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car sumtimes starts??? 

 

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 Post subject: car sumtimes starts???
Posted: Tue Mar 16, 2010 12:53 pm 
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Ride: ford falcon ef futura

Location: adelaide
SA, Australia

hey guys i have a 1994 ef futura and recently its been working fine but sometimes wen i turn off the engine and go back to it bout 20 mins later it wont turn at all. its agot new : starter motor,coil pack,leads,plugs! i had a guy c*m out nd put a voltage meter on my starter motor with the ignition on and he sed there was no power at all. so i took it to the auto electrician and teh plugged some computer device thats comes up with the error codes and yeah nothing came up he was stumped!! he said it could be the smart lock? or even the ecu not sending a signal form the igniton to the starter motor???

any ideas would be appreciatted at the fullest!!!!!! :(
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 12:58 pm 
Getting Side Ways
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Ride: el wagon

Location: melbourne
VIC, Australia

Try thumping the dash just above your left knee as you turn the key to start. It's a common problem with the BCM. Dry solder joints.
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 3:31 pm 
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Ride: 1995 Ford Falcon Gli EF Sedan

Location: Brisbane
QLD, Australia

I have the same problem with my 95 Falcon gli EF sedan,
Thumping the dash whilst turning the key works in my instance, been doing it for about a year now.

Wondering what one can do you fix this?
I wouldn't even know where to start?

Appreciate any suggestions.

Cheers,
Darg.
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 3:42 pm 
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Location: Ballarat
VIC, Australia

You have to replace the module. Im pretty sure its the smartlock module that gets dry solder joints. Its an orange box basically just behind where you hitting it. Dont remember I think theres a couple of screws underneath the dash and itll be free to come out the bottom, unplug and plug a new one in. Hopefully someone else can confirm though if a new smartlock module will cause any dramas.

Eventually the joints will completely disintegrate, so either replace the module, or if you're tech savvy, re solder it all. I found with my ED that it was worse when the car was parked in the sun.

 

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 3:50 pm 
Getting Side Ways
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I don't think it is the smartlock module, I think it is the Body Control Module (BCM) that is the problem. If you trace the wiring diagram, the wire to the starter solenoid goes through the BCM.I think that when it wont start, if you put a test light onto the starter solenoid, you will find that there is no power. As 98_eb_fairmont said, the best remedy is to replace the BCM. I think this can be done w/out taking the dashboard out. Simpler still is to simply thump it into life 8-)
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 3:52 pm 
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creeture3 wrote:
I don't think it is the smartlock module, I think it is the Body Control Module (BCM) that is the problem. If you trace the wiring diagram, the wire to the starter solenoid goes through the BCM.I think that when it wont start, if you put a test light onto the starter solenoid, you will find that there is no power. As 98_eb_fairmont said, the best remedy is to replace the BCM. I think this can be done w/out taking the dashboard out. Simpler still is to simply thump it into life 8-)

So smartlock is the orange box and the bem is the blue box right? Because when I had the dash out of the ED I had everything laying on the floor and hanging by wires and to start and move it around I just flicked the orange box with my finger.

 

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 4:44 pm 
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BCMs come in a few colours, depending on the "series". From memory, top of the line ones, the ones in the Fairmonts/lanes etc. that control the radio antenna and the interior lights, auto aircon and other functions are green (high series) and the GLi ones are black (low series). I'm pretty sure that you need to replace it with the same colour. Yes, I think the Smartlock is orange, but I'm not entirely sure.
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 5:11 pm 
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if its the bcm, and u cant be stuffed changing modules, just run a new earth wire to the starter relay, this is what we done with mine, didn't have time to change the bcm. just remember if you do this cut the earth wire to the relay off completley before you put the new one on because the bcm doesn't like gettin an earth feedback through that wire or something, this is what my mate told me, he is an auto elec so he must know lol.

cheers,
Tomo

 

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 10:31 pm 
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Ride: ford falcon ef futura

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hey guys thanx for the suggestions ill deff be looking into these problems...can i also let u guys know that yesterday wen my car wudnt start a guy from profix used the wrench i have in my car to bridge the voltgae underneath my car near the starter motor does this narrow it down a little?
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 10:40 pm 
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you can strip back two wire going to the BCM and solder them together to fix the BCM problem. done it hundreds of times

 

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 10:41 pm 
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Ride: ED falcon gli - XR6 replica

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it'll be dry solder joints in the back of the BEM (which also deals with smartlock in EB11 and ED that im aware of). as stated before located above the handbrake lever. colours depends on series ei. futura, gli, fairmont, wagon. my mate is an auto electrician and has re-soldered the joints on these half a million times.

turn the key to crank.... if nothing continue to hold key at cranking position and slap the trim above the handbrake, if it cranks over then hey presto theres your problem. VERY common problem

 

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 10:44 pm 
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Ride: ford falcon ef futura

Location: adelaide
SA, Australia

eerrrmmm but my car is a ef and its a normal handbrake though? is the BEM or BCM under my dash still?
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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 10:51 pm 
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yeh sorry same place but handbrake moved, just hit above your left knee as others mentioned. cheers

 

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Soon: paccies, custom centre console

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 Post subject: Re: car sumtimes starts???
Posted: Tue Mar 16, 2010 11:03 pm 
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Ride: ford falcon ef futura

Location: adelaide
SA, Australia

cheers champ and theres me stressing this morning about it all...will do it 2moro nd check it all out!!!
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 Post subject: Re: car sumtimes starts???
Posted: Wed Mar 17, 2010 8:57 am 
Getting Side Ways
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Quote:
hey guys thanx for the suggestions ill deff be looking into these problems...can i also let u guys know that yesterday wen my car wudnt start a guy from profix used the wrench i have in my car to bridge the voltgae underneath my car near the starter motor does this narrow it down a little?



I would say DEFINITELY the BCM. When it plays up you get no power to the starter solenoid.
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