Question about 1989 Chevrolet Camaro

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Rough idle, Car shakes, sputters and misfires upon acceleration

When the car is cold it seems fine. After a couple of miles the trouble starts. It idles roughly, upon normal acceleration the car starts shaking and sputtering. If I accelerate very slowly it will reach 55-60mph and then seem fine, unless I accelerate harder. If I accelerate hard the passing gear kicks in and accelerates much better. This car has a 305ci motor, any ideas?

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  • Anonymous Mar 18, 2014

    Shudder appears after car is warmed up, when I try to accelerate in any gear (automatic); seems to smooth out when I reach up to speed

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It sounds like you may have a problem feeding the fuel to your engine, I had the same problem with my 89 RS. All the 1989 model's fuel systems were recalled. I think you may need a new fuel pump. The fuel pump is located inside the gas tank in the rear of the car right under the rear axle. The fuel pump itself isn't too expensive, but with other small parts such as the electrical harness upgrade and fuel filter and the labor you should be looking somewhere in the $500 range. I hope this helps.

Posted on Jan 12, 2009

  • TAMARA BELGARD Dec 01, 2010

    I HAVE THE SAME PROBLEM WITH MY 89 RS HOWEVER AFTER RELACING TIMING CHAIN MANAFOLD GASKETS STILL HAD THIS PROBLEM ITS ALL ABOUT TIMING EXPENSIVE LESSON TIGHTEN MOTOR MOUNTS AND CHECK TIMING RUNS GREAT NOW DID NOT NEED FUEL PUMP

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Posted on Jan 02, 2017

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