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10-23-2007, 12:07 PM
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Fluctuating fuel pressure
My 2000 sl500 had 2 codes p0170/p0173
did a search and found to be vac lead or mass air sensor Not that this has anything to do with engine light But My question is during the diagnostic end I checked fuel pressure It was jumping at idle from 56 to 58 lb when I increased speed it stabled out at 58lb My question is this normal jumping pressure at idle and amount of pressure 55,000 Any help would be appreciated Mike
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[B]Mike Y. 00 sl500 sport 88 560 sl (sold) Last edited by myanoch; 10-24-2007 at 07:24 AM. 
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