# Cruise control **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [March 3, 2009, 5:25pm UTC](https://community.cartalk.com/t/cruise-control/27237 "2009-03-03T17:25:37Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![jrr134](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrr134](https://community.cartalk.com/u/jrr134)\ **Post date:** [March 3, 2009, 5:25pm UTC](https://community.cartalk.com/t/cruise-control/27237/1 "2009-03-03T17:25:37Z")
I have a 2005 Mercury Mountaineer Premiere. Once I set the speed on cruise control (which is usually 69 mph on the highway) I hear a high pitched whine. If I bump up the speed to 72 or so it goes away for a short time and then resumes this very irritating sound. Drives me nuts. Any ideas where I should start to remedy the problem? ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [March 3, 2009, 10:32pm UTC](https://community.cartalk.com/t/cruise-control/27237/2 "2009-03-03T22:32:24Z")
It only does this with the cruise control on? Or does it also do it if you leave the cruise control off and control speed manually? ---
**Author:** ![jrr134](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrr134](https://community.cartalk.com/u/jrr134)\ **Post date:** [March 3, 2009, 11:18pm UTC](https://community.cartalk.com/t/cruise-control/27237/3 "2009-03-03T23:18:02Z")
It only does it when the cruise control is “on.” ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [March 4, 2009, 12:11am UTC](https://community.cartalk.com/t/cruise-control/27237/4 "2009-03-04T00:11:30Z")
Well, I’ve been thinking but the only possibility that really comes to my mind is some kind of electrical noise/interference from the control circuit. But I’m also assuming that this is a cable controlled cruise control as all of the ones I’ve ever had are cable controlled. I supposed one other possibility might be if there is some kind of vacuum controlled system in which case you might get some kind of whistle out of a vacuum leak. Can you compare the whine to anything else - e.g. does it sound electrical? or like a whistle? Can you give some idea of where you think it is coming from? So I think the short story is that I’m clueless (apparently) - though at the very least I’ve given your Q a couple of bumps and there are other people up here smarter & more knowledgeable than I. ---
**Author:** ![jrr134](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrr134](https://community.cartalk.com/u/jrr134)\ **Post date:** [March 4, 2009, 12:35am UTC](https://community.cartalk.com/t/cruise-control/27237/5 "2009-03-04T00:35:34Z")
Thank you for your concern and thoughts. I would describe the whine like one that you would hear when taking a hearing test. Very high pitched and never wavering. One solid high pitched whine. I could also describe it as what it sounds like when your ears are ringing. No – my ears are not ringing 🙂 When I turn the cruise control off, it stops right way. I am always dealt strange problems it seems. I have yet to run this by by my local mechanic, but I plan to do so very soon. So far I have just turned the radio up to block the sound out. Too lazy to turn the cruise off and use my foot. ---
**Author:** ![useless123](https://avatars.discourse-cdn.com/v4/letter/u/848f3c/32.png) [@useless123](https://community.cartalk.com/u/useless123)\ **Post date:** [March 4, 2009, 1:04am UTC](https://community.cartalk.com/t/cruise-control/27237/6 "2009-03-04T01:04:58Z")
I do believe cruise control has a vacuum input, possibly vacuum leak somewhere there. ---
**Author:** ![jrr134](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrr134](https://community.cartalk.com/u/jrr134)\ **Post date:** [March 4, 2009, 2:42am UTC](https://community.cartalk.com/t/cruise-control/27237/7 "2009-03-04T02:42:47Z")
When it finally warms up outside (due maybe this week)in the Midwest, I will do a little searching around under the hood and check to see if any vacuum lines are loose or whatever. I surely hope that is all it is. Not sure how much a new cruise control would set me back. You folks’ assistance has been more than appreciated and I thank you all very much! ---
**Author:** ![JayWB](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@JayWB](https://community.cartalk.com/u/JayWB)\ **Post date:** [March 4, 2009, 3:40am UTC](https://community.cartalk.com/t/cruise-control/27237/8 "2009-03-04T03:40:16Z")
That annoying whine is the siren on the police car behind you. Can’t help with how to remedy that … ---
**Author:** ![redtag](https://avatars.discourse-cdn.com/v4/letter/r/c2a13f/32.png) [@redtag](https://community.cartalk.com/u/redtag)\ **Post date:** [March 4, 2009, 3:49am UTC](https://community.cartalk.com/t/cruise-control/27237/9 "2009-03-04T03:49:54Z")
seldom is cruise control require replacement. It is usually the brake switch solenoid for it failing, or some utilizing a vaccuum and a hose leaks etc. Do not let any one sell you a complete cruise control