1994 e36 320i Coupe - Starter interlock relay Diagnose how? - Page 3

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Thread: 1994 e36 320i Coupe - Starter interlock relay Diagnose how?

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  1.  
    #21
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    Yes, connect upto the wire that goes to the alternator, I'm not sure if you'd have full access to do this with the alternator in place, but you can try it (Just make sure the battery in the boot is disconnected) - The alternator is connected directly to the starter.

    It's all trial and error, we will find out why your car won't start.

    EDIT: And just to clarify, EVERY single time that the car doesn't start, does the starter make a clicking noise ?
    If so, that suggests the wiring from the ignition to the starter is fine... It suggests a power problem from the battery.
    You've already added another earth which didn't help. So it must only be the power getting to the starter.
     
     

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    w4vy (02-08-2011)

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  4.  
    #22
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    I hooked up the positive to where the wire is bolted to the alt under the rubber protection cap and the negative to loads of different places but still not doing anything other than the starter clicking and the starter relay opening and closing but fast, also the fuel pump relay clicking on and off but not as fast as the starter relay which sounds more like a short to me.

    Thanks Button Below, Be a Sport...
     
     

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    #23
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    Quote Originally Posted by w4vy View Post
    starter clicking and the starter relay opening and closing but fast,
    If the starter is clicking, then it should at least attempt to rotate the crank.

    Does your car have a starter immobilization relay ?

    Next thing to try, is running a 12v feed direct to the starter. Like the one that comes from the ignition this time.

    We will start to rule out a wiring issue between the ignition and the starter now.
     
     

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    #24
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    yes the car has a starter immob relay that is the one clicking, is there another normal starter relay ?

    thanks for helping as well chris, I'm on chat btw.

    Thanks Button Below, Be a Sport...
     
     

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    #25
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    Have you still got the inlet manifold off the car?
     
     

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    #26
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    no m8 every thing is back together again barring the wipers, the scuttle panel, the fuel filter cover, the front wheels removed also front and back bumpers are removed and it's up on axel stands at the front still but I don't think any of them are causing the problem do you?

    I had this problem on and off for about a year and thought it was the starter motor on it's way out and one night I drove the car into the garage and the next morning it just clicked and that was it along with the noises I hear from behind the dash inc' starter immob relay and the other noise is like a squelch noise if you know what I mean only more high pitched, anyway so that's when I started with replacing the starter motor only to still have the problem.

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    #27
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    According to the wiring diagrams, the early production '94s had a relay and a "Fuel pump start idenification" relay, and the late production had a Starter Immob' relay which led onto a "Fuel pump start idenification" relay which appears to be inline with the wire from the ignition to the starter.

    Where and what this relay does exactly, I have no idea.

    And I can't make it on chat at the moment as i'm at work, and they would frown upon that
     
     

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    #28
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    You can short the starter motor main lead across to the solenoid plug and if it turns over every time you try it then at least you know you have a wiring issue, you can then start working back.(much easier with inlet manifold off though. )
     
     

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    #29
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    Quote Originally Posted by Ronnie View Post
    much easier with inlet manifold off though. )
    Just don't allow the car to start this way. Remove fuel pump fuse.
     
     

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    #30
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    Quote Originally Posted by Ferret View Post
    If the starter is clicking, then it should at least attempt to rotate the crank.
    On the starter there's 4 wires that connects to it, 2 are thick wires one red which goes into the firewall which I guess goes to the battery and the other is black and goes to the alternator. These 2 thick wires go to the same peg on the starter. (I know right, black for negative on a positive post)

    Then there's a 10mm o ring connector wire and an 8mm o ring connector wire that go to a post either side of the main post. When I bench tested the starter motor I noticed that depending on which of the 8mm & 10mm post I gave a positive charge to, well the 8mm made the starter spin and the 10mm made the starter throw the pin out which would be the clicking I hear when I try start the car so I'm thinking the fault lies with the smaller 8mm wire which is the one that snapped and I had to put on another o ring and solder it.

    My cars production date is 08/1994

    EDIT: soz didn't know about the new chat just been informed and have registered.

    also I hear the fuel pump relay clicking but when I prime the car the pump isn't doing its normal long, I'll say whine but not a bad one lol

    Thanks Button Below, Be a Sport...
     
     

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