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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 12-27-2011, 12:31 PM
ekoms ekoms is offline
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Location: AZ
 
Join Date: Nov 2011
Posts: 9
Mein Auto: 95 325is / 01 330ci
coolant leak under intake maifold

hello,
today I was driving my 95 325is from my place to Tucson (90 miles) to visit family. the car didn't overheat or run hot the whole trip, but once I got into town about the third or forth stop light there was steam coming from under the car. I pulled over & opened the bonnet. there was coolant all over the drivers side of the motor under the intake manifold.

are there any common areas it might be leaking from? what should I look for first. I'm away from home so tools are very limited & have no repair manual with me.
also I recently replaced the water pump, t-stat & did a coolant flush. it's not leaking from any of those, as they were the first things I checked.

thank you.
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  #2  
Old 12-27-2011, 12:37 PM
ZeGerman's Avatar
ZeGerman ZeGerman is offline
Warm Leatherette
Location: Seattle, WA
 
Join Date: Mar 2009
Posts: 19,032
Mein Auto: 1998 BMW 328is
Yes, there are coolant lines which run under the intake manifold and go through the firewall to supply the heater core. They are attached at the firewall on a plastic fitting which is prone to cracking with age. You will want to fix this ASAP and not drive the car in its current state. One accidental overheating could kill the motor.
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1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
View my photos: Caught in the Wild
For sale: E30/E36 front sway links
For sale: OEM E36 328 catback

Last edited by ZeGerman; 12-27-2011 at 12:38 PM.
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  #3  
Old 12-27-2011, 01:35 PM
ekoms ekoms is offline
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Location: AZ
 
Join Date: Nov 2011
Posts: 9
Mein Auto: 95 325is / 01 330ci
I found the leak. the fan was rubbing on the 3/8 bleeder valve hose that ran across the top of the rad, a small pin hole leak sprayed coolant everywhere . easy fix.

thanks again.
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  #4  
Old 12-27-2011, 01:39 PM
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ZeGerman ZeGerman is offline
Warm Leatherette
Location: Seattle, WA
 
Join Date: Mar 2009
Posts: 19,032
Mein Auto: 1998 BMW 328is
Ah, gotcha. That's an easy fix, and should only cost a few dollars with parts from a parts store.
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1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
View my photos: Caught in the Wild
For sale: E30/E36 front sway links
For sale: OEM E36 328 catback
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