Recently I have a message on the panel saying speed limited to 80 mph and the car will not go faster then 80 mph


Asked by jeffsbuick Oct 29, 2012 at 10:15 AM about the 2006 Buick Lucerne CXL V6

Question type: Maintenance & Repair

car does not go over 80 mph. The display panel shows a message when I reach 80 mph "speed limited to 80 mph". Owners manual says something about a magnetic balance?

8 Answers

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Sounds like a governor.

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Magnetic Balance is suspension component, if deployed it automatically stiffens the suspension when you make a hard, real hard turn, to keep the car from rolling from too soft suspension. I could find nothing about why it would govern your car to 80, unless while the M-B is on it does that, but I really looked and found no reference to the two being related

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OK I found it. The governor, or speed limiter, shows up and limits the speed of the car to a certain speed in a particular gear. It will not allow the engine to over-rev. Make sure you are not in 3rd gear and I bet it will go's not a safety device, it's to prevent destroying your engine by going too fast in a lower gear

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I found a owners manual and on page 3-63 It says- This message will display when your vehicle speed is limited to 80 mph because the vehicle detects a problem in the speed variable assist steering, magnetic ride control, or automatic leveling control systems. Have your vehicle serviced by GM dealer. - Any tips for me based on this info?

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OK then the two are related. I found the same thing when you pointed it out, but I did get information about governing it because of gear. I must have been looking at the wrong car, my apologies. It will always say take it to dealer, but if you can find a reliable competent mechanic it will cost you far less. Sorry I misled you. I don't recall which site had that information, evidently another car.

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No worries DavidH25 - Thanks for your help. I had a blow out on the drivers side rear tire and the tread came off and ripped about a 15 inch square piece of the plastic rear bumper that wraps around the corner of the car right behind the tire. A few days later I noticed the 80 mph thing. Do you think that has anything to do with it?

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It might. If the tire coming apart like that, doing damage to your bumper, it may well have set off some sensor re. the mag balancer. Too much of a coincidence it seems to me.

Dawn Robinson

My Buick Lucerne 07 stumbles when crankes and has very little power.

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