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Old 10-23-2007, 12:07 PM
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myanoch myanoch is offline
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Join Date: Aug 2004
Location: Scranton Pa.
Posts: 239
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
Any help would be appreciated
[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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