2.4jtd boost controller problems
ok, i think i have found the cause of my low power/smoky issues at low revs. (EGR cleaned, Maf unplugged, all pipe work checked).
when i first start the engine i can see if the actuator immediately draw the rod straight in that controls the variable vanes. then it stays there until 3-4krpm, when it moves a small amount and judders. if i disconnect the boost pipe at the control solenoid, i can move the actuator relatively freely by hand, and if i suck on the pipe i can make it withdraw. which i hope means the problem isn't with the vanes being stuck inside the turbo.so my questions,
1: how should the actuator behave when revving the engine? i'm guessing it should move a noticeable amount between 0-2.5k rpm, and smoothly slide in and out across the rev range.
2: is the boost control solenoid easy to test or fix? or do i have to replace it, i have read they can seize.
hope that all makes sense. I've owned this car 3 weeks and not been able to enjoy driving it yet, just want it fixed now!!