1996 Oldsmobile Aurora Random Misfire trouble code.

1996 OLDSMOBILE AURORA
224,000 MILES • V8 • FWD • AUTOMATIC
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IAMWILLEY83
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My aurora has a trouble code of random misfire and has excessive gas consumption. The idle is rough and the after I run it for awhile and let it sit it will take about 5 seconds or more to start. Any Ideas on what the problem may be?
Jan 19, 2010 at 9:14 PM
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MATHIASO
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Hello iamwilley83,
Welcome to 2carpros.com

Dead oxygen sensor could cause rich condition in all cylinders.or coolant sensor that prevents the computer from going into closed loop, or by a faulty fuel pressure regulator that feeds too much pressure to the injectors.
Check the intake vacuum to see if there is an air leak that's upsetting the overall air/fuel mixture. A couple of overlooked causes here may be a leaky EGR valve or a leaky power brake booster.
Jan 19, 2010 at 11:11 PM