Turbo boost is up around 60LBS. sluggish performance from take off when boost is high.now this is the one thats got me scratching my head . a/c blows hot air until speeds reach 25-30 mph. then it works great until you apply the brakes then a/c blows hot again.all this only occurs when turbo boost is above 25 LBS.

sorry, i should have said a wastegate that stuck closed. 60 psi is too much boost. not positive on a diesel, but other rams have vacuum controled doors. Diesels usually don't make intake vacuum, so i would find out what is supplying vacuum for the hvac doors. the ac may also be cutting out when you are in an overboost condition. sorry, i should have said a wastegate that stuck closed. 60 psi is too much boost. not positive on a diesel, but other rams have vacuum controled doors. Diesels usually don't make intake vacuum, so i would find out what is supplying vacuum for the hvac doors. the ac may also be cutting out when you are in an overboost condition.

thanks i discovered that vehicle has an exhaust type brake installed .solenoid valve was stuck in between on &off so it was getting a false signal. repairing that sensor took care of the boost problem but i still have an issue with the a/c blowing hot air. So if anyone out there knows how i can resolve this issue please let me know.thanks Tim Autrey thanks i discovered that vehicle has an exhaust type brake installed .solenoid valve was stuck in between on &off so it was getting a false signal. repairing that sensor took care of the boost problem but i still have an issue with the a/c blowing hot air. So if anyone out there knows how i can resolve this issue please let me know.thanks Tim Autrey