Clogged heater core?
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Clogged heater core?
2001 F150 Lariat SuperCrew.
Fired her up the other day to run some errands. Took off and heater never got hot. In case you don't know, we've had a bit of a cold snap here in Oklahoma. I can muscle through it, but Linda sure won't. Since it's her truck, I figure I had better get it working.
I though I would first back flush the heater core, as the radiator hoses are hot to the touch, but the heater hoses aren't nearly as warm. At least one of them anyway.
Which is the output? The one connected to the front of the manifold or the back of the engine?
Fired her up the other day to run some errands. Took off and heater never got hot. In case you don't know, we've had a bit of a cold snap here in Oklahoma. I can muscle through it, but Linda sure won't. Since it's her truck, I figure I had better get it working.
I though I would first back flush the heater core, as the radiator hoses are hot to the touch, but the heater hoses aren't nearly as warm. At least one of them anyway.
Which is the output? The one connected to the front of the manifold or the back of the engine?
Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
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From: NE Iowa JD Country
2001 F150 Lariat SuperCrew.
Fired her up the other day to run some errands. Took off and heater never got hot. In case you don't know, we've had a bit of a cold snap here in Oklahoma. I can muscle through it, but Linda sure won't. Since it's her truck, I figure I had better get it working.
I though I would first back flush the heater core, as the radiator hoses are hot to the touch, but the heater hoses aren't nearly as warm. At least one of them anyway.
Which is the output? The one connected to the front of the manifold or the back of the engine?
Fired her up the other day to run some errands. Took off and heater never got hot. In case you don't know, we've had a bit of a cold snap here in Oklahoma. I can muscle through it, but Linda sure won't. Since it's her truck, I figure I had better get it working.
I though I would first back flush the heater core, as the radiator hoses are hot to the touch, but the heater hoses aren't nearly as warm. At least one of them anyway.
Which is the output? The one connected to the front of the manifold or the back of the engine?
Flushing your coolant system is a good idea, especially if there is higher miles on her truck....in your situation I would replace the thermostat as well as doing the flush. The thermostat is most likely your culprit....IF the thermostat & flush does not do the trick...then you down to replacing the water pump.
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Thanks for the reply.
One hose connects to the front of the intake, next to the stat. The other connects at the back of the engine by the passenger side head. Haven't tried to stick my fat head back in there to see exactly where...
I'm assuming the one up front is the input, so I will push water into the rear one first to back flush it for a bit and then go the other direction.
One hose connects to the front of the intake, next to the stat. The other connects at the back of the engine by the passenger side head. Haven't tried to stick my fat head back in there to see exactly where...
I'm assuming the one up front is the input, so I will push water into the rear one first to back flush it for a bit and then go the other direction.
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