Its alive! m30 swap!

[Doughnut]

Black goes to Green wire in the c104 under the dash. Just run a wire from the c101.

[flawdaboi407]

where under the dash? near the glove box or behind the cluster?

[flawdaboi407]

i found a connecter with three wires near the glove box... green, black, and yellow with a white stripe

[flawdaboi407]

no luck yet. I really need to get my tach working. help please. i have a motometer cluster

[Jean]

318i harness:

#1 - BL : Alternator
#4 - BR/VI : Coolant temp sensor
#6 - GN/GE :
#7 - R/VI : Fuel pump
#8 - SW/GE with another small SW/GE : Starter
#10 - GN : Coil
#16 - SW/BR : Oil pressure switch
#17 - WS/BL : Diagnositic port.

e34/e32 harness:

Pin 1, BU goes to the alternator. Comes from the Instrument Cluster "charge indicator" light. BU in the fuse box.
Pin 2, GN/YL comes from oil lever sensor. It is BU/BK in the fuse box and runs to the static oil level active check control unit, which is the same as the oil level light.
Pin 4, BR/VI comes from the coolant temp sender unit. It is BR/VI in the fuse box and goes to the Instrument cluster temp gauge.
Pin 5, BR/GN Oil pressure switch. Runs to instrument cluster oil pressure light.
Pin 6, GN/WH goes to the O2 sensor heater relay. Gets power from fuse 9 and in the fuse box is colored GN/YL.
Pin 7, GN comes from the ignition switch and goes to the Start Input, in the motronic unit and it also goes to Pin 15 on the coil. In the fuse box it is colored GN.
Pin 8, WH/BK comes from the motronic unit "present fuel rate output". Is YL/WH in fuse box and runs to Fuel Economy Gauge in the bottom of the tach.
Pin 9, BK goes to the ECU Engine speed output. This is BK in the fuse box. On the E28 this actually should be the connected in C103.
Pin 10, BU comes from the oil level sensor. It is VI/GN in the fuse box and goes to the active check control unit as the dynamic oil level light.
Pin 11, WH/GN comes from Pin 7 of the diagnostic connector. Is WH/BU in the fuse box and goes to the Service Indicator Processor.
Pin 12, GY comes from the ECU and is the trigger for the "Check Engine" light control. In the fuse box it is BR/BK. This wire is not used on the E28, since there is no check engine light.
Pin 13, GN/VI comes from Pin 87 of fuel pump relay. Is VI/RD in fuse box and runs to Fuse 11.
Pin 14, BK/WH comes from motronic unit "Speed Signal Input". Is BU/YL in fuse box and goes to the Speed Input of the Instrument Cluster.Pin 15, BK/GN comes from Pin 30h on the coil. In the fuse box it is BK/GN and runs to the unloader relays.
Pin 16, WH/BK comes from Pin 6 of diagnostic connector and is used in the SRS system. In the fuse box it is WH/BK and is said to be not used.
Pin 18, BK/YL is the starter trigger and comes from in the car. It is also BK/YL in the fuse box. It also runs to Pin 11 of the diagnostic connector.
Pin 20, RD/YL comes from Pin 87 of the main relay. It is RD/YL and goes to power the ABS Hydraulic Unit.
_______________________________________________

m30/e30318i
1/1
4/4
13/7
18/8 tie small bl/yl wire into the same connection.
7/10
5/16
11/17 Is the diagnostic port.
9-> Black wire in glove box above ECU.

Just comparing your configuration with what I did on mine..

I used this graph and also have 6 going to 6, and looks like you are missing that?


Can you explain the reason behind your small bl/yl going to the 18/8 junction?

What are your thoughts on Pin 14 from the b35 side?

[Jean]

Black wire on that 3 pin connector is tach, yellow/white is mpg, green on my car starts the car, if the green wire is not connected car cranks but won't start.

Did your swap crank/start with just these:

m30/e30318i
1/1
4/4
13/7
18/8 tie small bl/yl wire into the same connection.???
7/10
5/16
11/17 Is the diagnostic port.
9-> Black wire in glove box above ECU.

[flawdaboi407]

I mean tie the small black/yellow wire into the same connection. I think theres two on the 318i side.

[Good & Tight]

no luck yet. I really need to get my tach working. help please. i have a motometer cluster

It's been awhile but I think the tach wire is a thin white wire from the back of the cluster.

[flawdaboi407]

I got it working. Jean was right the small 3 pin connector near the ecu. Its the black wire. What is the stock rev limit on a 91' e32 735i m30b35? Im reving to 7k. Is the tach off?

[Jean]

You probably need to switch to a late model cluster with m20b25 coding plug... did you also hook up the wire for MPG?

Can you also clarify this "18/8 tie small bl/yl wire into the same connection.???" ?

[JMil86]

The black looks awesome, good work! Mine has a small exhaust leak right now right before the cat, sounds like a damn monster.

[flawdaboi407]

I finally drove it!!! Feels good. Pulls ok.. I have a s2.93 diff right now. I need to get a s3.73. But its nice.

e30.de mounts pos III
92' e32 m30b35
84' getrag 240 from the ol m10
m10 flywheel
spec stage3 215mm clutch
85' 325e driveshaft
stock 84' 318i shifterrod shortend
e28 radiator with e28 535i upper, lower hose
m10 longer coolant sensor 2pin and e32 m30 smaller coolant sensor

[chadthestampede]

I finally drove it!!! Feels good. Pulls ok.. I have a s2.93 diff right now. I need to get a s3.73. But its nice.

I had a 3.73 lsd and it's nice, but I might consider going a bit lower if you're going to be driving it a lot. It seemed a little rev happy to me, but that isn't all bad...

[flawdaboi407]

Anyone having overheating problems? I have a small pusher fan... its like 12". I got it from some v6 gm at the yard. I dont think its cooling much. Should I take the themostat out? I do live in florida...

[Jean]

While driving or sitting? Mine stays just under 1/2 mark while driving w/o a fan. And at the 1/2 mark with the aux fan going while sitting.

Try bleeding it, maybe there is still some air in the system.