Hello my car runs great under 3000rpm once I hit 3000rpm it starts to miss fire but if I am light on the throttle It will rev over 3000rpm I am stuck on what to do I have allredy replaced the cps and maf. Car info m52 obd1 s52 cams TRM chip and headers. Any info would be greatly appreciated thanks.
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Does it happen When u get on it? Check urfuel pump does it seem like it's gonna die when u hit 3000 like sputtering? -
It sputters around 3000rpm on a wide open pull then clears at 3500 and pulls to the rev limiter. And also the rev limiter cahnges almost every Tim I drive the car sometimes it's at 4500 other times at 5500 and 6000. And the car also runs better when cold.Comment
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Fuel pump maybe, if it's not giving enough fuel.
Have you checked if your injectors are clean and your spark plugs are good? Coil packs are in working order?
TPS could also be the culprit.Comment
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