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Madxh
Fordmods Stock as a Rock
Age:26
Posts: 149
Joined: 06 Nov 2004
Location: Dandenong VIC, Australia
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 Posted: Sun Dec 05, 2004 9:14 am Post subject: A/C Change over box |
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ok the change over box in my xh wont change!
No matter what i turn it to, eg dimister, foot etc, it always blows out of the front vents, so how do i fix this? and where is the change over box located?? |
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Disco Frank
Fordmods Junkie
Age:29
Posts: 13745
Joined: 05 Nov 2004
Location: Perth WA, Australia
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| Posted: Sun Dec 05, 2004 12:35 pm Post subject: |
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basically u havea vacum leak! at teh back of the swicth there is a whole heap of vacum lines to send vacum to the right door motors etc to open/close them to direct teh airflow
one of these hoses has come loose/off hence why u only have air coming out in 1 spot regardless of the vent position swicth
not sure exaclty how to get at in your XH ute i am sure someone else on this site can help you in that regards
ps you car does not have a bad idle by chance? |
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altedxr6
Age:30
Posts: 1435
Joined: 05 Nov 2004
Location: Sunshine Coast QLD QLD, Australia
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| Posted: Sun Dec 05, 2004 6:48 pm Post subject: |
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Okay, under the bonnet near the A/C pipes there should be two vacum hoses, one green, one black, the black one goes into the rear of the intake manifold next to the brake booster hose. That one falls out, (well has done a few times on my ED before)
when thats happened, it only blows air at the window... so yeah, have a look and see if thats come unpluged. |
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Madxh
Fordmods Stock as a Rock
Age:26
Posts: 149
Joined: 06 Nov 2004
Location: Dandenong VIC, Australia
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| Posted: Mon Dec 06, 2004 5:52 pm Post subject: |
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| well actually the idle probably isn't that great, what effect would this have??/ |
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Madxh
Fordmods Stock as a Rock
Age:26
Posts: 149
Joined: 06 Nov 2004
Location: Dandenong VIC, Australia
View User Gallery (0)
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| Posted: Wed Dec 08, 2004 5:43 pm Post subject: |
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| i haven't lost any hoses from the back of the control unit, but could i have lost one off the box itself?? |
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madmax
Fordmods - Getting Side Ways
Age:45
Posts: 3748
Joined: 18 Nov 2004
Location: Skye VIC, Australia
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| Posted: Wed Dec 08, 2004 6:03 pm Post subject: |
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I had this problem earlier in the year, and I couldn't find the leak and the Idle wasn't too bad, leak was eventually found at the heater tap.
| Quote: | | well actually the idle probably isn't that great, what effect would this have??/ |
A poor idle will have no 'effect' on your heater controls but it is a symptom of a vacuum leak, as the heater controls are 'powered' by vacuum, a leak anywhere in the system will leave you with not enough vacuum to change the controls. |
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