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not sure if wastegate/boost controller is working.

NZM.031

By NZM.031,
in Engines & Forced Induction

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NZM.031 Grand Master

NZM.031

Posted
Posted

hey all,

on my 95 gtst (ser2 motor)

should i be able to move the actuator rod by hand?? should it be plumbed into the vacuum (after throttle body) or pressure (before throttle body) side of the intake piping?? its got an aftermarket HKS pipe to the throttle body, dunno why its there.

on 1bar it was going fine, then all of a sudden when i'd put my foot down it would make a crazy sucking noise, really loud. cant see/hear any vacuum leaks or boost leaks, but i cant get it on the dyno very easily to check under load. it pops and missfires on 1bar, so i wound it down and it started to do it again after a while, now its doing it on 7psi, if i stomp the throttle it goes ok, but if i lightly accelerate it feels like somethings holding it back. its boosting but not really accelerating.

no its not clutch. its not free revving. i thought it might be coils. its missfiring a bit now, but it could also be a leak, im getting some replacment coils to check with, but im worried it wont be that simple. i have already replaced the plugs.

cheers

Linton

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