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E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 09-30-2012, 10:50 PM
Hoser121 Hoser121 is offline
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Location: Duncan
 
Join Date: Sep 2012
Posts: 2
Mein Auto: 325E
Question 325e with no Sparky

So i got this 1986 325e given to me by my neighbour. He says it ran fine for years but they parked it one time for six months and then it wouldn't start,it cranks fine. I did some poking around and found that the coil is not making spark...it has power but obviously the ground circuit that controls the spark is not doing it's job because when i apply a ground to the coil manually and then remove it .....it makes spark.
Question: Is the ECU the only thing that controls the ground to the coil or is there another relay? My Haines wiring diagram isn't very good but it does show a "Speed Control Relay" as part of the timing circuit .....where is this relay?

Also, this model has two Crankshaft sensors located on the bellhousing whose resistance i have checked and found to be 1050 Ohms on both and infinite to ground. I have been trying to take them out to have a look at and maybe even replace but I`m having a bugger of a time getting them out. Remove allen key and pull...right??.....wrong!! They're pretty stuck.

Any help would be appreciated.
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  #2  
Old 10-01-2012, 10:39 AM
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hornhospital hornhospital is offline
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Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 14,893
Mein Auto: 1995 318is / 1993 325is
You missed a couple of steps:

Soak the screw and sensor body with penetrating fluid (like PB Blaster, Kroil, etc.)
Wait for as long as you can stand it, but at minimum, an hour.
Remove Allen screw
Spray with more penetrating fluid
Wait some more
When you finally feel lucky, carefully grip the sensor top and try to gently twist it
If/when it breaks free, remove it

Good luck.
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  #3  
Old 10-07-2012, 08:22 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,625
Mein Auto: E23;E30;E38;E32;E34 +
If the sensors test good (which they seem to) I would not worry about removal. I would start checking relays and fuses. Get a spark the go for fuel system if it does not start.
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