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  #11  
Old 11-03-2023, 05:11 PM
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Help me out.

Where do these two electrical connections go?
The long top one. Is it routed somewhere through the intake?

Is the middle hard pipe coming from down low the diff vent tube? It curves under the intake.

It was filled with distilled water. The water will test for big leaks. Plus dilute any green coolant left in it. It will be pumped out. Blue OEM coolant will go back in.

I'll have to remove the TB to install the lower manifold bracket 17mm nut.
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Last edited by X5chemist; 11-04-2023 at 08:52 AM.
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  #12  
Old 11-07-2023, 09:09 AM
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Been a long time since i did that job... sounds like you dodged a bullet!! Good work for catching it in time and doing the job right (i.e. replacing everything!)


To answer your earlier question, if the cold weather CCV was working for you for so long (with no caked-up mayo) then buy another one of those. Even in Texas I would suggest the cold weather version.



Did you figure out where those connectors go yet? The three-pin one might be for the mass air meter, but I might be wrong. I can go look later if you haven't got them figured out.
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  #13  
Old 11-07-2023, 11:57 AM
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Great job on this and the pics make this a nice read.

How did you go with the wires?
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  #14  
Old 11-07-2023, 12:32 PM
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I think the 3 pin connector is the crank sensor which I think goes to the connector box octopussy. The short (front) one out of the injector harness is the vanos solenoid. The middle one is the intake air temp sensor.

The plastic hose (with the clip) gets clipped to the bottom of the evap solenoid.
there should also be a plastic hose with the same kind of clip (I think) that goes from the evap solenoid (clips) to the bottom of the intake.
The pics are a bit confusing because I think they are making the part you are focusing on much bigger then the rest. The evap solenoid looks the size of the vanos solenoid!

Pictures work even better if you take some before hand!

The bottom pic I think is the connector for the IAC motor.
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Last edited by 80stech; 11-07-2023 at 12:55 PM.
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  #15  
Old 11-07-2023, 03:35 PM
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80'stech,
I've reviewed several videos. No one make a reference to the long three prong connector. Every intake video does show it under the intake. Down low but no reference to where it's connected. One video for 1 second showed it to the octopus wiring harness. I took a video pic to check when I work on it tomorrow. The bottom one is likely the IAC connector. Those connections didn't come off until the intake was removed. It's why I missed putting tape on them and their locations. I should have all the info needed to put it back together. I'll do a little more clean up too. The delay now is a Bosch starter replacement.

Bdc101,
During the winter, it only had goo at the oil cap. Mostly for not being run long enough. Short city trips don't help. After this round of maintenance, I have no hesitation about driving far away from Austin. It's first voyage may be a 800+ mile round trip!

Thanks for y'all's help and replies!
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  #16  
Old 11-07-2023, 05:25 PM
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Did you replace the CCV? If not, did you check all the vacuum lines? If you had mayo under your cap it is possible (not certain but possible) that you have a lot more in the vacuum lines.
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  #17  
Old 11-07-2023, 05:37 PM
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Yes, the CCV, hoses, intake large hoses were all replaced. I'll split apart the old CCV for inspection. Goo was only seen on the oil cap during the winter. All the lines replaced looked goo free. Oily but clean. I'll use low air pressure to check lines.
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  #18  
Old 11-07-2023, 07:18 PM
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Wow, sounds like you are golden then! I had mayo under the oil cap, but when I replaced the CCV I found many of the vacuum lines were full of mayo too. The vacuum distributor on top of the intake manifold was almost completely clogged. That was the year I bought the car, at about 13 years/95k miles.
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  #19  
Old 11-08-2023, 07:58 PM
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The mysterious three prong long wire does to go the octopus. It's plugged in now. The other mysterious 6 pin end goes to the TB. All connectors are identified. The starter has been removed. The Bosch replacement shipped today. The dropped TB bolt was fished out with a magnet. It was on the skid plate foam. So the only piece missing is the expansion tank lower big clip. Luckily, I remembered a spare was in the parts tool bag. A replacement with a handle was ordered. Once the shroud and fan are on, the final big hose will go on for pressure testing. Upon passing, the intake will go on. It should be up and running next week!
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  #20  
Old 11-08-2023, 09:14 PM
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For vehicles with Auxiliary heating S536A=No
05 Hose f engine inlet and water valve 64218381387
For vehicles with Auxiliary heating S536A=Yes
05 Hose f engine inlet and water valve 1 64218380126

From: https://www.realoem.com/bmw/enUS/sho...diagId=64_1116

Which one of these do I need? Mine does have dual side temp HVAC.
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