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  1. General Truck Chat
    Hello All, I have a 09 chevy colorado 2.9 L 120xxx miles. I'm so stumped I have a p0420 and had not one but three different type of cats put on this truck the third one being the high dollar one with 2 brand new 02 sensors. I checked all the vacuum lines that I could find and had it smoke...
    catalytic lean p0420
  2. 1st Gen Engine Talk - I4, I5, and V8
    Ok. its been losing power for a while but finally took it on a 6 hr trip and it had no acceleration on the highway terrible fuel economy and even started to over heat going over a pass which I got down to 30 mph with pedal to the floor. popped the hood and the exhaust manifold was glowing around...
    acceleration catalytic reduced power throttle body throttle position sensor
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