I have a 1986 Subaru GL 10 Turbo wagon and it loses power at higher RPM. It acts like it's not getting enough fuel/air. I replaced the fuel filter and still have this problem.

SOURCE: 1993 Ford Tuarus Gl

have the catalytic converter checked

SOURCE: 1993 Ford Tuarus Gl IN NEED OF HELP!

Well this could be in your timing. As cars get some miles on them the timing chain stretches therefore causing you car to lose alot of power.So you may want to have your timing set on this car. Also I had a taurus that had a bad torque converter, and it lost alot of power on hills and under loads, also when i gunned the gas pedal. so try the timing first. Hopefully you dont have a bad head gasket or a cracked head these symptoms you are describing are all signs of head gaskets or blown heads

Ed

• 479 Answers
• Posted on Apr 13, 2009

SOURCE: power windows stopped working in my 86 subaru gl wagon

There has to be a fuse related to the power windows, check the owners manual. it may reside in a secondary panel in the engine compartment.

SOURCE: Where is the fuel pump located on a 1984 subaru Gl ?

I have a 1984 Gl Wagon 4WD; the fuel pump is located on the passenger side, on the frame rail under the back door, just in front of the rear wheel. It and the fuel filter are accessed by dropping the mounting plate that also serves as a protective plate. Again, this is the 4WD non-turbo EA81 engine GL Wagon; could be different on the 2WD version.

SOURCE: 2005 silverado lt 6.6 duramax diesel turbo..engine

Before we do anything else lets do a fuel pressure check to make sure the pump is a-ok as well as the fuel pressure regulator. Your gonna need shop manual for this as well as a fuel pressure tester. If all checks out then move to the Turbo code.
Turbo code looks like the waste gate is stuck open and your not building the boost. Do a visual inspection look for any signs of overheating and bearing wear. Check or change oil as needed.
With regards to the Mass air flow I believe you have to replace it. Keep in mind this thing might be the root of you whole problem.
I strongly suggest you use the shop manual for the codes you got. it will make this repair a snap.