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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

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 02-19-2013, 10:42 PM
steezysloth steezysloth is offline
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Location: Raleigh, NC
 
Join Date: May 2012
Posts: 39
Mein Auto: 2000 323ci
Exclamation E30 no spark & fuel *UPDATE*

Okay so i posted a few threads down about not getting spark but not much help

New thermostat and housing
All new hoses and gas lines
New main relay
New fuses
New coolant sensors/switches
New flame thrower ignition coil
New battery

So im not getting fuel or spark/power to the coil

Replaced main relay and still no spark

Found out my fuel pump and o2 heater relays are bad...
so im guessing replacing those 2 will fix my no fuel problem haha

But as far as no spark/power to the coil, the car turns over and everything.

Im thinking it is the immobiliser/anti theft system causing me to have no spark
But i have noooo idea where the immobiliser is located so if someone can help me point it out and tell me how to bypass it that would be great

and any ideas anyone else has to why it is not getting spark

1989 325is manual
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  #2  
Old 02-19-2013, 11:07 PM
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AndrewZ AndrewZ is offline
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Location: In Between Dreams
 
Join Date: Feb 2006
Posts: 10,992
Mein Auto: It has two dipsticks
Have you replaced your cap and rotor?
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  #3  
Old 02-19-2013, 11:18 PM
steezysloth steezysloth is offline
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Location: Raleigh, NC
 
Join Date: May 2012
Posts: 39
Mein Auto: 2000 323ci
Well if idk if it is bad, im not at that point of the chain yet, im not getting power to the coil ):
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  #4  
Old 02-19-2013, 11:22 PM
e34crank e34crank is offline
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Location: Perkins ca
 
Join Date: Jan 2013
Posts: 19
Mein Auto: 90 535I,89 735il
Check your DME aka fuel pump relay maby even ecu fried. Idk had the same problem with my e34 there's a whole thread on no start situations on here some where

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Old 02-20-2013, 12:10 AM
steezysloth steezysloth is offline
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Location: Raleigh, NC
 
Join Date: May 2012
Posts: 39
Mein Auto: 2000 323ci
@e34crank Thanks! Im def gonna go pick up those 2 relays tomorrow and stop by the scrap yard and pick up an ECU lol

Ill post back and see what happens....
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  #6  
Old 02-20-2013, 12:53 AM
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Nick323 Nick323 is offline
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Location: Windhoek, Namibia, Africa
 
Join Date: Jun 2012
Posts: 704
Mein Auto: 323i E30 2-door
Do these ECU's have a habit of dying ?
What causes this ?
I have yet to see a Japanese car's ECU die from anything but outside attack !
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  #7  
Old 02-20-2013, 07:49 AM
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hornhospital hornhospital is offline
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Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 14,076
Mein Auto: 1995 318is / 1993 325is
Yes, particularly in cold weather. The solder joints are old, get brittle, and when they get chilled they pull apart just enough to break the connection(s). Reflowing the solder traces with a low-wattage solder iron/gun has saved many a 'dead' ECU.
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  #8  
Old 02-20-2013, 05:32 PM
e34crank e34crank is offline
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Location: Perkins ca
 
Join Date: Jan 2013
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Mein Auto: 90 535I,89 735il
Good luck. Let me know if that doesn't work could even be clogged injectors if you didn't have your fuel regulator on water could have got in your fuel rail and rusted causing some blockage. Happened on a motor I bought off cl

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  #9  
Old 02-20-2013, 07:48 PM
steezysloth steezysloth is offline
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Location: Raleigh, NC
 
Join Date: May 2012
Posts: 39
Mein Auto: 2000 323ci
Okay so i did some more digging today, tried those 2 fuses in a different spot and turns out they are actually fine, so the problem is im not getting power to my fuel pump and o2 sensor heater relay slots. ):

Tomorrow i will pick up an ECU from the scrap yard and see what happens i guess

I removed the fuel lines and held them trying to crank it and no gas comes out im guessing because those relay slots arent getting power ):
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bypass, coil, ignition, immobiliser, relay, spark


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