'88 5kcstq slow boost, continued
Lawrence C Leung
l.leung at juno.com
Tue Mar 13 18:04:40 EST 2001
Ken,
No time to really check the vacuum lines (there should be an illustration
on the radiator core support, required by EPA for emissions checks, but,
just to be sure, have you checked Scott Mockry's site,
(www.sjmtechnik.com I think)?
LL - NY
On Tue, 13 Mar 2001 08:55:56 -0700 "Ken Keith" <auditude at neta.com>
writes:
>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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