Question about 1990 Chevrolet Lumina

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What is the intake and out take of the heating core

Do you have a picture so we can see which one is the intake and outtake on the heater core? thank you

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My park ave engine light on when checking why it wont read error ? help please

Posted on Dec 17, 2008

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How to replace the heater core


1

Lift up your car's hood and locate the heater core. If you are not sure where the core is located, an auto parts store employee or a repair manual can help.
2

Remove the screws or bolts that hold the heater core in place. You may need to remove other parts of the car before being able to access the heater core.

3

Disconnect the intake and outtake hoses from the heater core. You may need a special tool to remove the couplings that connect the hoses to the heater core; refer to your car model's repair manual.
4

Remove the heater core. Be careful not to tip the core over, as coolant will leak out.
5

Reconnect the upstream and downstream hoses on the new heater core in the same matter that they were attached to the faulty core. Leaks can occur if the hoses are not connected properly.
6

Screw or bolt new heater core in place. Finally, replace all of the removed car parts.

May 10, 2012 | 1993 Cadillac Eldorado

1 Answer

Replace heater core


Hello,

To replace the core of your GMC 2001 Jimmy, You will be needing these instruments, Repair manual, Socket set, Screwdrivers, once You have them together, please follow the steps below:
  1. Lift up your car's hood and locate the heater core. If you are not sure where the core is located, an auto parts store employee or a repair manual can help.
  2. Remove the screws or bolts that hold the heater core in place. You may need to remove other parts of the car before being able to access the heater core.
  3. Disconnect the intake and outtake hoses from the heater core. You may need a special tool to remove the couplings that connect the hoses to the heater core (refer to your car model's repair manual.)
  4. Remove the heater core. Be careful not to tip the core over, as coolant will leak out.
  5. Reconnect the upstream and downstream hoses on the new heater core in the same matter that they were attached to the faulty core. Leaks can occur if the hoses are not connected properly.
  6. Screw or bolt new heater core in place.
  7. Finally, replace all of the removed car parts.
That is how to replace Your heater core.
Hope this was helpful. Thank You for using FixYa!!!

Jan 12, 2011 | 2001 GMC Jimmy

1 Answer

I am changing out the heater core on my 97 chevy lumina need to find out which hose is the intake and which is the outtake top or bottom? Can you help


if the hoses are the same side it doesn't matter, but usually hot in the bottom and out the top if you can figure out the flow

Dec 18, 2010 | 1997 Chevrolet Lumina

2 Answers

Can i bypass the heater core?


Yes, just loop the two lines going to the heater, with a hose connector at the bulkhead.
Fill up the cooling system with whatever amount of coolant that you loose when you take the hoses apart.

Mar 17, 2010 | 1995 Ford Escort

1 Answer

99 ford taraus, changed termo, changed heater actuater, flush, new coolant added, checked all fuses , intake and outtake hose hot still no heat


I believe your vacuum hose bundle to the mix valve is miss-aligned or off.Check that out before you drop more bucks into the repair.It is under the dash by the big box on the passenger side

Nov 01, 2009 | 1999 Ford Taurus

2 Answers

No heat in my dakota. flushed heater core and replaced therm with a reg one.


check for poor flow to heater core-change heater hoses -check for lime build up at intake connector or worn out water pump -if you only put water through core try using CLRlime cleaner in core-get two 6in pieces or heater hose hook them to core and pour it in and leave for 15 mins then wash out with water hose

Oct 04, 2009 | 1987 Dodge Dakota

2 Answers

When running the ac it overheats


flushing the radiator might not be enough to remove the water scales inside the small cavities...have it opened and cleaned thoroughly. In the location where I live they remove the top and the bottom part of the radiator and put a flat wire in and out into each of the flat tubes to dislodge the accumulated scales and dirt out. hope this helps

Aug 18, 2009 | 1995 BMW 5 Series

1 Answer

No heat in the cab. Temp guage doesn't move. Have lost antifreee, but no visable leaks.


Had the same problem with my 97 dakota (3.9). I reversed flushed the heater core and the problem is solved... too much heat. Instead of flushing the heater core normally, reverse the intake and exit lines and flush. Whatever is lodged in the core's intake should be discharged.

Apr 16, 2009 | 1997 Dodge Dakota

1 Answer

Lack of heat


switching the hoses is not recommended for trying to clear out a heater core because the coolant is meant to flow in one direction. you can try disconnecting the hoses from the heater core and flushing the core itself with a garden hose with low pressure in one direction for a few minutes and then switch and backflush the heater core. this is ok as long as the heater core is isolated from the engine cooling system. BUT if it is rusted pretty badly there is a chance it can develop a leak or blow out during the process so try it cautiously!! if the core is in-fact blocked you will have very little flow through the core and you will see what looks like rust coming out of the core, it may take quite a few times switching back and forth to clear it out. if it still remains blocked or if it starts leaking inside the car it will need to be replaced.

Feb 17, 2009 | 2000 GMC New Sierra 1500

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