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LH 3.1: no 1-2-4 code - Help 900 1993

posted by  someone claiming to be TomM on  Mon Jan 16 18:40 CST 2006 [RELATED]

Does anyone know what lack of a 1-2-4 code in diagnosic mode 2 means?

Per FAQ, I'm trying to solve a hunting (but smooth) idle problem and Test Mode 2 fails (I think) the 1-2-4 Engine idle speed compensation for Automatic trans. test. The IAC is nearly new so it's likley the ECU is in control of the idle problem. The ECU gives 1-1-1 (no fault) but I do not get the proper response from moving from Drive to Neutral (1-2-4). Is the IAC supposed to increase idle soley based on selector level position? (I was thinking of repalcing the TPS pot.)

Any help would be appreciated. Anyone trouble-shooted a LH 3.1?

TomM






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New LH 3.1: no 1-2-4 code - Help [900][1993]
posted by  someone claiming to be TomM  on Mon Jan 16 18:40 CST 2006 >


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