Zero Turbo Boost

[nicodemus815@...]

We were cruising about 5 miles from QZ when my dash buzzer went off. The
coach had a lack of acceleration. No grinding noises, oil leaks etc. All gauges
OK, except zero turbo boost.

I took the air filter off and peered down the intake, the turbine can be seen
spinning and the filter is clean.

I noticed there is a blue small diameter hose that appears to come off the
rear area of the turbo...is this the line that goes to the turbo boost gauge?
I'm thinking that is malfunctioning, or one of the large diameter air pipes may
have "slipped" from it's mate.

We have twin beds, how do I gain access to the front of the engine, from the
bedroom? Suggestions?

Steve Harrie
'86 PT38 8v92


[Non-text portions of this message have been removed]

[nicodemus815@...]

We were cruising about 5 miles from QZ when my dash buzzer went off. The
coach had a lack of acceleration. No grinding noises, oil leaks etc. All gauges
OK, except zero turbo boost.

I took the air filter off and peered down the intake, the turbine can be seen
spinning and the filter is clean.

I noticed there is a blue small diameter hose that appears to come off the
rear area of the turbo...is this the line that goes to the turbo boost gauge?
I'm thinking that is malfunctioning, or one of the large diameter air pipes may
have "slipped" from it's mate.

We have twin beds, how do I gain access to the front of the engine, from the
bedroom? Suggestions?

Steve Harrie
'86 PT38 8v92


[Non-text portions of this message have been removed]

[Curt Sprenger]

Steve,
Here is what I know about our Bird. Our's is the queen island bed. To
gain access to the front of the engine, the mattress has to be lifted,
boards removed, and then a double plate about 18" square, has to be
removed. Lots of screws and sealant. Heavy too, but all comes out as one
unit when the screws and sealant are out of the way. The hex bolts
through the plate are to hold the double plates together. Do not remove
them. Use a hack saw blade to cut through the sealant. Use sealant when
reassembling.

I'm not familiar with the twin bed arrangement. But I checked a '86 PT38
on BirdConnection. Looks like that center drawer between the beds comes
out. The access hole/plate might be under the drawer on top of the base
that the center drawer sits on. That is the position of the access
hole/plate in our Bird.

Good luck.

Curt Sprenger 1987 PT38, Anaheim Hills, Calif.



nicodemus815@... wrote:

> We were cruising about 5 miles from QZ when my dash buzzer went off. The
> coach had a lack of acceleration. No grinding noises, oil leaks etc.
> All gauges
> OK, except zero turbo boost.
>
> I took the air filter off and peered down the intake, the turbine can
> be seen
> spinning and the filter is clean.
>
> I noticed there is a blue small diameter hose that appears to come off
> the
> rear area of the turbo...is this the line that goes to the turbo boost
> gauge?
> I'm thinking that is malfunctioning, or one of the large diameter air
> pipes may
> have "slipped" from it's mate.
>
> We have twin beds, how do I gain access to the front of the engine,
> from the
> bedroom? Suggestions?
>
> Steve Harrie
> '86 PT38 8v92
>
>
> [Non-text portions of this message have been removed]
>
>
>
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[John Suter]

Hi Steve,

Not sure what dash buzzer you refer to, but it could
be the heat sensor in the engine compartment. Ensure
neither the super-hot, nor the after-cooled hot air is
funneled near anything combustible. We have
lost/burned-up coaches to this issue when the only
first clue was reduced boost and loss of "zip."
Typically, cracks in the intake side of the cast
manifold was the culprit, but anything that dumps
exhaust into the engine area could be devastating.

John Suter




--- nicodemus815@... wrote:

> We were cruising about 5 miles from QZ when my dash
> buzzer went off. The
> coach had a lack of acceleration. No grinding
> noises, oil leaks etc. All gauges
> OK, except zero turbo boost.
>
> I took the air filter off and peered down the
> intake, the turbine can be seen
> spinning and the filter is clean.
>
> I noticed there is a blue small diameter hose that
> appears to come off the
> rear area of the turbo...is this the line that goes
> to the turbo boost gauge?
> I'm thinking that is malfunctioning, or one of the
> large diameter air pipes may
> have "slipped" from it's mate.
>
> We have twin beds, how do I gain access to the front
> of the engine, from the
> bedroom? Suggestions?
>
> Steve Harrie
> '86 PT38 8v92
>
>
> [Non-text portions of this message have been
> removed]
>
>


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[ronmarabito2002]

I believe that if you lost all your boost, you would leave a trail of
black smoke a long way, not just a lack of acceleration. I would bet
you lost your gauge connection or a gasket on the turbo.

R.E. (Ron) Marabito, Dallas, TX 92WB40
Currently in Show Low, AZ


--- In WanderlodgeForum@yahoogroups.com, nicodemus815@c... wrote:
>
> We were cruising about 5 miles from QZ when my dash buzzer went off.
The
> coach had a lack of acceleration. No grinding noises, oil leaks etc.
All gauges
> OK, except zero turbo boost.
>
> I took the air filter off and peered down the intake, the turbine
can be seen
> spinning and the filter is clean.
>
> I noticed there is a blue small diameter hose that appears to come
off the
> rear area of the turbo...is this the line that goes to the turbo
boost gauge?
> I'm thinking that is malfunctioning, or one of the large diameter
air pipes may
> have "slipped" from it's mate.
>
> We have twin beds, how do I gain access to the front of the engine,
from the
> bedroom? Suggestions?
>
> Steve Harrie
> '86 PT38 8v92
>
>
> [Non-text portions of this message have been removed]
>