Sudden loss of boost pressure
pjrose at frontiernet.net
Fri Jan 10 10:54:07 EST 2003
At 6:41 AM -0500 1/10/03, Richard E. Berlin, Jr. wrote:
>I'm running Ned Ritchie's IA III+ chip in my 81k mi. 20v
>Avant, and it has been running flawlessly. But recently, I
>have noticed a partial loss of Boost pressure ( from 1.8-1.9
>to current 1.4) and the loss has been sudden, not gradual.
>Aside from checking the turbo hoses I wonder if any of you
>might recommend a check list of things I might try to
>restore this sudden loss of oomph.
>Am I correct in recalling a thread wherein this happened to
>another lister not long ago? Was it repaired by replacing
>the MAF sensor??
Perhaps you're recalling the much-more simple and cheaper replacement
of the MFTS (temp sensor) which often fails--causing sudden drop in
max boost to about 1.4 bar. You'll generally get an occasional
overheat message and beep when the MFTS is in this failure-mode, but
that might only be seen erratically.
Phil (BTDT and--need to do it again)
Phil Rose Rochester, NY USA
'91 200q (135 Kmiles, Lago blue)
'91 200q (58 Kmiles, Tornado red)
mailto:pjrose at frontiernet.net
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