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#1
12-20-2003, 01:28 PM
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My wastegate was stuck closed
Speaking of wastegates, I just had the problem where mine was stuck closed. I would get so much boost that the overboost cutout valve would activate at 85+mph with my foot to the floor.
I was able to remove the wastegate cover off of the garrett turbo, and free it up by gently rocking the locknut back and forth. Now I still have excellent power, and the overboost cutout isn't activating any longer, which gives me a lot more power. Once that circuit kicks on, you loose about 30% of your power. I suspect that others have had this problem and they "solve it" by disabling the overboost cutout circuit. To each his own. Joe 
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#2
12-20-2003, 01:33 PM
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Not a bad idea to check older turbos for proper performance. I've heard of missing actuator links on the Garret used on the 603s -- no boost at all since the wastegate is wide open all the time.
Peter
__________________
1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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