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1994 Ford E-150 Question: we replaced the rear heater hoses but it only blows cold air. why?

 

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littleo21, 5.0L V8, Renner, SD, March 05, 2013, 18:32
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the rear heater hoses broke so we replaced them but now it just blows cold air. what is wrong?

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  • Answer #1

    pushrod March 06, 2013, 05:49
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    Are hoses getting warm at the rear? Sounds like air in coolant system! Or hose restricted ie kinked, pinched ect.

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    littleo21, March 06, 2013, 06:56
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    the hoses are hot half way back. one is hot the other is cold.

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    pushrod, March 06, 2013, 07:03
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    Check to see that hoses are not restricted then make sure it is full of coolant and run it for awhile.
    How long have you let it run so far?

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    littleo21, March 06, 2013, 07:07
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    It is full of antifreeze and we let it run for a half hour. We even drove it 20 miles and still cold. No
    crimps in hoese.

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    pushrod, March 06, 2013, 07:15
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    Remove the hose that is cold to the touch and see if any coolant comes out of it when engine is reved up.
    There is no HOT coolant flowing through the rear heater core. Find out why and problm solved, all we can do is guess at the cause!
    Are both hoses the same size inside? Try switching them if so.

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    littleo21, March 06, 2013, 07:39
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    Yes the hoses are the same and we switched them and it makes no change.

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  • Answer #2

    Greg's Orange Auto (13179 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 06, 2013, 06:33
     Master

    follow #1 nd ck coolant level to start with

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