regarding mt 05 saturn ion with check engine light on and power down signal that affects the operation of driving the vehicle ,well i had the codes checked out po222 ,p2135,p1681 but still unsure what parts need to be changed .i checked all fuses for damage ,wies and connectios also i installed a new gas pedal and throttle body, im still experiencing same issues,my last resort would be havind a new pcm. computer installed but would be open to any advice before i go this expensive route. any answers ?
clean maf sensor test throttal body position sensor the 2 most common problems in thes cars is the throotal body positon sensor and maf senso the dont always go bad but just need to be cleand
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