Turbo hesisiation under acceleration
#1
Turbo hesisiation under acceleration
I took this video on my way home from work today. Throttle at 3/4. It seems when I am under load the turbo pressure drops and rpms drop at around 3k-4k.
Is this a wastegate issue? an ECM cutting the fuel to prevent over boosting?
This is freshly rebuild turbo. Maybe noteworthy, I pulled a P0133 code after about 60 miles of driving, coincidence?
Last edited by BrwMstrHRx; 08-18-2015 at 12:18 PM.
#2
#4
#5
so regarding the P0133 code, that's saying your rear O2 sensor can't compensate fast enough for something off with the mixture. Could be an old sensor or vacuum leak or fuel pressure issue, or if your engine is after market tuned, its out of range for the programming. Assuming your sensor is good and you don't have a vacuum or boost leak, you may want to consider installing a spacer ($30 from IPD) that moves the sensor away from the exhaust stream.
#6
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#8
Fixed! I pulled a CBV from a jy V70. I figured I'd try a cheap swap before spending more on an IPD HDCBV. So after the swap, problem solved. I'm holding boost under any acceleration condition. Verrrry nice indeed. I did notice that my diaphragm was not torn, or rotted, and the spring still seemed active. The only thing out of place, to me, was A LOT of oil on both sides of the diaphragm. So maybe a good cleaning wouldve done the trick. Regardless, for anyone not holding boost without vacuum leaks, look at your CBV, that could be the culprit.
Cheers!
Cheers!
Last edited by BrwMstrHRx; 08-22-2015 at 07:01 AM.
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