Clogged Heater?
Junior User
Joined: May 2002
Posts: 69
Likes: 0
From: Beaverton, Oregon
Clogged Heater?
I put in an question about my heater. It stopped blowing out hot air not too long ago. You can feel a little bit of heat comming out the vents but it doesnt blow Ford hot anymore. I was told the heater core might be clogged, is there any way I can unclog it or am I looking at putting another one in again.
The heater core i just replaced about a year ago and my turkc doesnt over heat, it seems that the coolent goes in one hose and just doesnt ever come back out I think. ONe hose repains hot after the truck shuts off and the other hose cools down alot faster.
Any help with this situation woulf be great.
~Jason
The heater core i just replaced about a year ago and my turkc doesnt over heat, it seems that the coolent goes in one hose and just doesnt ever come back out I think. ONe hose repains hot after the truck shuts off and the other hose cools down alot faster.
Any help with this situation woulf be great.
~Jason
Junior User
Joined: May 2002
Posts: 69
Likes: 0
From: Beaverton, Oregon
Clogged Heater?
Oh ya, and one more thing I did. I took one of the heater hoses off after I ran the engine so it warmed up I took off one of the heater hoses and ran the enigine again. Anti freeze flowed out the open end of the heater core slowly and some came out the hose. It seems that its getting a some fluid through there. I dont know. Could i be the water pump not functioning properly? But then again you'd think the truck wouldnt run cool if it did.HELP!!!!
~Jason
~Jason
Senior User
Joined: Jul 2002
Posts: 137
Likes: 1
From: Gilbert USA
Clogged Heater?
open your hood and on the left side of the firewall you'll see the blower motor. i think there are 5 lil screw bolts, take them off and disconnect the wiring harness. Pull the motor off and look inside there for junk like leaves mud etc... I had the same problem kinda, in the summer my AC wasnt blowing hardly at all when cranked all the way. I pull off the motor and looked inside there and found all sorts of crap. You have to look really well though my problem was along the condensor side, but if you find nothing then as mentioned above check you heater core lines etc...
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Clogged Heater?
So, you left the hot hose attached to the core and removed the cool one? And with the truck running at operating temp there was just a little trickle coming out of the core?
If that's the case then I think the core is plugged. Water should flow freely with the truck running. When the core was replaced the last time was the radiator flushed? Generally a core will plug because the trash, rust, scaling, etc. from an old radiator is too much for the core to pass.
If that's the case then I think the core is plugged. Water should flow freely with the truck running. When the core was replaced the last time was the radiator flushed? Generally a core will plug because the trash, rust, scaling, etc. from an old radiator is too much for the core to pass.
Senior User
Joined: Mar 2000
Posts: 360
Likes: 0
Clogged Heater?
Here is a quick heater core flow test. Disconnect both hoses at the core tubes. Take a garden hose, no nozzle on it, just the hose end, with the faucet on maybe 1/2 turn. Just hold it up to one of the core tubes by hand. Water should pour pretty fast out of the other tube if its not plugged. Try putting water into the other tube. Should be the same thing.
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Senior User
Joined: Feb 2002
Posts: 208
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From: Stockton USA
Clogged Heater?
As I remember when I replaced my leaking heater core last year, the temp control cable hooks to a water valve to regulate the amount of hot water reaching the cores - or how fast it flows -
At any rate, the control cable end just snaps onto the valve, and if it has come loose, or, more likely, the water valve is defective, you won't get a high enough flow to heat things up.
If you do the 'flow test' mentioned above with a garden hose, you should check the water valve also to make sure it's opening all the way 'open'. Pull off the glove box door and check it out.
At any rate, the control cable end just snaps onto the valve, and if it has come loose, or, more likely, the water valve is defective, you won't get a high enough flow to heat things up.
If you do the 'flow test' mentioned above with a garden hose, you should check the water valve also to make sure it's opening all the way 'open'. Pull off the glove box door and check it out.
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Senior User
Joined: Jun 2002
Posts: 241
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From: Colorado Springs, CO
Clogged Heater?
I just replaced mine and it took 15 minutes at most. 2 hoses and 7 bolts and you are done. If at normal operating temperature the inlet hose is warm and the outlet is not, or is alot cooler, you have a plugged heater core. Both should be about the same temp. Dirty radiator fluid is the probable culprit, so replace the core($16 at Autozone) and flush the radiator out.
Brian
1988 Eddie Bauer 351 EFI
Brian
1988 Eddie Bauer 351 EFI
Freshman User
Joined: Sep 2002
Posts: 48
Likes: 1
From: my house
Clogged Heater?
>I just replaced mine and it took 15 minutes at most. 2
>hoses and 7 bolts and you are done. If at normal operating
>temperature the inlet hose is warm and the outlet is not, or
>is alot cooler, you have a plugged heater core. Both should
>be about the same temp. Dirty radiator fluid is the
>probable culprit, so replace the core($16 at Autozone) and
>flush the radiator out.
>
>Brian
>1988 Eddie Bauer 351 EFI
Ditto here, I just did mine ten minutes ago.Was doing the same thing yours is.problem fixed.
>hoses and 7 bolts and you are done. If at normal operating
>temperature the inlet hose is warm and the outlet is not, or
>is alot cooler, you have a plugged heater core. Both should
>be about the same temp. Dirty radiator fluid is the
>probable culprit, so replace the core($16 at Autozone) and
>flush the radiator out.
>
>Brian
>1988 Eddie Bauer 351 EFI
Ditto here, I just did mine ten minutes ago.Was doing the same thing yours is.problem fixed.
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