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Drivetrain vibration Ever since I've owned my 240sx, there has been an annoying vibration, especially at lower (2000-3000) rpm in the higher gears, that seems to rumble the whole car slightly. This car has three universal joints in the driveshaft, then 4 cv joints total in the two halfshafts. I bought it used with 115k miles and now it has 130k. The car has never been wrecked. It's not in the wheels or tires, I've replaced them. It's not a big shake, more of a sound. If you have ever driven a car with an aftermarket sunroof with all the windows closed and heard that shuddering sound this is very much like that. Lower rpm (NOT lugging) and higher gears seem to make the vibration worse. If I just coast it is very smooth. If I rev the engine, it is smooth. But when I put it into gear and apply power, there's the shudder. I've also replaced the struts/shocks. Didn't expect this to help, as the problem occurs when the drivetrain is stressed. I've even had the hood off and driven the car to see if the engine is wiggling around, ie- loose motor/transmission mounts. Not the case. It's difficult to isolate but I think it's coming from the middle/rear of car.

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Try your drive shaft common problem for 240sx

Posted on Jun 03, 2009


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