Ford - Explorer :: Cruise Control At 35 MPH - Braking Downhill Shuts Off Engine
Feb 12, 2011
I drive a 2005 Ford Explorer (automatic) with 84k miles on it. Recently when I was driving on cruise control at 35 mp/h down a hill and applied the breaks to make a turn, the engine completely shut off. The lights came on, the power steering went off, the engine had shut off. I pulled over, turned the key off, turned it back on and it started no problem. I drove it for 3 days without problems (and without using cruise control of course), then I took the car to a shop. They ran diagnostics on it, test drove it, but couldn't find anything wrong with the cruise control or the transmission. I don't think they tested this driving downhill as the shop is not in a hilly area. Tonight, I went down the same road again, 35 mp/h in cruise control, slowed down for the same turn, and the engine shut off again exactly the same way it did before. What this could be?
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Curiosity question. I've noticed that on a downhill of a couple miles, especially in "braking" mode or with the cruise control on, the motor/generator and engine are used to keep the speed down and the battery gets charged to the very top quite quickly. That's good!
On a really long downhill, will the motor/generator still be used for braking and the excess electricity discarded to keep from overcharging the battery?
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I like to drive with cruise control engaged but I find I can't do that in my new (well, 182K 2005 6.0L) Excursion. It's holds speed just fine, but if I top a rise and start going downhill - basically when no effort needed to maintain speed - it starts chugging and shaking the whole truck real bad. It feels and sounds bad, can't be good for it (or so I've assumed in my head). It's a real staccato feeling as if fuel is being applied less than a second, stopped, reapplied. Is this something unique to the diesel (my first diesel), an issue with the cruise control (vacuum, electronic?), or what?
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I have a 2004 Explorer with the V6 engine. Twice I have had the engine die while I was setting the cruise control at speeds around 35 MPH. I shift into neutral and it starts right up but it sure startles you when it seems that you can't turn the steering wheel. What causes this?
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Just picked up an Excursion with the V10 and 4R100 (2001). Drove it in to work to day and while on the freeway cruising on cruise control about 60 it seemed to shift or atleast lock/unlock the trans on ever slight downhill you encounter on a city freeway. Just light humps in the road. Does this seem normal? RPM's would be just shy of 2000 then I'd hit a small decline and would shift to 1600 or so then back up when it leveled out.
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My 2001 F250 with 5.4 gasser surges when it rolls downhill when using the cruise control. It does not do that when it is going up hill or on flat level highway. Why it does that? This is only when I use cruise control.
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Twice now, while going downhill hill (steep grade on freeway) my Prius has revved up to over 4,000 RPMs with the cruise control set at approximately 65 mph. The noise of the engine was my tipoff and I immediately had to turn the cruise control off. This just doesn't make sense to me! Seems like this could be a potential problem for those of us utilizing cruise control!!!
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I have a 2012 Hyundai Elantra and have noticed that my cruise control doesn't slow me down when I am going downhill, is this normal?
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The cruise control on my 2013 works as I expected.
However the cruise control on my 2016 Sonata does not.
When driving at highway speeds (65 to 70 mph) in cruise control and the shifter set on "D" (drive) the transmission will down shift to 4th speed whenever I go down hill.
This might be intentional as a way to keep the car from exceeding the set speed, but I have never heard of this and it would seem to place more wear an tear on the transmissions.
Do the down shifting is engineered in or if it is a service problem that I need to have addressed...
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2012 Prius with 10K miles.
One of the features I really like over the '06 Prius is the ability of the cruise control to hold the set speed on downhills (until the battery fills up and it switches to compression braking "B" mode, but that's a different topic).
After taking it in for the 10K mile service, it no longer engages regenerative braking on downhills with cruise control set. This is on the same hills where previously it would hold speed.
Did Toyota do a software upgrade that disables this feature?
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My trusty 1994 Ford F150 is starting to show her age, I think. I'm noticing a few issues:
1 - most concerning to me is she jerks pretty hard when shifting through the first few gears during relatively warm weather. The cold snap has abated the issue for now. Had the transmission fluid checked - mechanic said it's fine.
2 - This is a fun electrical issue. I'm driving down the highway when suddenly the cruise control shuts off, as does the speedometer and the digital odometer. The Tach still works, as do the rest of the gauges. Maybe 10 - 15 minutes later, they all come back on. It's done this a couple times.
3# - Really annoying but very minor; when I push down on the foot feed, there's a bit of a squeak in the engine. I'm guessing it's a tensioner pulley on the serpentine belt, but why it would only happen when I give it some gas?
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My cruise light will activate but won't hold speed, it shuts off when I tap the brakes. I did the self test and it went through complete. All buttons worked. After the test it did not show any blinks which according to the chart shows speed control switch faulty, I replaced the switch and does the exact same thing. The recall was also done.
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I have a 2009 Mercury Milan. Ever since I have had the car I have had a problem with the cruise control suddenly turning off. It is erratic and will happen usually once on a two hour trip on the highway day or night. And it completely turns off - no RESUME. It never puts up any codes that the dealer can see. The dealer will not do anything because they cannot duplicate the problem. They tried once on a short 5 mile drive but they would have to take it on the highway and drive it for at least one half hour to an hour. They said there were no similar problems reported through Mercury. They initially suggested that perhaps I was accidentally hitting the brake pedal but I have been acutely aware of where my feet are when it happens and it is not me. And anyway this would not explain the fact that it turns off completely. My warranty is going to run out in several months and I would like to get this fixed before it does.
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I have a 2003 AWD Pontica Vibe, automatic transition, almost to 100,000 miles, the majority of which are from midwestern highway driving. Last summer on a long highway drive, the cruise control mysteriously shut itself off after maybe 2 hours, and wouldn't hold speed again no matter how many times I tried to reset it. When I stopped for gas and tried it again after restarting the car, it worked fine for months. I figured it need a reboot and didn't worry about it.
But since November the same thing always happens: the cruise control works the first time you set it for anywhere from 20 minutes to an hour, and then it shuts itself off. Any attempts to reset it after that will hold speed for anywhere from 10 seconds to about a minute. The "cruise" light on the dashboard flickers at the moment the speed drops, but doesn't remain off.
I am definitely not touching the brake, and there is no correlation with road conditions or weather as far as I can tell. We took it to the dealer in December to check for electrical problems, but they didn't find any error codes. I'm not sure what the next step is - should we drive it on the highway for an hour and THEN check the codes once it's in a malfunctioning state? Or is there another likely culprit?
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2009 Chevy Malibu. My car's cruise control kicks off at random times. The control on the steering wheel will not re-engage the cruise control. It stops working until some random time down the road when I can finally reset. The tach will jump from 2 to 3 and seems to feel like it is shifting gears. The dealer reads no codes. How do I get this fixed. I drive interstate all week 50+ miles everyday and it is annoying.
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I have noticed a couple times now on my Automatic S that the engine keeps revving an additional 1,000 - 2,000 rpms when I am braking going down a hill. Is this normal? It doesn't occur on flat roads or going uphill, but only downhill. It's almost as if it downshifts when I brake. Not sure if this is normal or not, but it just didn't feel right.
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Cruise control is not working on my 00 Explorer. The horns were not working as well so I assumed the clockspring at first. Upon checking out the underside I found that the horns were not grounding properly. Cleaned up some rust and installed new ones. Good as gold. The cruise is still a problem though. The lights are also out on the steering wheel. I checked all the fuses associated with it and they are all good. What else could be the cause of this. Clockspring still possibly?
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On my in laws 2000 explorer the cruise control does not work. When driving and activating the cruise control (on, then set), the cruise-control dash light comes on for a fraction of a second and goes off again. Tried it at freeway speeds.
Any clue ? I heard there is a separate brake switch for the cruise control and one for the brake lights. The brake lights operate normal. Could it be the other switch ? If so where is this switch ? Under the dash or under the hood ?
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While driving on the highway, the cruise control shuts off and the speedometer stops working. Check engine light comes on. Car continues to run fine.
Five days later, I start the car and the following do not work: clock, intermittent wipers, neutral safety switch, tachometer, temperature gauge, gear indicator lights, rear defrost, windows, and I believe that is all. Car runs and drives fine. Other electrical items working. I check all fuses and only find one burned out - (#1, inside, labeled 'back up lights' meter lights) I replace the fuse and it blows when I start the car again. Take the car to AutoZone and they put it on their computer and it shows one code - P0501 - CVT speed sensor.
Two days later, the car will not start. Turns over strong, but will not start. I have checked the grounds on the transmission and body and they appear to be fine. Battery cables, also.
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I have a 1995 Oldsmobile 98 sedan with engine braking problems. It has the 3800 engine (complete with a slight intake manifold leak, as per the GM custom) and low miles. I recently moved from the midwest to the west coast, where this battleship encountered real mountains for the first time on the road trip west. Driving into Yellowstone NP from Cody, Wyoming I encountered a particularly hilly stretch of US highway that had a steep grade and plenty of curves down the hill.
I took the car out of overdrive and put it down a gear to let the engine braking assist. Nothing happened. The car continued to speed up with no assistance from the engine, even in 2nd, which should have held me at around 45-50. To test this on the next big drop, I started at the top from a full stop, and in first gear. I should have been walking down the mountain, but instead the car kept speeding up to around 40 and 4000 rpms before I relented and shifted up.
Is this a transmission problem? Or would the lack of engine braking downhill but no transmission problems when tooling around town elsewhere indicate something else? Maybe a vacuum leak?
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While driving to Calif. from Ariz., on I 10, dropping down into Indio on a mild grade, at 75mph, when I came to the steepest section the transmission down shifted, rpm's rose and it felt like the engine was keeping the mph at the set speed, by providing more drag which it did. I have had many auto with transmissions and cruise control, been descending steeper grades, and never have had this happen. The vehicle is a 2014 Avalon. It would be a nice feature if it had been designed to do this auto braking, but I don't think that it ia supposed to do this?
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