davej Posted March 15, 2014 Report Share Posted March 15, 2014 Hi all having major problems with my lupo sdi. When trying to maintain a steady speed there will be a slight power surge than it will drop back and moments later it will happen again, making it impossible to maintain a steady speed!! The car idles ok it only happens when diriving. My brother a former mechanic has changed the fuel filter, air filter, new injectors, and done a diesel purge in an attempt to solve the problem with no luck. The current thinking is it may be a faulty throttle position sensor or crank shaft position sensor .Anyone got any ideas ?? Its getting to the point when i'm seriously thinking of giving up and sending it to the breakers! thanks dave Quote Link to comment Share on other sites More sharing options...
Skezza Posted March 15, 2014 Report Share Posted March 15, 2014 Clean the EGR and inlet manifold. Then come back. Quote Link to comment Share on other sites More sharing options...
davej Posted March 15, 2014 Author Report Share Posted March 15, 2014 thanks will try thats Quote Link to comment Share on other sites More sharing options...
Dblock Posted March 16, 2014 Report Share Posted March 16, 2014 Can you check throttle position sensors with VAGCOM? Quote Link to comment Share on other sites More sharing options...
davej Posted March 17, 2014 Author Report Share Posted March 17, 2014 thanks Quote Link to comment Share on other sites More sharing options...
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