Engine Turbo-charger Problems of Volvo XC70

2002 Volvo Xc70 with transmission problems. Customer states that the transmission is slipping, bucking, and jerking when shifting into lower gears. The vehicle had a significant oil leak from the engine turbo oil return. The headlight and rear marker light would flicker when the consumer drove over bumpy roads.

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My car is a Volvo 2001 awd xcv70 and it was stalling and loosing rpm while traveling at highway speeds, running very rough and accelerating without pressing on the accelerator, for example when at a stand still in traffic. The dealer said that the electronic throttle module (etm) needed to be replaced and that the part was $1,000 plus. They said that the cause was my failure to use premium gas. It was not until after I gave them the go ahead to fix it that I discovered all the other complaints. This morning I found out that they have already installed the new part and are road testing it to see if any of the other diagnostic failures have cleared up. The other kicker is that I had already taken the car to a non-Volvo mechanic that diagnosed the problem as a mass air sensor, oxygen sensor and heat control sensor. Those repairs, totaling 650, did not correct the problem. I can not find too much fault with this mechanic since he was replacing parts that the diagnostic indicated were bad. Now I find out that the diagnostics are all controlled by the failure code for the etm and that those repairs were probably not necessary. More than a little frustrated. The car was unsafe to drive and now I am concerned about the failure of the replacement part.

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