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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 01-13-2013, 12:30 PM
E30949/909 E30949/909 is offline
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Location: Pomona
 
Join Date: May 2012
Posts: 101
Mein Auto: 1990 325IC
Un bypass heater core

In the process of hooking back up heater. Was wondering what hose's hook up to what pipe on the firewall?
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  #2  
Old 01-13-2013, 03:52 PM
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hornhospital hornhospital is offline
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Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 13,814
Mein Auto: 1995 318is / 1993 325is
You didn't take them off? So you don't know where they go..... look on realoem.com and study the diagrams of the heating and ac system. That's where the hose connection diagram will be.
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  #3  
Old 01-14-2013, 08:18 PM
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Tkaczuk Tkaczuk is offline
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Location: Amish Country
 
Join Date: Aug 2011
Posts: 651
Mein Auto: E30, Rabbit GTI
Why would you want to do such a thing? No heat to defrost your windows.
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  #4  
Old 01-22-2013, 02:28 PM
dropframe dropframe is offline
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Location: Castaic CA
 
Join Date: Dec 2009
Posts: 4
Mein Auto: 1990 325i
Heater Connection

Inlet is the bottom one.
Outlet from heater is top one.

Now I need to know the ID of the hose so I can remove the bypass thermometer and connect the hose back together using a connector. Just need to know what size connector to buy.
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  #5  
Old 01-22-2013, 09:24 PM
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_Ethrty-Andy_ _Ethrty-Andy_ is offline
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Location: Humble New Zealand
 
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Mein Auto: E34 Touring AC Schnitzer
have you determined why it was bypassed in the first place and fixed the problem? usually the pipes on the side of the heater box, but sometimes the heater matrix (like a small radiator) leaks. these cars are 25 years old now
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  #6  
Old 01-23-2013, 10:31 AM
dropframe dropframe is offline
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Location: Castaic CA
 
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Mein Auto: 1990 325i
The bypass was a recall fix to prevent heater core blow-out in an over pressure situation. I can live without it. I just need an easy way to accomplish it.
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