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#1 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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some questions???
could my valve cover leaking/being cracked cause a vacuum leak?
and i think my powersteering box is going bad ![]() and how does the defroster hook up? i put in all the air ducts under the dash, and it blows out of the vents again, but not from the top of the dash, so my defroster doesnt work. |
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#2 |
Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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There is a vaccum line that operates the defrost flap if it is not getting vaccum it will not move the flap to direct air to defrost. That is all I can think of.
__________________
1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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#3 | |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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Quote:
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#4 |
Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Yes I think is comes in from the resovoir ball on firewall. It controls many functions of the ducts I think defrost and dash vents and the vents in the kick panel it comes in to the control unit in dash and then splits up I think.
__________________
1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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#5 |
Registered User
Join Date: Oct 2002
Location: The Netherlands
Posts: 118
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On my truck there's a vacuum thingy on the firewall on the righthand side wich moves the flap for the defrost/heater outlets.It's near the heater box.It is controlled by vacuum,and moves when I go from airco to heater.When in airco position,it shuts the heater outlets.Maybe there's something wrong with yours,at least there was with mine.I removed the vacuumhose.I don't use the airco.
Hope this helps.
__________________
*Andre* 1984 C10 SWB, 350/700R4 ![]() |
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#6 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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i didnt have it hooked up to a vacuum port.
thats what was wrong ![]() |
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