Posted 17 November 2007 - 10:36 PM
P1259 is almost always set because the engine is low on oil. This is usually the first thing to check with this code. If it has oil in the engine, I would replace the entire Vtec spool valve assembly to eliminate any internal problems with the valve.
It sounds like it may be missing at idle. What condition are the plugs and wires in? I would strongly recommend checking and replacing the wires with factory only wires and NGK standard plugs. OEM only on this engine.
A/F codes are almost always the o2 sensors. Make sure that you know which o2 sensor to replace so you are not replacing the wrong one.
Hit me up with any other questions.
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