Re:Low Turbo Boost '86 5KCSQ

[Alex Kowalski (audial@aol.com) (Tonya Jones) <tjones@wppost.depaul.edu>]

Did you do the output tests on the ECU that cause the WG frequency
valve to click?  Did you pull the ECU codes?

It could be a stuck wastegate -- they're not that hard to take the cap off
of and check.

Are you sure the turbocharger is spinning?

If the valve clicks and isn't leaking and the WG isn't stuck then it could be
that your turbo is no longer spinning or you have a leak somewhere else -
maybe the intercooler to throttle-body hose.  

Even without the backpressure from the WG frequency valve I thought
the turbo should put out _some_ positive pressure with only the
wastegate spring? Then again, maybe your dash gauge reads low but
since you say you were seeing 1.4 bar this seems pretty unlikely.