2001 Oldsmobile Aurora M Working On Olds 3 5 Engine Get Code Po301 Ve Changed

2001 OLDSMOBILE AURORA
80,000 MILES
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I'm working on a olds aurora with a 3.5 engine and I get a code PO301. And I've changed coil packs 02sensors, changed spark plugs and the boots for the spark plugs my customer said it ran fine when he brought it to me to tune it up and now I've been working on it ever since then and also I checked the compression it is fine too
Feb 26, 2013 at 2:02 AM
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HMAC300
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there is no codes 301 but a 300 for a 3.5 but check your fuel pressure first that will causee misfires. if the customer brought it in for a misfire then it could have been the fulep pump all along or a vacuum leak. fuel pressure shold be 41-47 psi if lower tehn replace the pump
Feb 26, 2013 at 5:27 AM
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