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Old 02-01-2007, 03:21 PM   #1
Smoked
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Default Vacuum Leak?

I've noticed of late that when accelerating up hills, my interior fan will loss its ability to stay on face outlet and will revert to demister. As soon as the heavy acceleration stops, the fan returns to the correct outlet.

Do I have a vacuum problem or is this normal?

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Old 02-01-2007, 04:15 PM   #2
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I think this is normal. If you have the heater on, and put your foot down, it turns itself nearly off, so your car isnt so sluggish. Also does the same with the aircon.
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Old 02-01-2007, 09:59 PM   #3
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Sorry my friend but you have a vacuum leak somewhere. The most common on Series II and III is the switch block above the radio.

See if you can find someone to check it out for you.
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Old 03-01-2007, 09:33 PM   #4
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Hmmmmm. Kinda coinsides with having got the factory deck taken out. Thanks for that
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***Coming Soon: Clear Side Repeaters***
Quote:
Originally Posted by The-ShowStoPPa
...dont get me wrong this 3.8v6 is pretty special, it does come with the popular shake rattle and roll option and the auto compliments this with the ever popular snap crackle and pop feature
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Old 03-01-2007, 10:31 PM   #5
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I have the same problem after about 3 or 4 runs at the drags. Goes away after about 20 minutes though.
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Old 04-01-2007, 02:51 AM   #6
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It seems to occur quite frequently. every time i accelerate hard, the fan just cuts to demister immediately. Getting quite annoyed with it.
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2001 AUII Forte (LPG)
K&N Air Filter
Tickford Air Intake
***Coming Soon: Clear Side Repeaters***
Quote:
Originally Posted by The-ShowStoPPa
...dont get me wrong this 3.8v6 is pretty special, it does come with the popular shake rattle and roll option and the auto compliments this with the ever popular snap crackle and pop feature
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Old 04-01-2007, 10:45 AM   #7
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Quote:
Originally Posted by Tech Trainer
Sorry my friend but you have a vacuum leak somewhere. The most common on Series II and III is the switch block above the radio.

See if you can find someone to check it out for you.
I'm afraid Tech Trainer is 100% correct, when I removed my centre fascia I had a hell of a time putting the vacuum plug in, when I eventually put it in I thought all good until I drove to Sydney and on the way up noticed the a/c working intermitently especially during acceleration.
Had a feeling that was it as I remember the long thin tube behind the switch snapping off when I re-installed it and thinking it will be fine, unfortunately you will have to replace to whole vacuum switch as it's impossible to glue/weld back on.
Part no. for my series 3 AU is 10-13686, hers a pic and you can see where it's circled is where it snapped off.

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Old 04-01-2007, 09:17 PM   #8
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How much is the part?
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K&N Air Filter
Tickford Air Intake
***Coming Soon: Clear Side Repeaters***
Quote:
Originally Posted by The-ShowStoPPa
...dont get me wrong this 3.8v6 is pretty special, it does come with the popular shake rattle and roll option and the auto compliments this with the ever popular snap crackle and pop feature
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Old 04-01-2007, 09:23 PM   #9
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Don't know, I had a spare module :evil3:
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Old 04-01-2007, 10:45 PM   #10
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$87.60 Ford Cranbourne
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Old 05-01-2007, 01:17 AM   #11
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uf u r handy with some plastic welding u can fix it urself, otherwise some superglue may do the trick too.
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