Mechanics

ROUGH STARTING AND IDLE

2001 Oldsmobile Aurora • 167,000 miles

No engine light on, put computer monitor to see any codes, none present. I have tried reving the engine and it only goes to 4000RPM, then wehn I take my foot off the accelerator, the RPMs drop to zero with engine shuting off. Prior to this, the engine started fine and ran flawlessly at 675-700 RPMs. Details are below from my code reader:

FUEL SYS1 ~ OL NOT READY CL
SYS2 ~ OL NOT READY CL
ST FTRM1 ~ 1.5
LT FTRM1 ~ 9.3
ST FTRM2 ~ -4.6
LT FTRM2 ~ 10.1
MAP (Kpa) ~ 30
ENGINE RPM ~ 465 - 502
MAF (g, /sec) ~ 2.780
SECOND AIR ~ Error
02S11 ~ v=0.895; %1.5
02S12 ~ v=0.865; % NA
02S21 ~ v=0.935; %-0.7
Avatar
Jhul
March 15, 2012.



Check fuel pressure and check vacuum preferably on intake. If vacuum is 15" or below suspect clogged converter.

Hmac300
Mar 15, 2012.