What's this tube for???
Moderators: GRNSHRK, ron, bfons
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- Posts: 68
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- Location: Melbourne, Australia
What's this tube for???
Whilst poking around the engine bay this morning I discovered a loose tube and I'm guessing its female partner. It disappears inside thru the firewall where the headlight adjustment tubes are.
I'm guessing its for vaccum but what does it control?
I'm guessing its for vaccum but what does it control?
Past toys:
1979 Volvo282GT
1988 Porsche 944S
Current toy:
1986 635 CSi
1979 Volvo282GT
1988 Porsche 944S
Current toy:
1986 635 CSi
Re: What's this tube for???
Runs to the interior temp sensor for heater control, under lower dash panel. Connects to one of the nipples under centre of manifold
'85 635csi JPS (RA2-66)
- 86_6series
- Platinum Member
- Posts: 1069
- Joined: Mon Apr 02, 2007 10:08 pm
- Location: West Nyack, NY
Re: What's this tube for???
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3
-
- Posts: 68
- Joined: Wed Feb 13, 2019 4:22 am
- Location: Melbourne, Australia
Re: What's this tube for???
Hey thanks for responses. This might answer a few questions about heater issues.
Past toys:
1979 Volvo282GT
1988 Porsche 944S
Current toy:
1986 635 CSi
1979 Volvo282GT
1988 Porsche 944S
Current toy:
1986 635 CSi
Re: What's this tube for???
Fascinating! Are you able to explain the role of a vacuum pipe in relation to the temp sensor and more generally in relation to heater control?
Phil
__________________________
1988 Highline 635 CSi
__________________________
1988 Highline 635 CSi
- 86_6series
- Platinum Member
- Posts: 1069
- Joined: Mon Apr 02, 2007 10:08 pm
- Location: West Nyack, NY
Re: What's this tube for???
# 10 part
https://www.realoem.com/bmw/enUS/showpa ... Id=64_0467
Page 6413-0
Follow heater regulator- measures cabin air temp (lower left) GN/BK wire to air door control unit. Open and closing.
Also feeds A/C selector switch for heat & A/C. Guessing it opens and closes heater valve and on & off A/C compressor
along with controlling vent flaps.
On page 6413-1 the heat regulator also controls fresh air control unit.
Hope this helps a little.
https://www.millerperformancecars.com/f ... Manual.pdf
https://www.realoem.com/bmw/enUS/showpa ... Id=64_0467
Page 6413-0
Follow heater regulator- measures cabin air temp (lower left) GN/BK wire to air door control unit. Open and closing.
Also feeds A/C selector switch for heat & A/C. Guessing it opens and closes heater valve and on & off A/C compressor
along with controlling vent flaps.
On page 6413-1 the heat regulator also controls fresh air control unit.
Hope this helps a little.
https://www.millerperformancecars.com/f ... Manual.pdf
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3
Re: What's this tube for???
Phil, see below
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'85 635csi JPS (RA2-66)
- 86_6series
- Platinum Member
- Posts: 1069
- Joined: Mon Apr 02, 2007 10:08 pm
- Location: West Nyack, NY
Re: What's this tube for???
jps635
That's a great diagram, where did you find it and is there any more of that style available?
Thanks
Bob V
That's a great diagram, where did you find it and is there any more of that style available?
Thanks
Bob V
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3
Re: What's this tube for???
Bentley manual. There's a few similar type diagrams for various systems. Makes it easy to understand what's connected to what.
'85 635csi JPS (RA2-66)