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Sputters when warm

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Old Aug 10, 2008 | 12:20 AM
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Default Sputters when warm

Car will run/idle fine... has a small cam but nothing else

Get in the car and drive some where and After 15 or so minutes, or if the car idles a long time it starts to sputter... I can cut the car off and re crank it and it will run fine for a little longer. Well I thought it was the fuel filter, changed it still doing it, well then i was thinking its rear o2's put sims from a working car on them, nope, but cam is more pronounced with o2 sims...

Going to pull codes tomorrow, but does anyone have any ideas or had the same problems

thanks in advance
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Old Aug 14, 2008 | 12:38 PM
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lets bring this up, I pulled the codes, everyone was fron 02's so i swapped them out with brand new ones.... I get to going down the road everything seems fine then BAM starts running like crap and a few miles later ses light 131 & 507

I cant for the life of me figure this out, maybe the fuel pump or injectors... but its like the ASR kicks in hard i can push the gas down and it wont go ANYWHERE just sputters but only if its been driven a few miles
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Old Aug 14, 2008 | 09:39 PM
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anyone?
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Old Aug 15, 2008 | 05:46 PM
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help?
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Old Aug 16, 2008 | 10:23 PM
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Im having the same problem. Its the fuel pressure regulator.I have a fuel pressure gauge and its all over the place 20lbs to 60lbs then down to 20 , so I would see if your regulator is fucked My 2 cents
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