November 23, 200421 yr my impreza is playing up most of the time it boosts to 14psi but occasionally it will only boost to 8psi has anyone any ideas cause it is annoying?
November 23, 200421 yr my impreza is playing up most of the time it boosts to 14psi but occasionally it will only boost to 8psi has anyone any ideas cause it is annoying? Some more information on your car would be helpful. Year, model designation (WRX, WRX RA, WRX STi....) Also, is it only when in a specific gear? Keith
November 23, 200421 yr Author Some more information on your car would be helpful. Year, model designation (WRX, WRX RA, WRX STi....) Also, is it only when in a specific gear? Keith its a wrx 1992 the problem exists threw out every gear the car is an import, i have had the coil packs changed, a regular full service. i am not sure what else i can tell you
November 23, 200421 yr Sounds like you need to have your wastegate examined. The gate itself is inside the turbo, but the valve controlling it is mounted across the outside of the turbo. A metal "bellow" with a rod going through it.
November 23, 200421 yr I'm not familiar enough with that car, but what is the boost pressure supposed to be? In other words I'm not sure if it's overboosting sometimes, or under boosting sometimes. Either way it sounds like something with the wastegate control. Have you ever driven the car with the windows down while this happens? I'm wondering if maybe you have an intermittant exhaust leak before the turbo that would cause it not to build up enough boost. Just throwing things out there to think about. Keith
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