Off throttle "bump"

[Auraraptor]

When I am cuising at 75mph on throttle and I lift off, I feel this light two stage bump in the drive train. Feels almost like a hard shift. It happens again when I gently apply the gas. No matter how gently I apply it, I feel it.

Thoughts?

[Auraraptor]

..a bump to explain the bump...

[peter91118]

this happens in my moms 99 volvo v70. i brought it to a mechanic and he said that it was the MAF. i dont know how to fix it but does it happen at any other speeds?

[MisterPootieCat]

750iL? Sounds like the drive shaft center carrier bearing. Do you hear a nice thump on hard acceleration?

[Strahan]

I'm afraid I don't have an answer, but oddly I have the same problem at the opposite time heh. If I'm cruising on the highway and floor it it shifts hard and sorta 'klunks'. It doesn't really sound like a metal klunk per se, but klunk just seems appropriate. Definently not a warm-fuzzies kind of sound.

Good luck, hope it's not something major!

[Auraraptor]

750iL? Sounds like the drive shaft center carrier bearing. Do you hear a nice thump on hard acceleration?

Yup. Thanks for the info, I will have it checked out when I have more time. Is this a hard DIY if you have access to a lift and a decent set of tools?

[jhedgy]

there is no hard DIY with a lift and a good set of tools :)

[roys740]

hmmmm. Having a lift is half the problem. A lift makes most under neath DIY's easy. Sorry could'nt resist. I want a small home garage lift for my garage so bad.:stickoutt

[Md750]

there is no hard DIY with a lift and a good set of tools :)
you're right...that's why i LOVE having access to one:D