Low Boost Issue

Brett Dikeman brett at cloud9.net
Fri May 28 01:35:07 EDT 2004

At 12:26 AM +0000 5/28/04, jalexmichaels at netzero.net wrote:

>Other than the car being obviously low on power, and now not making 
>more than 1.4 bar on the stock gauge (consistent 1.8 during hard 
>acceleration before), the car has NO other running issues; no 
>stumbling, poor idle, stalling, etc.  The car does have IA Stage III 
>Any ideas would be appreciated,

Top causes would be failed wastegate frequency valve(measure the 
resistance, spec is in the Bentley, probably on SJM's site too), or 
faulty overheat signal from the multifunction temperature sender on 
the driver's side of the engine under the intake; if you have A/C, 
that's not it, as it is the same signal line that does both.

It's not a bad bypass valve(no stalling) and it's probably not a 
vacuum leak(usually shows up as 1.5-1.6 max boost, or massive running 
problems under acceleration).

"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin

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