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'92 740 throwing codes, runs badly when AC is ON 700

posted by  someone claiming to be Downrange on  Mon Aug 9 04:39 CST 2010 [RELATED]

I would appreciate any help this forum can provide - I've had problems most of the summer with very poor running only intermittently and only when the AC is ON. Recently, it's thrown some codes which resolve to (Pin 2) 2-3-1 (fuel trim) and (Pin 6) 2-1-4 and 2-4-1, which seems to point at a possible ignition or vacuum problem. The fact it only seems to occur when AC is on seems significant - (vacuum leak somewhere in AC controls?)

It would be helpful in diagnosing if anyone has experienced anything similar and worked through to a solution. It's a non-Regina, non-turbo 2.4.

Many thanks, John






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New '92 740 throwing codes, runs badly when AC is ON [700]
posted by  someone claiming to be Downrange  on Mon Aug 9 04:39 CST 2010 >


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