'88 5kcstq slow boost, continued

[Todd Phenneger]

Ken,
  Just a thought, but have you pressurized the vacuum system and
checked for leaks yet.  Why swapping the hoses gave you 1.5bar
I'm not sure though.  There is one input to the WGFV and that
cycles the line to the WG from boost pressure to ATM.  So if you
put the boost line directly to the WGFV that would do that.  And
a LOT more than 1.5bar as well.  Fuel pump cutoff
not/withstanding. :-0   I wonder if maybe your WGFV is broken
and not holding boost properly?  Just a thought.
  l8r
     Todd


--- Ken Keith <auditude at neta.com> wrote:
> Would it help if I described it as 1.2 bar boost all the way
> to redline 
> in 2nd?  I switched off my invisible font, so please feel free
> to 
> respond to any of these posts. :-)
> 
> Last night, I found that the hose from behind the throttle
> body to 
> the WGFV was very loose at the IM.  I could have sworn that
> was 
> the cause of my slow boost building.  I figured, no/less boost
> going 
> into that hose, and therefore to the WGFV and to the top
> chamber 
> of the WG.
> 
> In the semi-darkness, I inspected the hoses coming from the 
> WGFV.  I thought they were reversed, so I swapped them with 
> each other.  I was really sure this was the problem.  As I
> thought 
> about, it seemed like the computer would be applying vacuum to
> 
> the top of the WG chamber instead of boost.  It made perfect 
> sense.
> 
> However, the test drive after I swapped these hoses proved 
> otherwise.  I definitely have boost, it went all the way to
> 1.5 and the 
> fuel cut.  I guess my turbo works.  The power delivery was all
> mess 
> up tho, and although I saw much higher peak boost, it was
> obvious 
> that it wasn't correct.  I believe my (recently new anyway)
> WOT 
> switch works fine as well.  It would not begin the crazy
> boosting 
> unless the throttle was pressed down past the trigger point 
> (57degrees?).
> 
> I could hear the pressure about to blow my intercooler caps
> off 
> when I shifted.  I brought it home and put the WGFV hoses back
> 
> the way they were.
> 
> So, does anyone have any thoughts on this?  I've gotten no 
> feedback yet.  Is this on? [tap, tap]
> 
> If there's something wrong, and I believe there is, I'd like
> to fix it.  
> I've got a boost gauge coming now, Summit Racing with 24 hour 
> ordering is really cool.  A new used ecu with TAP chip and WG 
> spring is on it's way.  I will be strapping my intercooler and
> driving 
> carefully until I get my bypass valve installed.
> 
> Please comment! :-)
> 
> Thanks,
> 
> Ken
> '88 5kcstq et al


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