Need More Info
Thread Starter
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old enough to know better
Joined: Nov 2006
Posts: 1,418
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From: republic of kalifornia
Need More Info
Air Only Blows Out Of The Defrost Vents.
Have Read Here That It Could Be Vacuum Loss.
Looked Under Hood For Broken Or Disconnected Hose
But Did Not See Anything Obvious.
Could Someone Be More Specific As What To Look For
Thanx
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03 F250 6.0
Have Read Here That It Could Be Vacuum Loss.
Looked Under Hood For Broken Or Disconnected Hose
But Did Not See Anything Obvious.
Could Someone Be More Specific As What To Look For
Thanx
-------------------------------
03 F250 6.0
Last edited by gb'sfx4; Mar 21, 2007 at 11:46 PM. Reason: SPELLING
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Blend door motor could be bad, this will keep the correct door in the heater (plenum) chamber from opening. There are several on each truck. Please tell us what yr. and model truck you are working on, and whether it has a/c or not.
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
The "blend door" is only concerned with temperature control. There is a vacuum-operated diverter (several, actually) that controls all the airflow direction in the dash.
As you have a diesel, you have a separate vacuum pump that supplies the HVAC (and 4X4, if present) with operating vacuum. You will need to verify that the pump is operating and that it is supplying vacuum to the HVAC system. The supply line should be in the same place as the gassers, ie, right between the battery and the firewall. Inspect that particular line for damage, also.
Steve
As you have a diesel, you have a separate vacuum pump that supplies the HVAC (and 4X4, if present) with operating vacuum. You will need to verify that the pump is operating and that it is supplying vacuum to the HVAC system. The supply line should be in the same place as the gassers, ie, right between the battery and the firewall. Inspect that particular line for damage, also.
Steve
Thread Starter
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old enough to know better
Joined: Nov 2006
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From: republic of kalifornia
The Truck Is A 2003 Ford F-250 Crew Cab Long Bed Four Wheel Drive Xlt With A 6.0 Liter Turbocharged Powerstroke Diesel And Yes It Has A/c
I Have Dual Batteries So Should I Be Looking At The Drivers Or Passengers Side ?
The Engine Compartment Is So Packed It Is Hard To Spot Something I Dont What I`m Looking For
I Have Dual Batteries So Should I Be Looking At The Drivers Or Passengers Side ?
The Engine Compartment Is So Packed It Is Hard To Spot Something I Dont What I`m Looking For
