Monte Carlo & Lumina Since the 1970s, the Monte Carlo has been an icon of American stock car racing. A 4-door version, the Lumina, was produced in the late 90's.
Platform: A-, G-, & W-body

po 128 po 135 po 645

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Old March 6th, 2009, 12:45 AM
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Question po 128 po 135 po 645

I got these code when I ran the engine code reader (po 128 po 135 po 645). My car has been over heating for a while but i just put the heater on when it starts to go up. Now the needle for the temp stopped moving in my car and i cant tell the heat, so i would just always leave the heat on and roll the windows down. On my way back home from a long trip all the sudden cruise control went off and i started decelerating. now my car wont go above 2,000 RPMs. it feels like its not wanting to shift gears. And when i go up hills its not doing anything except decelerating no matter how much i push down on the accelerator. If some will help me and telling me what the codes mean, how to fix it and about how much they think it would be that would be great! thanks so much for time!
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