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GT Sputtering under load- only at idle and slowing down



Ok so plugs and wires didn't fix in. And the problem got worse. Now it won't run at idel. I can start it by giving it gas, and shirt and drive quick and runs fine on the road. But as soon as the rpms. Get less the 1000. It dies ????

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I used auto light platinum I think, they where like 8 bucks a piece. I'm gonna try unpluging in the morning if it doesn't start agin. Right now its starting again. But still has the rough idle. But when I drive its fine. Got good pep and everything!
I was reading about this fuel pump resistor issue. Do you think that could come in to play? Or are the syptoms not the same?.

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Return the plat plugs. The fuel pump res would make it not start at all or start for a few seconds and die.
 
Ok that's worth a shot, but if it was the plugs would it run perfectly in all other ways. Right now its starting again. And is fine just putts at idle when I go to stop and take off.

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Ok new issue, I beleave its related.. The cars been running ok for a little bit. I'm driving down the road and the car hesatates like its going to die again... But dosnt , in stead the tac dies.. For looking in to it it sounds to be close to crank shaft sensor. Now I replaced the cam shaft sensor because that's the code I had. But looking at the wires. I'm guessing the crank shaft sensor could throw this code as well. What ya guys think. You think that's it?

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did u check the fuel pressure regulator. Pretty sure 2003 & older are still on the fuel rail. Pull off the vacuum hose on the top of the reg & see if it has any fuel in the vacuum hose. If so the diaphram is bad & the reg needs to be replaced.
 
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