atikovi
Veteran Member
- Joined
- Jun 22, 2002
- Location
- Suburban Washington DC
the hose to the VNT actuator is disconnected. I had the turbo rebuilt by a reputable turbo rebuilder, installed it, and the car runs like crap. No power until 2200 rpm, black smoke, rapping noise, acidic smell from under the hood like the converter is overheating. It ran better BEFORE the rebuild.
If I remove the hose from the VNT actuator it's a whole different animal. Tons of smooth power, no significant smoke or noise. I assume removing the hose keeps the turbo vanes closed so it builds full boost all the time. Thats great but if not careful could damage the engine if you give it too much boost so I want it running like it should.
Ran some tests. Put vacuum to the actuator and the rod moves smoothly and holds vacuum. Checked the solenoid and it puts out good vacuum to the valve. Do have the code P0299 low boost. What to check next? Could the actuator rod be out of adjustment? Don't rebuilders bench test and adjust that?
If I remove the hose from the VNT actuator it's a whole different animal. Tons of smooth power, no significant smoke or noise. I assume removing the hose keeps the turbo vanes closed so it builds full boost all the time. Thats great but if not careful could damage the engine if you give it too much boost so I want it running like it should.
Ran some tests. Put vacuum to the actuator and the rod moves smoothly and holds vacuum. Checked the solenoid and it puts out good vacuum to the valve. Do have the code P0299 low boost. What to check next? Could the actuator rod be out of adjustment? Don't rebuilders bench test and adjust that?
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