FemiBoanerges

While driving, vibration starts suddenly and gradually but within 2-3 seconds reaches maximum. There is no associated noise and no abnormal smells. The vibration feels exactly like having a completely flat tyre. As a matter of fact, the first time it happened, I pulled up to check for a tyre blow out. Bringing the car to a stop (no need to switch off the engine) cures the problem completely. Subsequently, the car drives smooth and beautifully until this strange symptom strikes again - usually weeks or months before it happens again. There was a string on this subject in 2004 but with no clear conclusion or solution (e.g. ebrake, front axle bushings etc). Attempting to drive faster when the vibration occurs makes the vibration worse. All four tyres checked and okay. No overheated tyres when driving. This may not be related, but every time that the vibration occurred I had just joined a main highway from a slip road. Has anyone had a similar experience and found a definitive solution. Many thanks Femi

Hi Chubyball I have exactly the same problem with my 2000 LS400. The vibration occurs sporadically. There is no noise. Trying to drive faster makes the shaking worse. Stopping the car and restarting solves the problem. DID YOU FINALLY SOLVE THE PROBLEM? WHAT WAS THE CAUSE? WHAT WAS THE SOLUTION? I look forward to hearing from you. Many thanks Femi :(

For a mathematician, you write very well. Thank you for clarifying this matter. I have just bought a 1991 LS400. I noticed that the key and the car do not 'talk' i.e. no central locking function. Do you know the procedure to get the car and the master key talking again? I have put a new battery in the master key. Femi

I have just bought a 1991 LS400 and have exactly the same problem that you had i.e. intermittently blinking aircon lights then the lights would stay on and the system would work perfectly but might cut out after one hour and come back on again. There is no rhythm or pattern to it. I opened the bonnet today and had a quick look to find the compressor. There are two short wires coming from the compressor that lie on its casing. Are these the wires that you pulled back from the casing? I will give mine a try. Have you had any further problems since that time? Femi