flachattack |
06-04-2016 05:09 PM |
M45 Occasional Boost Loss
Hi! I have a 1.8 supercharger, the Sebring Timing box and Powercard on my 97. When I roll onto throttle I get boost fine ( goes up to 5-6 psi with 67.5mm pulley). Sometimes it'll stick at 0psi for a split second then jump up into boost as well. However, without fail, if I stab the throttle instead of rolling into it, itll hop up to 0psi and stay there regardless of rpm and throttle position. I can have it floored and it'll feel like it was before the supercharger, yet I hear the whining still. I've gone and checked that all vacuum connections are secure, but I haven't specifically done any vacuum tests. My next thought is the bypass actuator. How could I tell if this is failing? Is it supposed to move the actuator arm when the throttle changes? Anyone have any suggestions on how to track down the cause of this?
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