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Enes, Volvo Master Technician
Category: Volvo
Satisfied Customers: 5557
Experience:  18 yrs+. experience as Volvo & ASE Certified Master Technician.
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My v50 sport starts ok but revs wil not go above 2000rev Sometimes

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My v50 sport starts ok but revs wil not go above 2000rev Sometimes if I turn engine off and restart its ok for a time but will then shut down to 2000rev while driving. I have had a new pedal fitted but prob remains. keith
Enes : Hello and welcome to our web page here my name is***** a Certified Volvo Car Expert Mechanic.I'm going to try today to answer your question.
Enes : what fault codes return
Enes : 2000 rpm. Limit is transmission is going in safe mode
Enes : you can have bad sensor on trans
Enes : I would need that code from before you had or current
Enes : Gas pedal will not fix much problems They don't go bad s much
Enes : Reply when you can
Enes : im offline now but you get update email whrn you reply back and when I update answer you get email to read you don't have to wait

The code that keeps coming up is CEM-3F93 and this has gone on for over 2 years. When the codes are cleared its ok for 2 weeks-or-2 months then returns . The revs go to 2000/2500 but no higher. It was just the same before the pedal was changed. keith

Enes : Problem is not gas pedal most cases
Enes : you must replace all terminals at gas pedal connector volvo has updated terminals for that code if keeps coming back
Enes : so new terminals replace all than check wiring from gas pedal to cem for loose terminals and replace on cem terminals for gas pedal
Enes : do cem reload software
Enes : and check all connectors at cem that they snapped and zip tied
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