If the core is out of the truck, reverse flush and then soak in a "tub" of vinegar for 24 hours and again, reverse flush. Now check the output on the outlet side. If better but not to your satisfaction, repeat the vineger soak.
If in the truck, hook up a vertical hose to the inlet and outlet heater core nipples and pour in the vinegar for the overnight soaking and do as above.
2006-11-01 13:03:23
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answer #1
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answered by Anonymous
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You could try cooling system cleaners. I have seen a car radiator cleaned out by removing the top or bottom tank, can't remember which now, and pushing the mud out of the tubes with a welding rod. The tank was re-fitted and the radiator replaced. Good to go. The owner got a good lecture from the radiator guy about using well water in his radiator! If you can remove and replace the heater core yourself you are part of the way there.
Maybe a garden hose might push the mud out? Steam hose? Maybe hook a water or steam hose to one of the disconnected hoses of the heater without removing it from the truck? Worth a try for the sake of 200.
CLR is far too aggressive for a cooling system.
2006-11-01 12:55:10
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answer #2
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answered by Anonymous
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so you don't have to remove the heater core try this first, go under the hood and disconnect the hose's at the fire wall from the core, connect the end's of the hose's together with a small peace of pipe so you can drive the truck, go to a self-service car wash with a High Pressure sprayer and put it into the outlet side on the core and spray, then do the inlet side, keep repeating this til it comes unclogged.
2006-11-01 13:28:14
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answer #3
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answered by paul c 2
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Had a newer F-150 in the shop the other day, 300,000+ miles on it. Heater core had been plugged up for 2 years or so. We removed the hoses going to the engine, pushed water through the core each way, then applied shop air to one side, flushed it with water again, and then applied air to the other side. We did this a few times and it finally started working.
BE CAREFUL NOT TO USE HIGH PRESSURE OR YOU COULD BLOW THE CORE APART.
2006-11-01 14:44:25
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answer #4
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answered by ? 6
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If it is truly clogged, I doubt if there is a fix. You can try a garden hose, squirting first in one nipple, then the other, to see if you can get a clear flow through it. Chemicals are nasty, and won't work if you have no flow anyway, but you can try vinegar. Just be prepared to leave it soak for hours, then back-flush with the garden hose.
2006-11-01 12:54:51
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answer #5
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answered by Fred C 7
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Depending on what it is clogged with, you can try vinegar if clogged with lime, or any good quality radiator flush would also be a good try.the other option is replacement, I checked at NAPA (I work for a NAPA car care center) and the list price (retail) is only $31.79 to $37.40 depending on if it has A/C or the optional high output heater. don't forget a gallon ao anti-freeze to re-fill the system.
2006-11-01 13:04:14
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answer #6
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answered by Carl 1
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Don't unclog it. Replace it. The places in the core that haven't seen circulation in a while are corroded and ready to go. If you did manage to unclog it, it would be leaking withing a month.
2006-11-02 10:36:16
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answer #7
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answered by Nomadd 7
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Just replace it those are so cheap to replace
2006-11-01 16:05:06
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answer #8
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answered by stealth5033 3
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