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#1
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rough idle, only 2500 RPM
I have 2001 Pontiac Grand AM GT. the vehicle idles rough and when accelerator is pressed the engine will not exceed 25-3000 RPM. I just replaced the EGR valve and did not correct the problem. It did return codes P0135, PO404, and PO452
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#2
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Re: rough idle, only 2500 RPM
P0135: Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
PO404: Exhaust Gas Recirculation Circuit Range/Performance PO452: Evaporative Emission Control System Pressure Sensor Low Input Are you sure that your EGR valve is well connected and that no fuses are burned up? and that you don't have a vaccum leak? |
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