mercredi 24 septembre 2014

Weird happenings/loss of power

Hello everyone,



Yesterday i took my 2005 scenic 1,5 dCi (78 Kw) on a small trip on the highway about 150 km. On the way there everything worked well, engine was pulling ok, cruise control working no problem whatsoever.

On the way back however it started doing something weird . I was cruising (manually) at about 130 when all of a sudden it was like i released the throttle(and the current consumption showed 0.0), i downshifted and everything went back to normal.I tried to set cruise control but it gave me the check cruise control message. Some times "electronic fault" appeared also during the phenomenon.After a couple more moments like this i thought about lifting the throttle and applying pressure again and it worked, everything goes back to normal.The engine is snappy and does not give any signs of ageing.

I checked the car with a diagnostics guy but not with a clip but a delphi system. It outlined df051 speed limiter/cruise control signal outside upper limits and df 127 brake switch circuit 1.

Is it possible for the cruise control to affect the car behavior even if it;s not active ? because the car behaves like i would gave turned the speed down on the cruise control and it engine brakes.

Thank you.




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