after 4 or 5 different jobs, having tried many other things, my mechanic thinks it's my torque converter... im not sure i was wondering if anyone had a better idea ie signs it needs replacing etc..

automatic, has done around 170,000 km, regularly serviced etc;

it vibrates when you accelerate, but the minute you take the foot of the accelerator it stops.. it vibrates/shakes when i accelerate up to a certain speed but stops the second i take my foot of the accelerator. (fades when the car warms up more/has been driving for a long time). so far my mechanic has changed the cv joints/shaft and also a pressure valve.. neither were successful. also i think my MFS needs replacing, could this be the problem?

 

how much was to change the cv joints?

 

[deleted

 

he doesnt seem to think that's the problem because it doesnt vibrate when it's coasting or idling, only when you accelerate.. and it struggles to accelerate a little.. i honestly dont know. what happened with yours?

 

If it only vibrates on acceleration, not while coasting, then it's not in your wheels/brakes. It will be in your drivetrain. It sounds like he's diagnosing properly, at least i also would have changed the parts you mentioned. I rarely (as in never) see bad torque converters, he may be right and you are just unlucky though. Any other trans issues?

 

Its the torque converter, I had a similar issue on a allroad I was working on, it would vibrate upon acceleration. It was a bad torque converter.

 

I am having what sounds like a similar problem. The car shutters if I accelerate quickly. It also is slow to engage a gear when I come to a stop. So if I stop quickly and then try to start again quickly the trans bangs very hard into gear. Lastly if I accelerate hard the trans does not hold its gear but revs very high before engaging fully. The car acts very normal when I don't push it hard. I have dropped the trans pan, replaced the filter and fluid.

 

I would have originally said a bent axle or worn U joint on prop shaft or something, but the tq converter is probably it. You aren't going to find a ton of useful feedback as most people drive manual. Did you get a quote? I'd love to know how much for the part considering it'd have to be straight from the dealer and their 300% markup. I'd be surprised if a lower mileage used trans is not a more (much more) affordable route.

Just to be sure... Your CEL doesn't ever flash does it? I had a cracked spark plug that misfired only when under load which caused the car to "shake" only when on the gas.