1989 turbo 760 loosing power up hill but runns smooth down hill orlevel

[Dick]

1989 turbo 760 loosing power up hill but runns smooth down hill or level.
Engin is nt shaking so sparkplugs are not a suspect
gears shift ok on downslope so tranny seems ok. when Turbo kicks in it
seems to immediatly drop power more, pulling bac ccelerator actually
speds it up a bit.
antifreeze is topped up, the car did not overheat.

Looks like Turbo problem.
What is your opinion on the possible causes?
Dick

 

[Randy G.]

1989 turbo 760 loosing power up hill but runns smooth down hill or level.
Engin is nt shaking so sparkplugs are not a suspect
gears shift ok on downslope so tranny seems ok. when Turbo kicks in it
seems to immediatly drop power more, pulling bac ccelerator actually
speds it up a bit.
antifreeze is topped up, the car did not overheat.

Looks like Turbo problem.
What is your opinion on the possible causes?

I am not turbo savy, but this generally sounds like a fuel-quality
problem. The computer may be retarding the spark because the knock
sensor is sensing knock or ping. Try a tank or two of high-quality
(name brand) premium fuel.

Otherwise, you are giving it more air but it isn't getting more fuel,
so suspect an air leak between the AMM and the throttle body or a
vacuum leak somewhere.

Just guessing...

__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"

 

[Boris Mohar]

I am not turbo savy, but this generally sounds like a fuel-quality
problem. The computer may be retarding the spark because the knock
sensor is sensing knock or ping. Try a tank or two of high-quality
(name brand) premium fuel.

Otherwise, you are giving it more air but it isn't getting more fuel,
so suspect an air leak between the AMM and the throttle body or a
vacuum leak somewhere.

Just guessing...

__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"

That is a good guess



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca

void _-void-_ in the obvious place

 

[James Sweet]

1989 turbo 760 loosing power up hill but runns smooth down hill or level.
Engin is nt shaking so sparkplugs are not a suspect
gears shift ok on downslope so tranny seems ok. when Turbo kicks in it
seems to immediatly drop power more, pulling bac ccelerator actually
speds it up a bit.
antifreeze is topped up, the car did not overheat.

Looks like Turbo problem.
What is your opinion on the possible causes?
Dick

You've got a boost leak somewhere, check all the air hoses, particularly the
rubber joints at the intercooler.