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A friend of mine has an R33 GTSt 97 model, I drove it the other day and it seems to bogs down once it reaches 2000rpm then the rpm increases very slowly. as if something is holding it back.

he changed fuel filter. and the turbo seems to be boosting fine.

I was thinking the throttle body maybe dirty, what do you guys think?? any ideas

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vendetta...that signature would have to be one of the most rediculous things i have read on a car site. makes you look like like an idiot before people even get a chance to judge you...

on the topic of the thread, it could be the AFM or even the air filter if it is dirty and not enough air getting through. Also maybe injectors dirty - run some injector cleaner through before pulling things apart in case its something small. try fiddling with the throttle polition sensor (there's a thread on it) as well as this could be the problem.

Waz.

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  • 3 months later...

we took everything apart and the rubber hose coming from the turbo to the pod filter was loose we tightened it but still. when driving it i feel like there is too much air going in or something.

it goes a bit better but still it still feels abit ristricted in power. we changed the spark plugs, cleaned the afm, changed the ecu .

next step is changing the coil packs. any other suggestions.

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i still think its a boost leak

check the zaust manifold... sometimes they can crack

but i dont think ive ever heard of a standard one cracking

could also be loose from the block or a gasket is blown somewhere.... check both sides of the equation.... but if its when its on boost id say 90% chance its a boost leak or something similar ahmed

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took everything on the right hand side of the engine apart and put it back together, I noticed there is a minimal amount of oil in front of the turbo but there is no shaft play or anything. and defenitly there is no air leak cause i checked everything

the car has improved but still i feel like the engine is restricted its not as free as it should be. tomorrow we'll have a look at the fuel side of things (fuel rail, injectors)

anyone have any other ideas??

I read something about the o2 sensor sometimes becoming faulty where is that located and can that be the problem ?

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