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  #1  
Old 09-04-2018, 05:03 PM
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1991 300ce EARLY m104 - ICV and GAS LEAK

While replacing the ICV on my early m104 (with distributor) the hoses leading to and from the ICV tore apart - they were extremely brittle. I put the ICV back in and temporarily taped the hose ends on as I need the car in use - but i do not know the shape of those hoses and I cannot tell from the part photos online which hoses those would be - does anyone have insight?

Possibly related - there seems to be fresh gas on the fuel distributor and around the throttle body - would a failing ICV be related to this gas leak/blowback?

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2017 - 1991 Smoke Silver 300ce Tan Interior
2014 - 1993 Blue 190e 2.3 Tan Interior
2012 - 1988 Blue 300ce Grey Interior
2009 - 1989 White 300e Grey Interior
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  #2  
Old 09-04-2018, 07:14 PM
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IAC hoses (Look at diagram) :

005 IDLE SPEED ACTUATOR TO INTAKE MANIFOLD P/N A1040941082

011 IDLE SPEED ACTUATOR TO INTAKE MANIFOLD P/N A1041410483

032 FROM INTAKE MANIFOLD TO IDLING ACTUATOR P/N A1040941182

Fuel Leak:
Possibly EHA valve cracked and leaking / faulty O rings.
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1991 300ce EARLY m104 - ICV and GAS LEAK-3c2cd1826360122db6f5c7659de3cff0.png  
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  #3  
Old 09-04-2018, 09:25 PM
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Thank you so much - extremely helpful.
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2017 - 1991 Smoke Silver 300ce Tan Interior
2014 - 1993 Blue 190e 2.3 Tan Interior
2012 - 1988 Blue 300ce Grey Interior
2009 - 1989 White 300e Grey Interior
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  #4  
Old 09-08-2018, 10:34 PM
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Location: Southern California
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Here is assembled picture if this helps:



There are 3 hoses. From the IACV there is the S shaped hose that goes to the mustache shaped hose. There is also the small hose from the top of the S shaped hose.
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1991 300ce EARLY m104 - ICV and GAS LEAK-screenshot-2018-09-08-19-32-22.jpg  
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  #5  
Old 09-09-2018, 03:45 AM
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With the parts missing I thought this was a different engine! Very helpful photo - thank you! Those hoses look difficult to replace with the fuel system still attached. I seem to have fixed the hose pictured (to/from) the ICV. The hose that is not pictured in the photo is the one I have on order - that one completely ripped in half.
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2017 - 1991 Smoke Silver 300ce Tan Interior
2014 - 1993 Blue 190e 2.3 Tan Interior
2012 - 1988 Blue 300ce Grey Interior
2009 - 1989 White 300e Grey Interior
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  #6  
Old 09-15-2018, 03:38 PM
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It seems like A104094182 is the smaller hose indicated. Would anyone know the part number for the hose where the green arrow is pointing?


Attached Thumbnails
1991 300ce EARLY m104 - ICV and GAS LEAK-screenshot-2018-09-08-19-32-22-1-.jpg  
__________________
2017 - 1991 Smoke Silver 300ce Tan Interior
2014 - 1993 Blue 190e 2.3 Tan Interior
2012 - 1988 Blue 300ce Grey Interior
2009 - 1989 White 300e Grey Interior
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  #7  
Old 09-16-2018, 03:43 PM
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Join Date: Aug 2017
Location: South NJ
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A1040941182 part 32 on the diagram I attached.
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1991 300ce EARLY m104 - ICV and GAS LEAK-a1040941182.png  
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  #8  
Old 09-18-2018, 02:27 AM
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I ordered A1040941182 and it is definitely not the correct hose - see picture below. I believe I found the correct part: A1040941282.

Attached Thumbnails
1991 300ce EARLY m104 - ICV and GAS LEAK-20180916_235326_1920x1080.jpg  

__________________
2017 - 1991 Smoke Silver 300ce Tan Interior
2014 - 1993 Blue 190e 2.3 Tan Interior
2012 - 1988 Blue 300ce Grey Interior
2009 - 1989 White 300e Grey Interior
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