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Car Forum / Chevrolet / Chevrolet Malibu / March 20082001 Malibu cruise control problem
Anyone have a solution to cruise control not staying on. It will initialize OK, but quits/turns off erratically and often. > Anyone have a solution to cruise control not staying on. > It will initialize OK, but quits/turns off erratically and often. You might want to check is you have any vacuum leaks. "Ted" <> wrote in message news: On Feb 23, 11:01 am, "Russg" <> wrote: > Anyone have a solution to cruise control not staying on. > It will initialize OK, but quits/turns off erratically and often. You might want to check is you have any vacuum leaks. OK, I can do that with my ears, listen for hissing sound. I notice there is no vacuum line to the cruise control module. Thanks > "Ted" <> wrote in message news: > On Feb 23, 11:01 am, "Russg" <> wrote: [quoted text clipped - 7 lines] > cruise control module. > Thanks This is sometimes caused by a brake pedal switch which is marginal or inaccurately adjusted. It can also be because the brake pedal sometimes does not come up all the way. Any of these can cause the switch to activate and shut off the cruise control like it does when you press the brake pedal. Of course, it can also be caused by intermittent contact in any of the cruise control wiring. Don Young "Don Young" <> wrote in message news: > "Russg" <> wrote in message news: >> "Ted" <> wrote in message news: [quoted text clipped - 17 lines] > > Don Young Makes sense, Don. I tried to see the brake switch, but it is really up in there. Maybe I'll try again. There are probably at least two switches, unless the same switch operates the brake lights as well, I don't think so. I took the engine compartment cruise control module out once and looked inside. It looked clean in there, saw nothing that could be the problem. I was thinking there might be slack on the cable that goes to the throtle body, but there seemed to be none, there was a little on the accelerator cable. > "Don Young" <> wrote in message news: >> "Russg" <> wrote in message news: [quoted text clipped - 28 lines] > goes to the throtle body, but there seemed to be none, there was > a little on the accelerator cable. Cable slack would be very unlikely to have any effect on your problem. There are probably two brake pedal switches, though they might be combined in one physical housing. Get a mirror about 6 inches across and either a good flashlight or a flourescent trouble light in order to see well under the dash. You can point the flashlight into the mirror if it is easier. Don Young Make sure its not teh brake light switch. If it quits and won't re-engage, lift the brake pedal with your toes, and re-try the cruise. If it works, The brake lifght switch needs cleaned, adjusted, or serviced in some manner. For the "check vacuum leak" crowd GM hasn't had a vacuum servo cruise control since the late 80's > Anyone have a solution to cruise control not staying on. > It will initialize OK, but quits/turns off erratically and often. "I'm Right" <> wrote in message news: > Make sure its not teh brake light switch. > If it quits and won't re-engage, lift the brake pedal with your toes, and [quoted text clipped - 3 lines] > For the "check vacuum leak" crowd GM hasn't had a vacuum servo cruise > control since the late 80's I've tried to pull up on the brake pedal when it won't engage, it doesn't seem to effect it. I've tried slowing down, speeding up to re-engage, no luck. Today I looked at the two switches at the top of the brake lever and the flat metal that the two switches work on. They are little buttons that go 'out' when the brake is pushed. There is a plastic panel that has to be moved to get at the switches, and even then, the switches are about impossible to work on. I didn't see any play or obvious problem with the switches and I didn't try to unplug one of them to determine which was for the brake lights and which for the cruise control. I suspect the cruise control module in the engine compartment is the problem. I've taken it out and looked inside where the cable goes in to it. There are plastic gears in there is about all I was able to determine. Thanks for the tips. |
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