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Discussion Starter #1
So that everyone can understand the circumstances, it was 2 degrees over night and 20 degrees when I got into my car and started it just a little while ago. After letting it sit and get oil flowing through the engine 6-7 minutes, I put it in gear and start down the road at a blistering speed of 28-30 MPH. (I don't hot rod my DD) After driving 5 miles or so, the heat gauge begins to move. I see this and turn the fan nob just a little, just enough to have the fan on, (very low) after making sure I'm not going to run into anyone, I look down where the heat should be coming out, and the air is stone cold. By now the car is up to 55 and has been for a few miles and the heat gauge has now moved to a point to where I should have heat. Now I'm thinking, Oh crap, I've got a stopped up heater core, RIGHT!!?? 23 miles and no heat all the way. I get to where I'm going, the temp gauge is in the right spot and still no heat. I changed the temp all the way up, then all the way down, then up once more and no heat, :redmad:%&$# piece of [email protected]!# ford heater cores:redmad:, I'm PO'ed can ya tell? So, I go into the store and get supplies before the snow storm hits. I'm there maybe 30 minutes, come out, get in the car, hit the ignition, and WTF, now I got heat.:confused:

Anyone got a clue as to whats going on there? The coolant is at the proper level. It got flushed back in early Nov, with new coolant. Even the core was flushed. No head gasket leaks that I can tell, and, she doesn't use or burn oil. She is a good girl, and behaves most of the time, but now I'm scratching my head :zdunno: wondering WTH is going on.

Thanks for any help in advance
 

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I had something like that happen a while back, It ended up being what I think was an air pocket (really weird though, it seemed to come and go at will). It was an intermittent issue with mine and the way I ended up fixing it was, hooking it up to the coolant machine at work and running it through a couple times with the heater on and at operating temperature.
 

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Discussion Starter #4
I don't know. I will have to check that if it does it again. If they're not, what do I look at next?
 

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There are 3 things that could cause it. Either a blocked heater core, an air pocket, or the coolant froze. A blocked heater core usually happens over time, so you would usually see the heat slowly start getting worse, and eventually you would have no heat, and also blocked heater cores don't usually unclog themselves, so it's probably not that. You just had the coolant flushed, so it should be good to those temperatures, but I would get a coolant freeze protection checker and double check it just to be sure. If it did freeze, then leaving it sit after the engine warms up could have melted the frozen coolant, and now you have flow again. But given that the coolant was changed recently, that leaves it probably being an air pocket caught somewhere int he system. If the air pocket gets to the heater core, it will stay there, and you will have no heat. When you parked and shut the car off, the pressure increased in the cooling system because it wasn't flowing anymore, and that forced more coolant into the heater core, which caused flow to resume, and now you have heat again.
 

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Some say "Burping' the system is not necessary, But it sure does not hurt . And I think the OEM manual in my glove box says to .
 

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I don't know. I will have to check that if it does it again. If they're not, what do I look at next?
If only one hose is warm it would indicate a blocked heater core.

Ive never burped a 4.6 SOHC motor, only the DOHC and the 3.8 .. your information says 460 .. so which motor do you have in the Bird ???
 

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Discussion Starter #9
your information says 460 .. so which motor do you have in the Bird ???
I have four birds, 1 has a 4.6, 1 has a 3.8 SC, 1 has a 460 small block, and 1 has a 302. I kinda like birds, can ya tell? This and I have 2 jags, 1 chevy 4X4, and 2 bikes. My driveway is full, along with the basement. I rather like my toys.
 

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460 small block?
 

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Discussion Starter #12
yes...its a man o war 351W based block....

I think a few have asked for some pics, but none have been provided......I would like to see a pic of the 460 bird...
Yeah, I know. One, I need to get a camera, two, I need to figure out how to post on here. I have read the "how to" on it but till I get a picture of the cars, there's not much point. I guess I need to change the listing to one of the other birds.
 

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Yeah, I know. One, I need to get a camera, two, I need to figure out how to post on here. I have read the "how to" on it but till I get a picture of the cars, there's not much point. I guess I need to change the listing to one of the other birds.
its all good man........If and when you do take some pics, you are more than welcome to e-mail them to me, and I can host them for you.
 

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You're not too far from Alan (dirtyd0g) -- I wonder if he'd be remotely willing to get some pics of that beast for us...or one of the other Cincinnati area members....?
 

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Discussion Starter #15
its all good man........If and when you do take some pics, you are more than welcome to e-mail them to me, and I can host them for you.
That would be cool. Thanks man.:thumbsup:
 

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... so which one of your 4 Tbirds is having the issue with the heater ?? The 5.0, 3.8, 4.6 or the 460 ??? :confused:

Jaguar .. the other other Ford. I just worked on a 2004 X-type recently, I feel right at home under these cars. :D
 

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Holy $#!+! All aluminum 460...I must have it!
 

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Discussion Starter #18
... so which one of your 4 Tbirds is having the issue with the heater ?? The 5.0, 3.8, 4.6 or the 460 ??? :confused:

Jaguar .. the other other Ford. I just worked on a 2004 X-type recently, I feel right at home under these cars. :D
It's the 4.6, my (DD) and the jags are 83 and 87. Pre Ford.:tongue:

As for Alan, he's in Batavia Oh, and I'm N. Pendleton Co. and it's some 82 miles one way from point to point, there ain't no bridges close. Either go up to Cincinnati, or down to Maysville (that's even farther). However, when I get my tranny redone:(, I might be able to talk him into it.:)
 
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