by metalworker0 » Tue Feb 06, 2024 1:14 pm
i confess that i don't quite know what these pipes will be doing at tickover not knowing much about turbos ..but i would have thought they will be pulling as vacuum at tick over, and you would be testing with brake cleaner ..squirting it on ...and looking for change of rpm as the cleaner gets sucked in through the point of leakage.
at higher rpms ..it would change from a vacuum to a positive pressure as the turbo comes into effect...that's my understanding.
As far as i know most sensor signals are ignored until it gets to a certain temperature, this is how the system runs, when its cold its called "open loop" ignoring the signals and using its ECU data base to keep engine running, once warmed up it goes closed loop and uses the information from the sensors to adjust things. works out if the sensor signals are within spec ..if not, puts a light on in the dash to tell you so, followed by limp home mode if serous error.
i don't mind being corrected on this ..
all the best.mark