98 V70R hesitation under accelleration

Alabamabricklover · Post by **Alabamabricklover** » 11 Mar 2015, 16:29

I have a stutter under hard acceleration. The wires, cap, rotor, are all fairly new. I, also, installed new plugs right before I made this video.

At the 8s mark, the car shifts and the hesitation comes right after at about 3800-3900 rpms.

Does anyone have an idea about what may be the issue?

Post by **rspi** » 12 Mar 2015, 07:05

A common issue with hesitation during hard acceleration is caused by old turbo tubing that may collapse for a moment. Usually the one on top of the intercooler going ti the throttle body tube.

Alabamabricklover · Post by **Alabamabricklover** » 12 Mar 2015, 09:24

I will replace that and see what happens.

Thank you for the insight.

Cees Klumper · Post by **Cees Klumper** » 13 Mar 2015, 11:56

In my S80's case the issue was caused by a defective TCV (turbo control valve). 5 minute replacement item, less than $100 at the usual suspects parts suppliers. IPD makes their own heavy duty item that has worked well for my Volvos.