inhibitor switch - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 04-17-2006, 12:43 PM
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inhibitor switch

would the inhibitor switch, on my 325i auto , play up and sometime's not allow my car to start, had this problem some time ago, but it vanished, for about six months now it's come back, sometimes will start, sometimes it wont, also can be running and then just stops, turn's over fine but wont start..any help welcome..thank's vet-racer
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#2 (permalink) Old 04-17-2006, 07:38 PM
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Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
Do you have the 13 button OBC?
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#3 (permalink) Old 04-18-2006, 01:38 PM
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souds like a loose relay, check under black plastic coover near afm

cheers,
Frank
e30 parts

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#4 (permalink) Old 04-18-2006, 06:01 PM
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no ..i do not have on board computer...
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#5 (permalink) Old 04-18-2006, 06:03 PM
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thank's what's AFM...
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#6 (permalink) Old 04-18-2006, 06:32 PM
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Quote:
Originally Posted by vet-racer
thank's what's AFM...
Air Flow Mass meter

I always get confused between that and MAF (Mass Air Flow) units

anyways, see this little black cover immediately in front of driver side strut tower ?
well, there's 3 relays in there, main, fuel pump and o2 sensor.

afm it's the silver thing with wire, sitting between rubber elbow and air filter box.


cheers,
Frank
e30 parts


Last edited by fporro; 04-18-2006 at 06:36 PM.
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#7 (permalink) Old 04-18-2006, 06:53 PM
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The difference between AFM Air Flow Meter and MAF Mass Air Flow is that the AFM measures the "volume" of air by a mechanical door (flapper) the MAF measures the actual "mass" and density of the air by measuring the resistance of a heated filament, the more air passing the cooler it gets and less resistance....

Also check your fuel pump relay too. Check your wires and plugs, if they a very old you may want to replace them older wires and enlarged plug gap makes the coil work harder and heat up then short out causing the car to die.
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#8 (permalink) Old 04-18-2006, 08:50 PM
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Quote:
Originally Posted by Starmavin
The difference between AFM Air Flow Meter and MAF Mass Air Flow is that the AFM measures the "volume" of air by a mechanical door (flapper) the MAF measures the actual "mass" and density of the air by measuring the resistance of a heated filament, the more air passing the cooler it gets and less resistance....

Also check your fuel pump relay too. Check your wires and plugs, if they a very old you may want to replace them older wires and enlarged plug gap makes the coil work harder and heat up then short out causing the car to die.
ah, thanks

cheers,
Frank
e30 parts

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