Hi to all, and I hope I'm doing this first post correctly.
I've read many posts on here about vibrations, and even though close to my nightmare, they're not quite the same. I just bought a 32 roadster in July, and have noticed a vibration that starts at 45 mph and disappears at 75 mph. It is a pulsing spaced at 1 seconds intervals, and it starts at the firewall, and heads to the back under the seat. I have run the car up to 55 mph and put it in neutral, and the vibration is gone. I have also left the car in second gear and taken it up to 55, and no vibration. The cars sports a Jag rear end, and at 75 mph it only turns 2700 rpm, and at 55 it is 2000 even. The tires have been rebalanced, and the motor and tranny mounts are fine. It has been brought to my attention that the stall converter might not be right ( I know nothing about stall converters), and if the stall is to high, it could be a problem because the car generates little rpm. The car is like new, and only had 5200 miles on it. It just bugs me that this is the only problem it has, and unless you drive at 40, you experience it every day.
I've read some posts on here, and a lot of guys have done a ton of things to find the vibrations. This one, after the above tests, seems to definately be an rpm (engine) related issue. Any, and I mean ANY help you can give will be appreciated. Thanks in advance, GW
I've read many posts on here about vibrations, and even though close to my nightmare, they're not quite the same. I just bought a 32 roadster in July, and have noticed a vibration that starts at 45 mph and disappears at 75 mph. It is a pulsing spaced at 1 seconds intervals, and it starts at the firewall, and heads to the back under the seat. I have run the car up to 55 mph and put it in neutral, and the vibration is gone. I have also left the car in second gear and taken it up to 55, and no vibration. The cars sports a Jag rear end, and at 75 mph it only turns 2700 rpm, and at 55 it is 2000 even. The tires have been rebalanced, and the motor and tranny mounts are fine. It has been brought to my attention that the stall converter might not be right ( I know nothing about stall converters), and if the stall is to high, it could be a problem because the car generates little rpm. The car is like new, and only had 5200 miles on it. It just bugs me that this is the only problem it has, and unless you drive at 40, you experience it every day.
I've read some posts on here, and a lot of guys have done a ton of things to find the vibrations. This one, after the above tests, seems to definately be an rpm (engine) related issue. Any, and I mean ANY help you can give will be appreciated. Thanks in advance, GW