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Re: underneath of vehicle hits on speed bumps
You can Change this Problem by Installing More Firm Shocks. the Shocks that you have are the Factory Shocks Correct???? They are to soft for these Bumps. Let me know if you need anymore Help! Please rate my Response, I need all the Help that I Can get! Thanks!
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I think that is somewhat obvious You stop using a vehicle that wobbles at any speed just from a safety perspective There has to be something worn or loose under the front suspension & possible even the rear If you never work on or have vehicle experience then know the shops you have used for most of your life
Obviously you have a connector which has come partially apart somewhere between the Headlights and the Headlight Switch. Most modern vehicles have several connectors between the Headlight Switch and the Headlights, Start at the Firewall Connector and work forward toward the Headlights making sure all connectors are securely mated. Another remote possibility is that you have fractured the "Low Beam Filaments" in BOTH Headlights. You don't mention how hard you hit the Speed Bump but if it caused the car to "Bottom Out" the front suspension it was a hard enough impact to fracture the filaments. You can use a 12 Volt Test Light at the Sockets for the Headlight Bulbs and see if you are getting 12 Volt power there. If you are in Low Beam position you have fractured the filaments. Check with High Beam too.
I have three 1997 Olds Cutlass's. They do it to! Nothing to worry about. They will do that in response to a bump, or washboard road driven over at a certain speed. The wheel speed sensor on each wheel tells the computer how fast each wheel is turning. If one wheel speed is faster than the other three, as when you hit a bump, the computer thinks it is loosing traction and flashes the light, and may or may not engage the ABS system to even up the speed on all four wheels.
Now if that light comes on, and STAYS on, that is another matter. It will only do that if a wheel speed sensor becomes faulty, and then the ABS light will override the traction light.
It could be because of worn out ball joints, or steering arm bushings. When ball joints wear out, they tend to rest against one end on even pavement, but as soon as you take the load off, such as in a bump, they go "crazy" and start banging against the stops until you reduce speed. If this has been going on for a while, there should be telltale signs on the wear pattern of the front tires. If you take the vehicle to a front end alignment place, they will tell you which parts have excessive play that should be replaced before aligning the front end.
This sounds like a loose connection/bad wire somewhere for the low beam lights. Can't really give you more information without seeing the vehicle, and wiring diagram for the circuit. Usually, things that go on and off when hitting bumps are connection/wiring problems. The fact that one of your low beam headlamps burnt supports this theory. Bad connections or wiring mean lower voltage, thus higher amperage at the bulb, motor or whatever it's running, which makes them burn a lot quicker.