Liam121093 Posted July 17, 2017 Share Posted July 17, 2017 Hello I have a focus 1.6TDCI, I have a turbo issue. When driving i notice my boost Pressure (20psi) drops to 10-12psi if i reach 3,500 RPM maybe a coincidence as it is normally uphill i reach 3,500 RPM but has happened a few times on the flat. I also have a turbo underboost issue (no EML) Forscan shows code, But occasionally more so uphill my turbo will pretty much cut out, There will still be pressure but not noticeable. So far i have done. Cleaned DPF Replaced all sensors on DPF and intake air temperature sensor. Checked all turbo pipes for leaks (removed and inspected) Cleaned MAP sensor. Is there anything else i can try? On another note i have read about preloading the wastegate and wondered if anyone had done this, I was thinking of doing it to counter the under boost? But im worried about any damage it might cause. Thanks in advance Quote Link to comment Share on other sites More sharing options...
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