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Help Needed: ED Cruise Control 

 

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 Post subject: Help Needed: ED Cruise Control
Posted: Sun Dec 18, 2005 7:03 pm 
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My Cruise control has never been working ever since I got the car. About all I can do with it is switch it on and off. Can someone tell me some common problems that may help me diagnose the problem? The car is a 8 cyl.

 

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Posted: Mon Dec 19, 2005 9:33 am 
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Mine has failed in my EA a few times. Different car i know, but probably the same setup???

Pop the bonnet and check to see all the vacuum lines are connected. On the EA there is one right near the firewall on the right hand of the engine on mine that keeps popping off...
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Posted: Mon Dec 19, 2005 10:36 am 
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Pop the wheel off Fordz, the metal thing it uses to make a connection dries out the grease on it or something.
I got a similar problem in the Sprint, just too lazy to fix it.
On turns it off, but set doesn't work.
You hit off, and it doesn't turn off, then you hit off again, and it sets... :P

 

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Posted: Mon Dec 19, 2005 9:06 pm 
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Steady ED wrote:
Pop the wheel off Fordz, the metal thing it uses to make a connection dries out the grease on it or something.
I got a similar problem in the Sprint, just too lazy to fix it.
On turns it off, but set doesn't work.
You hit off, and it doesn't turn off, then you hit off again, and it sets... :P


mine dosen't do that. Somehow i think my problems a bit bigger then a few faulty connections... :cry:

 

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Posted: Mon Dec 19, 2005 9:20 pm 
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90% percent of these problems are vacumn related.

I would start by checking the vac connections at the brake switch, t-section (on firewall to the right of the brake booster when looking from front of car) and connections at Vac pump (passenger side behind windscreen washer bottle) and cable actuator other side of car fromt he Vac pump.

Quite often these connections come off or the vac line perishes meaning the system will not work.

If you can't find an obvious leak then remove the actuator from its installed position (but still connected up), set the back of the car on axle stands and try to activate the cruise. See if the actuator does anything at all, it should suck the bladder in when working.

Other option could be the combination switch. The boss contacts on the combo switch do go dry and seize meaning no contact with the BOSS, but that usually means that the system won't fire up at all! I had one of mine seize, system would not even turn on. Replaced the combo switch and everything worked great!

 

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Posted: Mon Dec 19, 2005 11:16 pm 
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philaddis wrote:
90% percent of these problems are vacumn related.

I would start by checking the vac connections at the brake switch, t-section (on firewall to the right of the brake booster when looking from front of car) and connections at Vac pump (passenger side behind windscreen washer bottle) and cable actuator other side of car fromt he Vac pump.

Quite often these connections come off or the vac line perishes meaning the system will not work.

If you can't find an obvious leak then remove the actuator from its installed position (but still connected up), set the back of the car on axle stands and try to activate the cruise. See if the actuator does anything at all, it should suck the bladder in when working.

Other option could be the combination switch. The boss contacts on the combo switch do go dry and seize meaning no contact with the BOSS, but that usually means that the system won't fire up at all! I had one of mine seize, system would not even turn on. Replaced the combo switch and everything worked great!


thanks mate. I suspect its vacume realted as well. I know i have a vac leak in my heating/ventalation system some where. I have just replaced my combo switch with a NOS one, but haven't tried to set the cruise since fitting it, but i'll give it a shot. Don't wanna get my hope up to high though!

 

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Posted: Tue Dec 20, 2005 1:17 am 
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Have you checked the switch on the brake pedal, it could simply need adjusting.

 

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Posted: Tue Dec 20, 2005 5:33 am 
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Sturmovik wrote:
Have you checked the switch on the brake pedal, it could simply need adjusting.

Then his brakelights would be on constantly as well, you'd think that would get noticed.
As a sidenote, if you blow your brakelight fuse, the brake will no longer turn off your cruise control...
Kinda worrying for a second when you're burning down a freeway offramp.

 

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Posted: Tue Dec 20, 2005 12:43 pm 
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Steady ED wrote:
Then his brakelights would be on constantly as well, you'd think that would get noticed.
As a sidenote, if you blow your brakelight fuse, the brake will no longer turn off your cruise control...
Kinda worrying for a second when you're burning down a freeway offramp.


That is true of the later EF/EL setups which are all electric, but the EA-ED ones have a seperate brake switch for the cruise. It dumps vacumn and has an electric switch to disable the cruise. The brake light switch is entirely different in the EA-ED to the cruise brake switch.

Sturmovik wrote:
Have you checked the switch on the brake pedal, it could simply need adjusting.


The cruise brake swtich could need adjusting and it is one area for a possible vac leak, although I haven't come across this happening before and would suggest a bigger problem with your brakes than the problem with the cruise control!

 

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Posted: Tue Dec 20, 2005 5:32 pm 
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philaddis wrote:
Steady ED wrote:
Then his brakelights would be on constantly as well, you'd think that would get noticed.
As a sidenote, if you blow your brakelight fuse, the brake will no longer turn off your cruise control...
Kinda worrying for a second when you're burning down a freeway offramp.


That is true of the later EF/EL setups which are all electric, but the EA-ED ones have a seperate brake switch for the cruise. It dumps vacumn and has an electric switch to disable the cruise. The brake light switch is entirely different in the EA-ED to the cruise brake switch.


Just to clarify that: If my brake light fuse is blown, the first I usually know of it is when the cruise no longer works.

Which is why in an EF/EL if the cruise is down the first thing to do is check the brake light fuse. :D
So the only way to burn down the off-ramp is with your foot on the loud pedal.. :lol: :lol:

 

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Posted: Wed Dec 21, 2005 5:24 pm 
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philaddis wrote:
Sturmovik wrote:
Have you checked the switch on the brake pedal, it could simply need adjusting.


The cruise brake swtich could need adjusting and it is one area for a possible vac leak, although I haven't come across this happening before and would suggest a bigger problem with your brakes than the problem with the cruise control!


As the cruise has never work since he bought the car its possible that the previous owner may have fiddled with the switch. So easy to check, first place I'd be looking.

Fordz when my EA Cruise stopped working it was a dirty electrical connection on the vacuum pump. Also check condition of rubber bellows on actuator and condition of cruise cable.

 

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