problem with my VL

[lngflw]

After a good half hour of street driving she wont let me use boost. shes fine when i turn her on but after driving for a bit she starts jumping and makes churning noises. could it be summin to do with the fuel pump or what. Anyone had this problem before?

[harry3]

cant follow what you mean, is it a turbo?

[lngflw]

yea mate shes only running standard turbo. she drives normal for the first half hour till she warms up a bit then when i put my foot down and let boost starts to kick in she jolts forwards like roo hopping till i change gears or back off.

[harry3]

wouldnt be a lose driving belt that expands as it gets hot perhaps?

[prince_dj666]

try yr crank angle sensor
afm
all electrics
fuel pump
plugs
leads
etc etc

most vl/t have crank angle sensor, afm and throttle switch thing as regular faults.