Wiring diagram under the intake manifold? (528i)

[stukreit]

Has anyone r&r'd the intake manifold? I took it off to replace
the plastic water lines directly under it. I need help reattaching the
10-odd connectors there. Turns out there's no clear documentation
on this and the connectors are anonymously 2 and 3 pin modulars.

Btw, both hard lines were completely weakened and cracked where they
enter the engine. The minor water loss was simply going to continue
to get worse and worse. I'm surprised that more people aren't
dealing with this as our e39's approach their second decade and
are deep into their second 100k miles.

Stuart
Palo Alto

[Bmw540san]

respective end. You shouldn't have problems reconnecting them. If there are similar ones you should always mark them before disconnecting.
You may also end up with extra connectors that were not used from factory due to changes in model years.
The rubber lines you're talking about aren't really common problem, although you're right, age and heat will eventually create a problem



1998 BMW 540i 6 speed
Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
Staggered 18" style 32 OEM wheels
3.15 open differential
Remus exhaust
AFE CAI with improved heat shield
Z3 shifter
VDO oil pressure and temperature gauges in place of headlight/fog switches
Powder coated valve covers-satin black
CDV delete
Debadged
AEA DRL module (aftermarket daytime running lights)

1997 BMW 528iA
Alpine white, premium package, prod. date 04/97, single VANOS
Staggered 17" style 32 OEM wheels
Debadged
AEA DRL module
Custom made sun blinds for rear seating area

2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

Garage aids:
Direct Lift Pro Park 8
Campbell Hausfeld 28 gallon oil lubricated air compressor
Newair ACP-1400H portable air conditioner and heater
Auto Enginuity scan tool with BMW enhanced option
Actron 9135 scan tool-for quick readouts

[stukreit]

And no, I cavalierly removed connectors thinking that there'd be
documentation to get me back, but its worse than the old days,
because there doesn't seem to be color coded wires anymore, or if
there is, its very well hidden in the weatherproof boot. Not like
the old days. I may need to go find a wreck to go photograph.

[Eurodavid]

BMW540san,

This may sound ignorant, but which plastic water lines under the manifold is stukreit referring to? I have had my manifold off on my 1996 528i (as you all well know) and am I sitting here trying to figure out what he is talking about when he is saying "plastic water line".

Eurodavid

P.S. stukriet, I know this is after the fact, but when I did mine, I took 2 mins and put strips of paper w/ numbers on them (taped) so I knew which connectors went where. Doesn't help you now, I know, but next time it pays to slow down a bit and mark things. I know this sounds crazy, but just start plugging things in where it looks like they went (and keep track by markings). The EGR stuff is really the only thing you should have a problem with as all those connectors look the same. At that many miles, the other connectors have a natural settled in place where they went & which connector they went into. Besides, lol, you'll know what's what when starting the car and/or begin seeing the immediate idiot lights (or codes being thrown).

[Bmw540san]

now that he's probably mistaken it for plastic.



1998 BMW 540i 6 speed
Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
Staggered 18" style 32 OEM wheels
3.15 open differential
Remus exhaust
AFE CAI with improved heat shield
Z3 shifter
VDO oil pressure and temperature gauges in place of headlight/fog switches
Powder coated valve covers-satin black
CDV delete
Debadged
AEA DRL module (aftermarket daytime running lights)

1997 BMW 528iA
Alpine white, premium package, prod. date 04/97, single VANOS
Staggered 17" style 32 OEM wheels
Debadged
AEA DRL module
Custom made sun blinds for rear seating area

2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

Garage aids:
Direct Lift Pro Park 8
Campbell Hausfeld 28 gallon oil lubricated air compressor
Newair ACP-1400H portable air conditioner and heater
Auto Enginuity scan tool with BMW enhanced option
Actron 9135 scan tool-for quick readouts

[stukreit]

Hose #6, #8. I have a picture of how badly decomposed they were
at the double-o-ring interface to the block:

http://realoem.com/bmw/showparts.do?model=DM63&mospid=47585&btnr=11_2638&hg=11&fg=35

closest thing to a diagram. I'll try to annotate:

http://realoem.com/bmw/showparts.do?model=DM63&mospid=47585&btnr=12_0988&hg=12&fg=28