GOT A 87 442,PERSON BEFORE ME TOOK OUT AC,PUTTING ALL BACK IN AND IS WORKING NOW BUTTHE VENT JUST DOSENT BLOW HARD ON HEAT OR AC FLOOR BLOWS HARD JUST STUMPED AT THIS POINT ANYBODY THAT CAN HELP PLEASE DO HEAT HAS NEVER BLOWN HARD SINCE I HAD IT OUT THE VENTS
VENTS NOT BLOWING HARD
- Thread starter outinfront442
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My first guess is that a vacuum line got disconnected and isn't properly switching the air director. If you here the flapper moving, my next guess would be the ductwork wasn't sealed well.
I don't understand what you are trying to say. So the dash vents dont blow high but the floor vent does?outinfront442 said:
Veltboy618 said:
when the air or heat is on the floor setting it blows great but when u switch it to vent it barely blows anything out
What 83Hurstolds is trying to say is that your vent controls are controlled by vacuum. There is a vacuum line running from under the hood to the vent controls in the dash. The at rest position, in other words, with no vacuum, is the floor position with very little to the vents and dash. So it sounds like you have no vacuum signal making it's way to the vent controls.
It is common for the line under the hood to break. I would check that first. The line runs from the engine and goes through the firewall on the passenger side. If the line looks ok, check for vacuum at the switch. It is also common for the two vacuum switches to leak, which could cause the problem as well. You can hear the switches leak most of the time.
It is common for the line under the hood to break. I would check that first. The line runs from the engine and goes through the firewall on the passenger side. If the line looks ok, check for vacuum at the switch. It is also common for the two vacuum switches to leak, which could cause the problem as well. You can hear the switches leak most of the time.
AlanB, that's exactly what I mean... If I understood his question right, that sure sounds like what it is to me. Thanks for the english to english translation. 
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