[s-cars] cars] Momentary cut out under full boost

Robert Myers robert at s-cars.org
Fri Oct 26 07:54:08 PDT 2007

Or the ECU could be cutting ignition as a result of an input from 
some source, either erroneous or correctly.  Ignition is cut in 
response to a signal the ECU interprets as overboost or to a signal 
the ECU interprets as engine rpms exceeding the rev limiter.

Overboost can be the result of any number of factors, not the least 
of which, might be a split WG diaphragm or a faulty WGFV or a 
blockage in the WGFV to WG hose.  Exceeding the rev limiter can 
happen (in addition to actually over-revving the engine) as the 
result of an improperly set limit in the ECU software.


At 10:44 AM 10/26/2007, FvAMI at aol.com wrote:

>If your speedo goes to 0 it could mean
>1) Speed sensor going out or bad connection. (not sure if ECU cuts boost
>under these conditions).
>2) ECU going bad.
>3) Bad connection to the ECU. Momentary short somewhere causing the ECU to

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