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no hot air #672903 12/02/05 04:09 AM
Joined: Mar 2005
Posts: 63
89toyOn35s Offline OP
Getting the Wheeling Fever
hey a guy at work has a 99 expidition 4x4 4.6 triton v8 and his wife is saying there is no heat comeing from the vents in the truck we checked the a/f and changed the thurmostat
still doesn't work what else could it be thanx

Re: no hot air [Re: 89toyOn35s] #672904 12/02/05 03:13 PM
Joined: Jun 2004
Posts: 1,904
W
wyleone Offline
Body Damage is Cool
Busted blend door or the blend door motor. That is if the cooling system is good to go. When it has run for a while, touch the heater hoses and see if they are hot, both should be. If only one is hot the the heater core is stopped up inside. I do not envy any man that has to do a heater core in a Expedition. The first one I swapped out took 12hours. After 5-6 more I can do them in 3-4. This is using power tools too. My vote in the blend door motor is not working, either circuit wise or the motor is just bad.


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