No 4 psi boost at wide open throttle in neutral, no load
02-26-12, 12:24 PM
#1
No 4 psi boost at wide open throttle in neutral, no load
Trouble shooting procedure says I should get 4 psi at WOT in neutral but never have!
I have checked and double checked for leaks but no results! So is this an accurate test or not, some people say no
?????????
Procedure:
Check no-load operation of Primary Turbocharger
Briefly accelerate engine to WOT in neutral, +4 psi should be obtained.
If you do not get this you most likely have a leak of the boosted air. This is anywhere from the turbos to the intake manifold. See Turbo Leak Diagram for helpful hints.
If get +4 psi, then watch the Turbo Pre-Control Actuator rod for movement
I have checked and double checked for leaks but no results! So is this an accurate test or not, some people say no
?????????
Procedure:
Check no-load operation of Primary Turbocharger
Briefly accelerate engine to WOT in neutral, +4 psi should be obtained.
If you do not get this you most likely have a leak of the boosted air. This is anywhere from the turbos to the intake manifold. See Turbo Leak Diagram for helpful hints.
If get +4 psi, then watch the Turbo Pre-Control Actuator rod for movement
02-26-12, 12:36 PM
#2
those diagnostic procedures only include the "YES" response to each test.
...what if the car failed test 3, or 5 or whatever step?
in your case, make sure you hold WOT until at least 4500 rpm.
the boost should read 0psi and then creep up to 4psi by 5k rpm.
...what if the car failed test 3, or 5 or whatever step?
in your case, make sure you hold WOT until at least 4500 rpm.
the boost should read 0psi and then creep up to 4psi by 5k rpm.
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