Silly startup every time?

Jim Green jeg1976 at
Mon Aug 13 10:22:22 EDT 2001

--- Michael Gough <mdg3369 at> wrote:
> Hello,
> Right now my JT turbo engine is performing
> flawlessly except for one
> annoying thing. On every startup, warm or cold, I
> have to give it a little
> throttle to get started, and I have to hold the idle
> at 1000 rpm or it
> slowly gets lower in rpm and dies. After either
> driving to the end of the
> block (~1000ft) or holding 1000 rpm for 30 seconds
> to a minute, it idles
> fine at 800-900 like it should. The thing that I
> don't get is, it doesn't
> matter how hot the engine is, it just ALWAYS
> happens. Anybody have any clue
> what is happening? I'm thinking I'll probably
> install the ISV (haven't been
> using it since the conversion) and that should fix
> the problem. If I do
> install the ISV today, should the inlet of the ISV
> be in a boost tube or one
> of the lines that feeds the turbo. The ISV should
> fix it, but it hasn't done
> this in the last 2 months, and I'd like to know what
> is causing it.
> Thanks guys,
> Mike

Pipe it in after the turbo, depending on the model of
ISV, you would loose boost pressure if put before the
turbo.  I know mine stayes cracked about 1-2mm when

Jim Green
'89 90tq

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