Friday, October 15, 2010 - 09:00 am, by: Juan Landauro(Enigma)
I used frame-contact lift to service my front brakes on my Soarer 3.0 litre. For some reason I left the car with the front wheels hanging for 2-days. I did the brake service and put everything back accordingly. I took the car for a drive on the motorway and got off at a roundabout (curvy). I pressed the brake (speed around 40 mph) when a big bang sound occurred (just one time). Car was fine during & after the bang. I repeated the event and approached the same roundabout and pressed the brake but no bang. I thought that maybe a part of the front suspension was upset when the wheels were hanging for 2-days, and the bang was an indication that that part (or parts) returned to their normal position.
However, today coming home I had to brake suddenly (speed 30 mph) before turning when that dreadful noise (short duration) was heard again to my discomfort. The noise appears to come from the front. I imagine the noise is the product of something changing geometrical position with a big bang. The actual changed position seems to return to its/their original position when the car is running normally at motor way speed without any bang.
If the brake system is functioning much better than before (good braking) then when the brake is pressed the whole car frame (above the brake level) tends to move forward. This may exert considerable force on the only other part above the brakes which I think are the shock absorber. Could the joint of the shock absorber be moving out of position or temporarily bending and causing this acute banging noise.
Do some members have experienced similar phenomena? Please provide your comments.
Note: I serviced the rear sway bar (new links, and bushes, and rubber grease) and the vibration at speed above 90 miles per hour has diminished considerably.
Friday, October 15, 2010 - 09:27 am, by: Damian Ware(Frozenpod)
The bang sounds could be caused by calipers which are loose or loose wheel nuts, given you have been working in that area I would be pulling off each wheel and inspecting.
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