5kcsq low boost-help?

Nate Stuart nathan.stuart at maine.edu
Tue Feb 13 20:29:13 EST 2001


There are a number of items that can cause low boost here are a couple in no
particular order:
- Stuck wastegate valve
- Torn michelin man hose (The one b/w the intercooler and throttle body)
- Bad/stuck turbo
- Leaking intercooler (check the endcaps for excessive oily grub)
- Boost pressure line to ECU is damaged/split
- Could just be a bad dash guage as well (don't ever recall seeing 0.0 on my
display, was usually around 0.3)

And many others. For more detailed information on testing the numerous boost
related items on these cars check out: http://www.sjmautotechnik.com
Ideally you should be seeing ~1.3-1.4 bar of boost on the dash display.

If you need more specifics, ask away!
-Nate
'89 90q (sometime this week, I hope...;)
'87 5kcstq (donor...)

> noticeably more powerful than the NA car. Boost reads between 0.0 and 0.3
> bar at idle, and maxes out at 1.0 bar 95% of the time, occasionaly bumping
> to 1.1. Reading through the paperwork, there is a note from a mechanic
that





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