My S70 will intermitantly go into limp mode and the motor will run very rough. It will run like that for a period of time then run fine. Sometimes I will just let it sit for a while and when I start it up again it will run fine. I felt the accelerator run at a certain RPMs even without my foot on the peddle. Engine analyzer gave me the following:
P1610 - Immobilization system malfuctioning
P1620 - Injection pump (Throttle Position switch)
P0220 - Throttle pedal position sensor / switch B
Need all the help I can get,
Thanks
Mike
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