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* UNDER HOOD-Let system cool. Loosen radiator cap to first notch and let system vent. Have a pan to catch spilling coolant. Disconnect both heater core hoses at firewall. Lay to side with ends up high so coolant does not spill any more than neccesary. Get a towel and place in passenger floor board to avoid getting coolant on carpet.Plug core tubes if possible. * UNDER DASH/BENEATH AND BEHIND GLOVE COMPARTMENT- Loosen 3 vertical screws closest to you and 2 vertical screws at back of core cover-then remove cover. * BACK UNDER HOOD-Push heater core tubes threw firewall. * BACK UNDER DASH-Pull straight out on core until tubes clear firewall and remove pulling core downward. Be sure to purge system after installing new core. There may be air in system.

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17y ago
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Q: How do you change a heater core on a 1988 Ford Bronco ll?
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