SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: sl600 throwing fuel trim codes (p0170) and not running right

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Old Apr 29, 2014 | 09:37 PM
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wiseman1997's Avatar
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1997 sl600, 1995 sl500 and 1984 300sd
Exclamation sl600 throwing fuel trim codes (p0170) and not running right

Hi everyone!, this is my second r129, it has been sitting all winter in storage and before putting it away it was running perfect, but after taking it out of storage it is throwing CEL and the idle wont say constant. if it is in park or neutral and i rev the engine the idle will go up and down between 1k to 2k rpm. the first code it threw was engine revolutions higher than expected and that never came back but now it throws fuel trim bank 1 and bank 2 (P0170), if any one can help that would be great!
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Old May 8, 2014 | 09:36 PM
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1997 sl600, 1995 sl500 and 1984 300sd
Update: I fixed it, it was a vacuum hose that went to the throttle actuator and it somehow got disconnected.
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