Re: 87 5ktq boost problems and questions---> Problem solved!

["Stacy Mohr" <samsims@hotmail.com>]

Last weekend I did the exhaust back pressure test thinking that maybe the 
exhaust was plugged up, no problems found, around 1-2 psi @ 4k rpm.  Then I 
started thinking turbo since i had already done the overboost test.  I 
decided to try the over boost test again only this time disconnecting the 
lower waste gate hose and plugging the manifold (I just pinched off the line 
before, but abviously not enough).  On the test drive on got 10 psi and fuel 
cuttoff!  What a relief, no turbo prolems.  Started checking the system 
controls again and found the full throttle switch not working.  I had 
already taken it apart and fixed it before (contacts were bad), this time 
the contacts were good but one of then solder joints had cracked.  
Resoldered it and went for a test drive, 6 psi everytime now!  Time for the 
1.8 bar upgrade!

I also installed a boost gauge (before doing the testing) and can confirm 
that the onboard gauge is trash, don't trust it.  One problem I am having 
with the gauge (autometer) is the line, its hard plastic and it kinks very 
easily, anyone run a flexible line?  i would think that would through the 
ready off a little.  I think i might run a little flexible line up around 
the gauge because that is where I am havin the problem, it just doesn't want 
to bend like i want it to.

sm


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