I have a 96 Brava with 69k miles on the clock. When accelerating or under power I am experiencing vibrations that appear to be related to engine, transmission or gearbox. These vibrations appear between 40 & 50 mph and at about 60 mph. There is a particularly bad spot at about 48mph.

If I take my foot off the accelerator when the vibration is manifesting itself it goes away. My immediate suspects are worn engine or gearbox mountings or some form of transmission problem and I am not excluding ecu issues either (the car also seems to be exhibiting the symptoms listed in another thread relating to temperature guages & injection warning lights).

btw I have had wheels balanced and tracking checked, all OK.

If anyone has had similar experiences (and the cures) this info would be gratefully received.

Is your car standard?
I get something similar at low revs and it comes from my exhaust which was badly fitted (soon to be sorted). Probably of no use to u but hey better than nothing.

99 brava 100 sx

I had about the same with my Brava 1998. I still was in my warranty period so that was no big deal fixing it.

At first I thought as well something wrong was with my Engine Rubbers
or something similar.

I appears to be a problem with the bearing of the gearbox.

I don't know how you call it in English but, there are two axes going into the gearbox. The bearings including the axes are worn down
and creating some play between axes and bearings causing the whole assembly to vibrate when speeding at a certain speed. That's why you won't notice it when letting loose of the pedal(but remainign speed). The engine will not torque causing the effect (Defect) not to appear.

Hope it will help

Greetz

Ricco from the Netherlands.

Ricco

Thanks for the information. I was thinking along those lines and will be getting my car into the garage over the next few weeks and will ask them to have a look at that. I bought the car second hand and it has a warranty, so hopefully they will cover the cost!

Can you confirm, was it the inner CV joint bearings that needed to be replaced on your car? I think they call them "tripod" bearings.