It is a turbo, auto and has 78K miles on it. I took it to Volvo and they replaced the fuel pressure sensor.The car has since been trouble free for about 200 miles now. The hesitation occurred sometimes and not others so only time will tell if the sensor was the problem. Thanks for your input, I'm fr...

During acceleration the engine starts to loose power for very short periods of time causing the engine to "buck". It seems that the cause is either the coils or the MAF sensor. Is there a way to check these before replacing them? Thanks