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International Automotive Technicians Network
Re: 'Please diagnose my P1406'
Posted to Technical Discussion Forum on 3/1/2008

Hi Andy,

[...trimmed text...]

It was, backwards. In the first screen, I hit the gas, RPM goes over 3000, the pintle drops. If it had a clogged cat, backpressure would have slammed it to 100% open, as Allen pointed out,... Login to read more.