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International Automotive Technicians Network
Re: Dual Tracin' with the 2400
Posted to Snap-on Handheld Users Group on 4/1/2002 3 Replies

Hiya Pete,

[...trimmed text...]

A cracked thimble could cause an O2 sensor to go negative. I think this one had a crack that would open only under load.

[1984 Nissan 200SX, O2S Waveform]

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