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-   -   Coolant system antics (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/115304-coolant-system-antics.html)

wpoll 08-02-2023 04:55 PM

Quote:

Originally Posted by Bdc101 (Post 1231986)
Wpoll, in the US we did not get the LCI until model year 2004.

Yep - same for the rest of the world. The images above aren't mine (nicked them from another Xoutpost thread) - which is why I pointed out the LCI build date - the years on those images aren't quite correct and probably relate to production years rather than model years. :thumbup:

Sorry for the confusion... but actual date stuff aside, it's a great illustration of pre-LCI and LCI difference. ;)

Oldmactech 08-02-2023 05:29 PM

Hmm, mine is an 03’ the profile looks like the top picture but mine doesn’t have the two sticking up doodads under each light.


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Oldmactech 08-02-2023 05:32 PM

Coolant system antics
 
AUC sensor have any effect on aux fan?

wpoll 08-02-2023 05:33 PM

Quote:

Originally Posted by Oldmactech (Post 1231990)
Hmm, mine is an 03’ the profile looks like the top picture but mine doesn’t have the two sticking up doodads under each light.


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So pre-LCI and it doesn't have headlight washers. :thumbup:

wpoll 08-02-2023 05:37 PM

Quote:

Originally Posted by Oldmactech (Post 1231992)
Question:

What does the 4 wire box that sits on the topside of the back of the fan shroud, passenger side do?


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AUC module - it's an air quality analyser that is used to control the air recirculation when set to automatic.

Oldmactech 08-04-2023 12:18 PM

Connected a replacement fan and after 3-4 seconds it starts up (AC on). Guess I’m gonna watch some bumper take off Youtubes.
Thanks for all the advice!


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Bdc101 08-04-2023 12:29 PM

Glad you fixed it! The X lives to drive another day

Effduration 08-04-2023 06:21 PM

You still have an unexplained coolant leak…did you swab cylinders?

Oldmactech 08-07-2023 08:07 AM

Yes, yes I do….
Disturbed that my low coolant dashboard light came on and it took a good bit of coolant….
No car stuff on my birthday though.


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Oldmactech 08-07-2023 09:40 AM

Ok, pulled the spark plugs (NGK BKR6EGP looks like)
Tops look cooked, #6 seemed a little oily). Will be replacing plugs today-suggestions?

Probed the cylinders with a length of rope and no sign of coolant, tiny oil residue in #6.

I replaced 5 and 6 ign coils with cheap coils and #6 had actually slipped off the spark plug…..get what you pay for I guess.

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