No Boost On My Celica Gt4 St205

[pikey009]

hi can anyone help me please! went to drive my car back from my army camp and it had been working fine in the morning. obviously i let it warm up before i give it any kind of boost, at least 1/4 up the temp guage. the car was warm and i put my foot down. there was hardly any power with the boost going to 0 wich is vaccum pressuer i believe. theres a strange whining noise aswell.

ive had the turbo off and its all fine, there was however a little oil in the induction pipe but not much. ive checked all the vaccum and boost hoses and they seem fine. in a nutshell im running a motec m4 pro ecu with 1.1bar boost, 3inch exhaust from the turbo with 2.5inch restrictor so its not overboosting and a few other bits but theyv all been on for at least 6 months with no problems.

so all i can think of is maybe the actuator or a sensor or something. can anyone shed any light or give me any contacts please thanks

[john905]

have you checked the exhaust turbine on the turbo as they are a common fault for snapping off

[martin1810]

have you checked the exhaust turbine on the turbo as they are a common fault for snapping off

Try blowing into the actuator vacuum hose. If you can you've got an air leak.

[PHILGTS]

check the waste gate actuator. sometimes they pop off. this happened to me once

[pikey009]

check the waste gate actuator. sometimes they pop off. this happened to me once

pop off?

[Fawbs]

what base you on mate?

[PHILGTS]

check the waste gate actuator. sometimes they pop off. this happened to me once

pop off?

it happened to me in my 850, the actuator rod popped off of the waste gate. it was a really easy fix, just shortened the actuator 1 and a half turns and popped it back on. hasn't happened again since.

[pikey009]

imphal bks in york m8

[Leeky]

Whining?

Sounds like turbo bearing to me...

but check first for a boost leak as even a dying whining tubro should make more than 0 boost.

[jimmy b]

Hello..I've just bought gt4 same issue...ie no boost at all..new refurbed turbo,new de cat pipe,K& n induction kit...all std block etc..new gaskets all round genuine from my dealer...turbo is spinning fine..but no boost...