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do YOU have rubber?
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Discussion Starter #23
Jeeez wouldn't you know it, I parked the car outside at midnight last night and just tried it now... cranky start - but not so bad. Ran it for about 8 seconds, stopped it, then it started fine. It was cooler than the sauna we had going in the picture so I just don't know. Perhaps that solder joint into the BEM has improved things (wishful thinking). I think I'll have to live with it :(
 

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Officially Bored with 347
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Mate i have just one "Q"as far out as is sounds... Is your parkbrake located in the dash or next to the drivers seat??
If its located in the dash by your left knee email me @ [email protected] or add me to your msn msngr if you have it.
 

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Birth, Drift, Death...
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yeah maybe we should use 3 hair dryers next time to get it to fault...

i just thought now, why didnt we just put the hair dryers completely in the car and close the doors on the cords? would have heated up quicker...
 

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do YOU have rubber?
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Discussion Starter #27
Well I did some serious temperature testing today, took the BEM out again and blasted it. Sun was out too and with the doors shut it must have been over 50deg. I must have lost 5kg! The fault was there but results were not conclusive. I'm going to pursue it further.

As soon as I can get my hands on a wiring diagram cheaply, I'll do some serious electrical sniffing, there are lots of wires! I used freeze spray to cool the BEM down too. After some squirting I heard a click and the power antenna went a bit crazy. I'd like to source a replacement BEM for a few days. The suspicion is that the BEM is not allowing the injectors to open correctly. I'll have a look at the injector signals incase Ford missed something.

svo302, handbrake is near the seat, why the odd question?

Happy New Year everyone!
 

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Funnily enuff I often have the same kinda problem its definately the BEM, as mines connected to the handbrake bracket
If it doesnt start i hold the key on & give the handbrake a small whack, sure enuff it starts without any probs.
I dont mind it actually cause it sometimes acts like a secondary kill switch....
But I guess the secrets out now ...
 

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do YOU have rubber?
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Discussion Starter #29
Hmmmm, that's interesting. I may open up a can of smack-down on my BEM next time it happens. See if some ass-whooping makes her behave. Cheers for that!
 

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paulc said:
Hi everyone.


It's had a new ECU, BEM, TFI module, distributor, coil, plugs, leads, ignition lock assembly, fuel pump, Air Flow sensor, injectors & fuel pressure regulator.
Many thanks.

Paul,

I thought you said you put a new BEM in it? or was this only a test one. BEM faulire is very common on ef and el's, so try a new one in it if you can (dont take the risk with secondhand one).

If its not that, heres my other theory.......

You mentioned that the fuel pressure was dropping slightly with the car sitting and engine off. Test the fuel pressure to find out exaclty where the pressure drop is occuring. Take the cover off the fuel pump, connect a bit of hose directly from the outlet (pump) side of the sender unit and the other end directly into the pressure gauge. Turn on key or crank it over to build up fuel pressure. if pressure drops when car is sitting, and you have put a new pump in, then my bet would be on the piece of hose that goes between the fuel pump itself and the steel outlet pipe. Sometimes these rubber hoses have radical bends and will split enough for fuel to mysteriously dissapear and leak back into the tank, but will still allow enough fuel through for normal operation once the engines running.

this MAY also be made worse with the heat and pressure inside the tank.

apart from that, sell it and buy a combi van!
:hippy: :hippy: :disco: :help: :cheer: :shag: :sexy:
 

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do YOU have rubber?
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Discussion Starter #31
PROGRESS!

I sqirted a considerable amount of freeze spray into the BEM today when the car was hot enough to fault. Fired 1st go.

Drove the car for 10mins and then found power windows wouldn't work. I then heard a click-click-click sound; Reaching down, I could feel that something inside the BEM was switching (like a solenoid) causing the sound. 1st click=windows dead, 2nd click=windows worked, 3rd click windows dead etc...

Taking advantage of this opportunity, I stopped the car and started it, fired 1st go. Stopped the car and waited for the next click... tried to start again, wouldn't fire. But wait, this is the best bit... whilst cranking and cranking and cranking, the 3rd click occured and the engine sprung to life! Sounds pretty conclusive to me :):):):):)

Additionally, the Smartlock lite was constantly illuminated as I drove the car home.

I'll get a new BEM and see how that goes.
 

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Shh i'm huntin more power
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Freeze spray and electronics is bad :noNO: :noNO: It's a very old school method of finding heat related faults and poor solder joints that occur when hot. When sprayed on a warm bit of equipment it actually stresses electronic components by the rapid heating and cooling causing just as rapid expansion and contraction which can cause boards and components to fail quicker. In this case it sounds like you've hit the nail the head, so good stuff for finding your gremlin.

Ok, i'm taking my nerd hat off now....
 

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Birth, Drift, Death...
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either that or he just F*cked the BEM and the problem is elsewhere.....

no hopefully that was the problem, damn the ford techs are going to be embarased when they find out the owner of the car has figured out what was wrong when they couldnt...

by the way:
Hmmmm, that's interesting. I may open up a can of smack-down on my BEM next time it happens. See if some ass-whooping makes her behave. Cheers for that!
mate that is some of the funniest writing i have seen in a while, actually did make me laugh out loud!!!!!
 

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replace the power up and fuel pump relays.they are both under the collant header tank one relay is green and the other is brown believe me this is the problem.i have repaired this prob heaps of times
 

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do YOU have rubber?
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2,357 Posts
Discussion Starter #35
Yes, rapid heating and cooling does cause physical stress. But with care it is an invaluable diagnostic tool as you can alter the temperature of components over a wide range in a moderate amount of time to determine how the components respond (as long as you stick within the operating parameters of the components that is!). We even found at work with some of our embedded controllers that you can submerge semiconductors in hot soapy water (we did this to eliminate mechanical faults in neighbouring components) safely. We have done this to perhaps 50 different machines over two years and zero failures. We maintain these machines to component level and a neat trick is to surround suspect components with thin plastic tubing to isolate the freeze-spray and pick the exact part that is faulty.

I told Metro Ford about my findings, they are ordering me in a new BEM. They said that if it didn't fix the problem, they would pay for it and just add it to their inventory. How good is that! I will definitely check out those relays too. The work that they have done on the car so far has been written off as "training".

b.t.w. BEM smack-down was unsuccessful ;)
 

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also recently we had a xr6 that would not start and just crank everytime we went to diagnose the the vehicle would start.eventually the starting prob occured in the workshop we found if the bem was taped with a screw driver while the key was held in the crank position the car would start.so remove the bem took out the circuit board and found a dry solider joint
 

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This is real funny, I read this thread a few days ago and though to myself how anoying a problem like this could be and also expensive!!

Well guess what started to happen to my car over the last 3 days! I have a 96 IL6 EL, 95kms, get 550-600km out of a tank so the car dosent get driven hard. Anyways leaving work on Thursday the car would not start like it usually does it was cranking over for about 3/4sec before it fired. Dindt thing much of it at the time. Yesterday it did the same thing (both these days the car was in the sun). Today (Saturday) car started fine in the morning (cold) and about another 6 times after that during the day (hot). This morning leaving Freo at 1am it wouldnt start, engine wasnt stone cold coz it sat for about 2 hours. It was winding over for about 10sec 3 times and then it fired. I left it to idle for a bit and i noticed the idle speed drop to ~500rpm a couple of times while sitting there for odd 30sec. The car drives fine i cant notice anything wrong with it while driving. Worst thing is as many have mentioned it could be so many different things that are causing the problem! Real pissed off coz i have spent $1200 in the last month replacing odd parts on this car and now this!

What is a BEM??
 

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bem stands for BODY ELECTRONICS MODULE

its basically a computer which controls things like smartlock, door locks, intermittent wipers, electric arieals etc.

It also sends a signal to the ECU (Electronic control unit...aka engine computer) to tell it that the car has the right conditions for starting (like the key is in the right position and no-one has tried to tamper with it). Once the ECU recieves the correct signal, the engine will crank and start.

The BEM is mounted in the area to the left of the steering column, roughly above where the handbrake used to be on eb's.
 

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do YOU have rubber?
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Discussion Starter #39
well XtRmn8, sounds like a rather similar situation to mine. Hopefully this thread can be of some benefit to you. You can drive around with the dash off and the BEM hanging to the left of your feet, that way you can observe its behaviour a little better. There is some general information on the BEM at http://www.fordmods.com/ click on "Smartlock Information". Can't wait until Metro Ford call me next week to have the new BEM fitted! I hope that solves all my problems :)
 

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This morning the car started first go. Its real weired how sometimes it crancks first go and like last night i thought i wouldnt be going anywhere. I recal once when i washed the engine down and water got in the distributor cap and it was the same thing the car wouldnt start, had to wait till it all dried out. Worst thing is you cant trust your car anymore, you never know when it could leave you stuck somewhere! Comes to the point where you wish you could just burn the f#$%ing thing. :nothpy:
 
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