant system, refill with plain water, set the heater control to open .. and let the engine tick over for 10 minutes. Drain it again.

Refill again with plain water and add a can of 'radiator flush'. Follow the instructions on the can of 'radiator flush'.

Drain again and refill with coolant/water.

If the heater is still inefficient then the only option is to replace it - and that's not an easy job.

Jan 21, 2016 | 2006 Nissan Navara 2.5

1 Answer

How do i replace the heater core 1997 isuzu hombre


See me at website for images can only send one through this channel. www.autorepairhelp.us

Best Regards,

Master Tech Lee

HEATER BOX SHIELD
Image
Heater Box Heat Shield
Remove or Disconnect
1. Fasteners that retain heat shield to heater box assembly.
Image [ Heater Box Heat Shield
Install or Connect
1.Fasteners that retain heat shield to heater box assembly.
Tighten
-Bolts Screws to 2.2 N.m (25 lb in).
HEATER ASSEMBLY
Image ' Heater Hoses
Image ' A/C Evaporator Tube Assembly
Image ' Evaporator Core
Image ' Evaporator Core Assembly
Image ' Heater Assembly
Remove or Disconnect
1.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
2.Heater hoses. Refer to Heater Hoses.
3.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
4.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
5.Vacuum lines.
Important
-Clearly label vacuum line connections.
6.Heater assembly studs inside engine bay.
7.Blower motor resistor. Refer to Blower Motor Resistor.
8.Stud inside heater core housing.
-Stud is revealed by removing the blower motor resistor.
9.Rear case screws.
10.Heater assembly.
11.Seals.
Imagt
Imagt
Imagt
Imagt
Imagt
Heater Hoses
A/C Evaporator Tube Assembly
Evaporator Core
Evaporator Core Assembly
Heater Assembly
Install or Connect
1.Seals.
2.Heater assembly.
3.Rear case screws.
4.Stud inside heater core housing.
Tighten
-Stud to 1.9 N.m (17 lb in).
5.Blower motor resistor. Refer to Blower Motor Resistor.
6.Heater assembly studs inside engine bay.
Tighten
-Studs to 1.9 N.m (17 lb in).
7.Vacuum lines.
8.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
9.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
10.Heater hoses. Refer to Heater Hoses.
11.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
-Check the system for leaks.


Auto Repair Help US 699e5693-1e5b-4101-9428-b5c0b4e46f83.jpg

Sep 06, 2014 | 1997 Isuzu Hombre

1 Answer

How to clean corroded coolant system in a 4.3L 2000 GMC sonoma


All that needs to be done is "burp" the system of the air bubble inside the heater core.(be sure that the vacuum lines are connected to the heater control valve)


This works for most cars and trucks:
Park the truck on a steep incline so the front is angled up at about a 30* angle.
Rev the engine a few times and then run the truck VERY hard for a few times at higher RPM.
That usually purges the air bubble out and you should get heat.
Check the coolant level in the radiator when it cools down.
Fill the resevoir ,again and see how much it takes.
Usually about 2 quarts.
After one cycle of hot and then cool,the resevoir/overflow bottle will cycle and pull the bubble out of the system.

The cheap/easy way to get the coolant clean is just to use the garden hose.Fill the radiator and then run the truck and drain it a few times.
If you do this,you will need to purge the system again.

Please recycle the old coolant. Sears and O 'Reilly's will take it,free.

Jan 19, 2013 | Cars & Trucks

2 Answers

2004 trailblazer coolant leaking rear


It may be from a rear heater, possible corroded line, had the problem with my suburban and my sisters 4 runner. just replaced the line.

Nov 28, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

Heater is very poor


Has the vehicle been run with anti-freeze its whole life? If not, then flush heater matrix.

With vehicle in cold state, disconnect heater matrix feed and return pipes from within engin bay. Turn the vehicle's internal temperature setting to hot. If the vehicle is fitted with climate control, then do this with the ignition in the 'on' position.

Take a garden hose and with low pressure first, try flushing the matrix. If the water pressure is not enough to flow through matrix at low to medium pressure, then a blockage is almost a certainty. If water does not flow at first, then try using a high pressure air-line to force air and any blockage material through the matrix and out of the exit pipe. You can also reverse the flow to blow or flush any dirt out of the other end.

Once all is clean and free flowing, reconnect and fill entire system with a 50-50 anti freeze-water solution.

If blockage cannot be resolved, then replace heater matrix.

If no blockage is present then continue to check heater control switches and wires.

Oct 29, 2012 | 2000 Lincoln Navigator

1 Answer

2000 ford escort over heats,and no heat .


try replacing thermostat and do a coolant flush, heater matrix behind dash is prone to blockage or leakeage ( with leakage usually footwells are always damp ) before you replace the coolant after flush, fill and drain with water a couple of times, should sort it and it easier than replacing heater matrix. if heater has not been working for a while, as in 12 / 18 months matrix replacement might be only option, but spending a couple of quid on flush is worth a try first

Oct 05, 2011 | 2000 Ford Escort

1 Answer

No heat, thermo ok, heater control valve ok, no blockage in heater core. blowers work. Line going from rear engine after HCV is hot through firewall, return line back to water pump is cool. As if not...


would need a look but i suspect that the heater matrix is blocked ,drain antifreeze then fill with water and add half a cup of caustic soda and run car like this for a day or so and it may clear the blockage mif so drain the caustic soloution then flush really well then add the coolant ,never use plain water

Sep 16, 2011 | 1994 Jaguar XJ6

3 Answers

2003 kia sedona over heating and no heat


Check your rear coolant lines, These lines always rust and start leaking coolant and thats why your engine over heats and you dont get any heat inside your car. This is a common problem with kia sedona that have rear A/C and Heater. There are two fixes to this problem. The first is to replace the rear heater coolant lines with the updated lines from kia. The second will be bypassing the rear coolant lines with a hose, however the rear heater will not work with this method.

removing the rear coolant lines is not that easy. The lines near the fire wall are really hard to remove. Its also much easier to replace the lines with the car on a hoist.
hope that helpfull

Kia mechanic

Dec 29, 2008 | 2003 Kia Sedona

1 Answer

Coolant fill procedure


You may have air trapped in the system or rust plugging up the rear heater core. core, if it is just an air problem do this: Fill the radiator and the coolant recovery tank as full as possible, then raise the front of van as high as you can with a floor jack, run the engine until it is at normal operating temperature, let it cool down, running water over the radiator speeds this up, this should purge the air out of te system and cure your issue with the rear heater. Make sure you have a good radiator cap if it is the original one replace it. If the system still has no flow to the rear pull out the rear heater core and flush it out or replace it.

Sep 10, 2008 | 1998 Ford Windstar

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