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 Post subject: Cruise control
Posted: Mon May 09, 2005 7:35 pm 
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my cruise control seems a bit wierd when it is set and i brake just a little bit i can slow down the car but it dosent click off till i hit a certain point. and sometimes it revs when i apply the brakes???????

 

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Posted: Mon May 09, 2005 8:55 pm 
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check ur brake lights are working.
your brake light switch may have failed.

revs increase because the car is trying to speed up while you're braking.
and the point at which is turns off would be 40km/h as thats when cruise will no longer activate.

 

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Posted: Mon May 09, 2005 9:38 pm 
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Yes it will be your brake light switch, on the EF-EL cruise control system the brake light switch also functions as the cruise control switch. When this switch has failed, appling the brakes will slow the car down, however once you release the brakes, the cruise control will return the cars speed to the set point.

 

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Posted: Mon May 09, 2005 11:50 pm 
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As above or could be brake switch is set incorrectly and it switching too low.
The switch is on a thread and can be wound in and out.

What ever the case, get someone to stand behind the car / position it so you can see the brake lights from the drivers seat slowly apply the brakes and see when / if the lights come on.

Replacing / adjusting the switch is a piece of piss (dispite what ppl are saying in the thread in "flaming"(Thats if it's the same as the on in the eb))

dunno if the factory cruise is the same as my aftermarket, but it disengages at 75% of the set speed, this means at 100 it will disengage at 75. The factory would have a similar setup as a failsafe incase of failure of other systems.

hope this helps

 

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Posted: Tue May 10, 2005 12:01 am 
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Thanks for the info/feedback guys, had a friend with the same problem spoke to him today, his old man fixed it and yeah it was something to do with the brake lights so will probly get him to fix mine.
i thought it was defently broken but seems like a quick fix job.
How do you go about fixing it?

thanks again for the feedback (fordmods is great! :D)

 

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Posted: Tue May 10, 2005 12:54 am 
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need to find this douvlacky
Image

If it's completely faulty then needs to be replaced, if it needs adjusting then just screw it in or out as far as you need to.
to pull it out, locate it in the pedal box where the stop is on the brake pedal, disconect it from the wiring harness (simple clip), and unscrew it from the pedal box.
Hope this helps and i am assuming that all e-series are the same or similar (this switch is out of my eb)

 

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Posted: Tue May 10, 2005 2:24 am 
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Punnisher_42 wrote:
need to find this douvlacky
Image

If it's completely faulty then needs to be replaced, if it needs adjusting then just screw it in or out as far as you need to.
to pull it out, locate it in the pedal box where the stop is on the brake pedal, disconect it from the wiring harness (simple clip), and unscrew it from the pedal box.
Hope this helps and i am assuming that all e-series are the same or similar (this switch is out of my eb)


You'll find thats for a manual... his car is a Fairmont ghia, which i'm guessin isnt a manual :P
i'll put my money on the brake switch or brake light related issue.

 

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Posted: Tue May 10, 2005 2:30 am 
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if you hit the brake long enough (with a faulty brake switch) the car will still disengage the cruise.

 

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Posted: Tue May 10, 2005 2:56 am 
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Happy: is that to do with the brake pressure switch on the master cylinder?
(mines not wired up to that lol)

 

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Posted: Tue May 10, 2005 12:07 pm 
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I'm not sure how it works, never bothered to follow it through and find out...

 

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Posted: Tue May 10, 2005 12:37 pm 
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EFFalcon wrote:
Happy: is that to do with the brake pressure switch on the master cylinder?
(mines not wired up to that lol)
Yes, the switch that is mounted near the front of the master cylinder, with the connector facing the engine is meant to be a backup for the main brake light switch for disengaging the cruise control.

 

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Posted: Tue May 10, 2005 6:23 pm 
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so how do i fix it? thanks for the handy feedback everyone

 

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Posted: Tue May 10, 2005 9:21 pm 
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Punnisher_42 wrote:
need to find this douvlacky
Image

If it's completely faulty then needs to be replaced, if it needs adjusting then just screw it in or out as far as you need to.
to pull it out, locate it in the pedal box where the stop is on the brake pedal, disconect it from the wiring harness (simple clip), and unscrew it from the pedal box.
Hope this helps and i am assuming that all e-series are the same or similar (this switch is out of my eb)


Thats not a brake switch out of a Ef fairmont. The EF-EL brake switch has no adjustment.

snap0964 wrote:
EFFalcon wrote:
Happy: is that to do with the brake pressure switch on the master cylinder?
(mines not wired up to that lol)
Yes, the switch that is mounted near the front of the master cylinder, with the connector facing the engine is meant to be a backup for the main brake light switch for disengaging the cruise control.


That switch has nothing to do with cruise control, its been on every ford with or with out cruise since XD maybe even earlier, that switch on the master cylinder is the brake fail switch! Lights up brake fail warning light on cluster.

 

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Posted: Wed May 11, 2005 12:22 am 
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There are two pressure switches on an EF ford master cylinder with factory cruise installed.

The one towards the middle underside and pointing down is for a brake failure warning.

The one near the front and pointing out the side is for the cruise control and is a backup to the brake peddel switch. This switch must be installed for the cruise control to work and is normally closed so send 12V to the module. When you press the brake this switch goes open and cuts the 12V signal to the module. If your brake peddel switch doesn't work, this switch should cut the cruise control, but i am not sure how much brake pressure is needed to open the switch.

As already stated, check you brake peddel switch (under the dash) by looking for a red glow coming from the brake lights when you lightly touch the peddle (easier if parked with rear towards a wall or garage door.
If the lights don't come on or intermittantly come on or require a firm pedle push to come on, then thisis your problem.

With fords, it seems that this brake check should be done every morning as a matter of course. These switches are not the most reliable and probably should have required a recall and propor fix at fords expense :x

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Posted: Wed May 11, 2005 12:29 am 
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madmax wrote:
snap0964 wrote:
EFFalcon wrote:
Happy: is that to do with the brake pressure switch on the master cylinder?
(mines not wired up to that lol)
Yes, the switch that is mounted near the front of the master cylinder, with the connector facing the engine is meant to be a backup for the main brake light switch for disengaging the cruise control.
That switch has nothing to do with cruise control, its been on every ford with or with out cruise since XD maybe even earlier, that switch on the master cylinder is the brake fail switch! Lights up brake fail warning light on cluster.
Have a read of itchione's reply above - what you're talking about here is the other switch (brake failure) that sits halfway down underneath the master cylinder . . . . .

 

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