Question about 1999 Ford F150 Regular Cab

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The heater core went out on my 1999 F150. My brother-in-law helped me bypass it so I can drive it without a cloud of antifreeze coming into the cab. Is there any way to replace it without removing the entire dash? If I have to remove the dash, where can I find instructions on doing so? I really don't want to damage or compromise the airbags in the process. Thanks!!!

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Yes ... sorry you do have to remove the entire dash to do this job,the air bags won't be a problem. the information you seek you can find at autozones web site:

just enter your trucks info navigate your way to the information and wah.. lah!!!

hope this helps

Posted on Mar 11, 2011


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Take it in to have the cooling system flush out,

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Sounds like the heater core is leaking. Locate where it is and see if antifreeze is leaking out the bottom.

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My ford 1997 F-150 4.6L has a antifreeze smell in the cab when it is running, think it might be the heatercore?

yes it sounds like it might be the heater core when your heater core goes bad it leaks and seeing that it is in the cab it will have that smell usually when it leaks your floors will be wet from the leak. bypass the heater core unitl you can get it fixed to prevent any electrical problems

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1999 ford 4x4 5.4 water from back of eng on pass side

If this is plain water and not antifreeze this is normal if you have been using your air-conditioner the drain for your a/c is on the right side. If the humidity is high you will see water dripping from the right side. You can try leaving your a/c off and see if you still have the same problem. If it is green or red in color you have a antifreeze leak more than likely a heater hose or heater control valve and possibly a heater core. Have the system pressure tested to pinpoint the leak.

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Jul 03, 2011 | 1999 Ford F150 Regular Cab

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You trucks heater core is leaking inside the dash heating vents, the air blower motor blows through the heater core and then you smell the leaking coolant in the form of a sickly sweet vapor. You will need to replace the header core, this is a fairly big job and in most cases best left to a professional.

Mar 05, 2011 | 1999 Ford F150 Regular Cab

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No heat in cab f150 2002 extended cab the gauge shows that the engine is warm.

Check the antifreeze protection. Has it been more than 2 years since you changed it? If there's too much water,you need to add antifreeze. Or,you may need to replace the thermostat.

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I changed the thermostat on a dodge ram 1999 with a 318 and there is still no real heat it has 141000 km on it and the coolant still looks good

have you backflushed the system? Especially the heater core. They tend to get blocked up and won't provide heat. there are bypasses in the system which will allow the coolant to circulate without going through the heater core. Another thing would be to test your antifreeze for the proper mixture. if there is too much antifreeze it won't allow proper heating.

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The heater does not blow hot air, Is there a simple fix for this problem? The heater worked fine last season. This year all I get is warm air.

There are several potential issues to consider. First, check your antifreeze level--making sure you don't open the radiator cap when hot, of course. Your cab heater uses engine antifreeze for a heat source, and when the level is low, there may not be enough fluid to reach the heater core. This is the most common reason for poor heat output in the cab.

If that checks out, it is also possible that you have clogged or collapsed hoses leading to the heater core, or that the heater core (located in the cab) is clogged. This can occur when antifreeze has not been changed often enough, when internal engine rust had built up, or especially when a "radiator seal" product has been added to the antifreeze.

It is also possible that nothing is wrong with the heater core but that the various controls, ductwork, or dampers for your truck have become jammed or broken and that the system is allowing a mix of cold air with the hot air--in spite of your setting asking for all hot air. Since many modern cars now have electronic controls for the heat, this can be difficult to judge without disassembly.

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