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Showing results for tags 'stumbling'.
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I bought a 1982 280zx non turbo last month and since then I've encountered a problem. The car will start stumbling and misfiring around 2500-3000 rpms. But the really weird thing is that the car doesn't do this all the time. I will start the car up, and it accelerates as smooth as silk without missing a beat. However, when the car warms up, I'll turn it off, then back on, and then the car will start misfiring at that rpm range. I've checked the air flow meter, the tps, replaced the distributor cap and rotor, replaced the o2 sensor, and a couple other things all with no luck. The o2 sensor did seem to help it, but not for that long. Please help, it's getting quite frustrating , and I'm slowly driving myself insane trying to find the problem. Any suggestions?
