Quote from: ZSHO on October 12, 2019, 08:00:05 AM
I guess you can always try to (pinch) the wastegate hose leading to the wastegate with locking pliers in order to determine if one of your Turbos are going bad!
If you notice the Boost level is back to normal during this procedure then one of your turbos need replacing and remove the pliers..
I would also try to rule out a plugged CAC.
It's a bit of Trial & error and proceed with CAUTION rule may apply!! Z
Thanks Z. I've been patiently troubleshooting the last week. I've ruled out the TIP and MAP sensors unfortunately because those would have been easy. I took my air compressor and pressurizes the hose leading to both wastegates with about 12 psi and both wastegates moved and I verified there weren't any slow leaks so the hoses and connections are solid. I got both wastegates to physically move however the back one make a slight noise which makes me think it may be sticking.
I do have some general questions I'm hoping someone can answer specific to the Ecoboost. Are the wastegates normally closed or open? I know when the car hits 100% duty cycle on the boost solenoid that I thought it was sending boost to the wastegates to close them fully so the turbos spin up. Since these are pressure actuated that would mean they are open normally? Or am I getting this backward LOL...
Unless the boost solenoid is bad I most likely have a sticking rear turbo wastegate.
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