How many miles/km do you have on the vehicle? What other maintenance has been done to it? RickHaleParker has made some good suggestions for checks and going along with the intake seems like a good area because you mention the deeper noise on acceleration, which the 3.2 can have with the variable in...

Things you can try. 1. Do a compression test and post the numbers. 2. On the Coil packs. Make sure the surface under the mounting bolt is clean. (The pads around the bolt are on the Coil packs are electrical grounds. 3. Swap injectors 1,2,3 with injectors 4,5,6. 4. Clean the ECM electrical connecto...

Hello ChitownV,

Thanks for the suggestion.

This had been done several times, but no effect

Thanks Rick,
I will do this above and update everyone.

Hello All, Please i need help to resolve these issue on My XC90 2008 3.2. Few months backward I filled up my tank, after a few miles away from the gas station i notice the car was jerking but not that noticable after few drive Check Engine came on with these codes: P0300 P0304 P0306 P0306. P0175 sys...