1989 oldsmobile delta 88 3.8 v6 182,000miles

1989 OLDSMOBILE
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EASTSIDESKATER14
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hi. i have a 1989 oldsmobile delta 88. the car runs great under slight throttle. after driving it for a while, when its gets all warmed up, when i punch the gas to the floor it will go great but when the rpms get high it starts sputtering and stalls for a sec and then kiks back on.Seems like it not getting enough fuel or sumthin. my brother did a fuel pressure check on it and it was 35 psi. is that the right prussure?also when i have it to the floor it seems like the computer is trying to think of how much fuel to give it by fluctuating back and forth and i can feel it.i have a new fuel filter,new plugs and wires,new alternator,new cam sensor,new egr valve.It also idles very roughtl when stopped in or out of gear. sumtimes it will have a terrible misfire and the whole car shakes. like it runnin very lean. any help would be appreciated. thanks
Apr 19, 2006 at 10:57 PM
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LOSONE
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Olds 3.8 with that many miles is a tired engine. Everytime you floor it yiou chance for it to fly apart. From the way you describe the problem it sounds like a vacuum leak. Have a mechanice with a smoke tester check for a vacuum leak. Have him or someone do a wet/dry compression test. The fuel pressure is at the lower limits. You need to check the fuel pressure regulator. Let me know
Apr 20, 2006 at 9:02 AM