Cruise control problem - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 09-09-2005
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Cruise control problem

I have an intermittent cruise control problem. I turn the cruise on but when I press the set button, the cruise control light the on the dash flashes briefly and the criuse won't engage. After a few attempts it will work. Othertimes it will work just fine.
What could the problem be? Thanks
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Old 09-09-2005
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Most likely a problem with one of the two switches which can disengage it. The BOO (Brake On/Off) switch under the dash on your brake pedal, or the infamous brake pressure switch on the master cylinder (brake master cylinder). I believe there is a clutch switch also on manuals if they are so equipped.

I say infamous since we have the same TI switch that can cause fires in other models. However, they are fed by a high current circuit and ours is fused for a lower current and is unlikely to be a hazard.

You'll probably just have to troubleshoot the two switches to look for signs of intermittent operation, grounds, opens, etc.
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Old 09-09-2005
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Thanks, I'll check out those switches asap.
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Old 09-09-2005
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Also, have a good look at the connector that goes into the servo and make sure its not messed up -- half plugged in, mudded up or whatever. Clean it up if so. I suppose it could be a problem also.

Last thing would be the steering column harness. Tilt your wheel to a different angle and see if the problem changes. I've heard of all kinds of goofy stuff from the steering wheel harness before on tilt-wheel vehicles.
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Old 09-09-2005
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Quote:
Originally Posted by n3elz
Also, have a good look at the connector that goes into the servo and make sure its not messed up -- half plugged in, mudded up or whatever. Clean it up if so. I suppose it could be a problem also.

Last thing would be the steering column harness. Tilt your wheel to a different angle and see if the problem changes. I've heard of all kinds of goofy stuff from the steering wheel harness before on tilt-wheel vehicles.
the truck has never seen mud
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Old 09-09-2005
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Well on the older Rangers and stuff there was a way to check it. I don't know if you still can.

Put the key in the ignition and hold the on button on your cruise control then turn the key to the on position and then release the off button then you have five seconds to hit the on button. then hit resume then cost then set/accel make shure you do it in this order. For every button you hit the speed control light should flash once for every button then your gas pedal should go to the floor and come back up.

If you hit the set/accel button and the speed control light flashes 2 times you have a defective brake pedal position sensor or a bad clutch pedal positon sensor or the ciruit is defective. 3 flashes - Brake deactivation switch is open or circuit is defective. 4 flashes - Vehicle speed signal is out of range or circuit is defective.
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Old 09-10-2005
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Wow, that's pretty cool if its on our newer ones too. I'd never heard of that!

I'm going to give that a try on mine sometime as well, thanks.

And Zach: what do you mean his truck has never seen mud? Isn't it illegal to own a truck and not take it in the mud?! I'm sorry, I'm going to have to report him -- when I get back from the mud in Wharton...
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  #8  
Old 02-17-2009
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so the button trick worked for me. I got three flashes. Now I just have to figure out how to fix it. Any ideas?
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  #9  
Old 02-18-2009
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Sure thing and thanks for searching!

Three flashes condemns the Master Cylinder brake pressure switch, which is the one subject to all the Ford recalls.

Do this: Disconnect the Brake Master Cylinder pressure switch.
Straighten a hefty paper clip and use it to jumper the two pins on the connector you removed. Insulate it with tape so it can't short out and drive it, engage Cruise.

If that works, you need a new pressure switch. Get it from Ford, so it will be the better model, not prone to the leakage/fire issue (the Recall).
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  #10  
Old 02-22-2009
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I probably need a new sensor, but everything works fine in the morning or after the truck has been parked for a long time. It will work fine the first time I drive, but after that, I get nothing.
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