My 1996 Chevy Silverado started jumping when at idle, then when moving started to lose its power when you step on the gas. While idling, you have to put it in neutral and keep foot on the gas until you start to move again. What could be the problem?
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Does it do it every time or just sometimes? If it does it just sometimes, it could be the ignition switch. If you notice that the PRNDL light goes out when it happens, then check the ignition switch.
If it happens all the time, could be the intake manifold.