too cool temps in the winter 200q20v Digest, Vol 28, Issue 26

SuffolkD at SuffolkD at
Thu Mar 2 23:05:43 EST 2006

Kerry:  having just a little bit of boost loss, will be quite a challenge 
I'd go over the vacuum hoses in the back of the engine first, making sure 
that the long one which runs on top of the EM isn't cracked or frayed.

Cool temps keep the ECU from making full boost.  I get 1.3/4 tops unless I 
let the car warm up, then after fixing the vac lines it was 1.7 easy.  The 
engine temp is the key here and although similar to the MFTS in the limit of boost 
syndrome, the thermostat is a close symptom that when the conditions are right 
(warmed up) the car will perform as intended until the ram air (intot he 
radiator) cools the coolant down if your thermostat is open.....

HTH - Scott by BOSTON

> From: Kerry Griffith <>
> Thanks Phil. I do have a (fairly) good independent shop, but they seem 
> to lose patience and interest with certain things, such as small(ish) 
> pressure losses.
> I've been told that there's actually someone good at the dealership 
> these days, and I've got to go in for the rear speakers, a.k.a. rear 
> fire danger, so I thought I'd give them a whirl for the the first time 
> in many years.
> The MTFS is only months old, but I don't know about the WGFV. I'll 
> search the archives and Bentley on that, and I suppose I should find 
> the time to build a pressure tester and see if I can find it before 

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