GU Patrol going into limp mode!

hey Matt, That,s exacty whats happening.

Ok no worries,the problem is the turbo.

We have seen this three times now,the VNT (variable nozzle turbocharger) is vacuum controlled and what is happening is the vanes inside that direct the exhaust gas over the turbine wheel become sticky and the vacuum solenoid cannot control the movement so it dumps the vacuum to the VNT canister,hence no boost.Luift the foot everything resets itself and the process starts again.

Are you finding it is happening at the same engine RPM/Road speeds.

Matt

yes mate generally about 3000 rpm, most times when he drops it back to fourth & third for hills.

Its not a cheap fix but a necessary one,pay to get it dynoed with a boost gauge on it just to check it out.

Matt

Thanks Matt, I'll get the old man on to it.

I didnt "relace" the clamps, I replaced them.