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Thread: Bucking bronco. Vacuum problem?

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  1. Bucking bronco. Vacuum problem? 
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    dwklingbeil
    dwklingbeil is offline Stalled
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    Default Bucking bronco. Vacuum problem? – 09-12-2019,09:17 PM
    Codes 16492 sensor g71 f96 signal too high. And 17963 charge pressure Max exceeded. The b5 1.8t a4 quattro. It's bucking and totally cutting off power after over boost. It only has 68k miles so I doubt the vain actuator is stuck open. I've heard faulty two way vacuum valves can mimic faulty n75 and stuck actuator. I need to know where these infamous valves are.

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  2. Re: Bucking bronco. Vacuum problem? 
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    Crasher
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    Default Re: Bucking bronco. Vacuum problem? – 09-12-2019,09:46 PM
    The turbo has a wastegate as it is not a VNT unit so no VANES, if it was stuck open you would have underboost. Check the charge pressure control lines to the N75 and the wastegate actuator are in good condition.
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  3. Re: Bucking bronco. Vacuum problem? 
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    dwklingbeil
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    Default Re: Bucking bronco. Vacuum problem? – 16-12-2019,03:48 PM
    Thanks crasher. Do you have a link showing how to access the waste gate linkage?

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  4. Re: Bucking bronco. Vacuum problem? 
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    Default Re: Bucking bronco. Vacuum problem? – 16-12-2019,10:09 PM
    It is the can on the side of the turbo.
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