LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Power Cuts Off At 4k RPM

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Old 09-13-2003, 08:09 AM
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Power Cuts Off At 4k RPM

Lost to a rice rocket because power was non existant at 4k rpm.



FYI, If your AC/Cruise Fuse is blown you will not be able to make power after 4k rpm.

After losing the race I pulled over changed the fuse and got all my power back. Kinda wierd.
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Old 09-13-2003, 10:47 AM
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power loss up top is usually do to a faulty coil/coil wire. Try that first b/c its cheap
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Old 09-13-2003, 12:52 PM
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Here were my symptoms: at around 4k when flooring the car ... feels like a 4 banger, doesnt feel like a miss, just reves with little or no power. Shifts hard into next gear though.
Solution: New fuel pump, car had very low Fuel Pressure. Easy check would be to borrow a fuel pressure gauge and see what your fuel pressure is at before you decide to go with coil or fuel pump fixes
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