I have a '94 firebird that has started running rough. I replaced all of the plugs and plug wires. I also replaced the EGR valve. However, when driving, the car idles rough and when on the highway when it shifts down to overdrive the whole car starts shaking when the gas pedal is pressed. Once you give it enough gas to get out ov overdrive it stops shaking. If anyone has any ideas please let me know. TIA
No SES codes? Clean the fuel injection. The injector tips sometimes accumulate carbon in the cones which can make for a poor spray pattern. Use a kit that cleans the system, not just an additive to the fuel tank.
...Ron
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68' Camaro RS 88' Firebird Formula 00' Mustang GT VertI have a 95 w/3.4 Auto. I had experienced this also....I replaced the plugs with Bosch platinum+4 's and accell solid core wires. ( I had replaced the plug wires and plugs I have a '94 firebird that has started running rough. I replaced all of the
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