Question about 1997 Buick LeSabre

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1997 buick lasabre custom high idle, transmission, stalling

1997 Buick Lasabre Custom - Changed TPS , IAC, MASS AIR FLOW, COOLANT SENSOR, MODULATOR VALVE, Code Reader Is P0122 & P1406.
PROBLEM-IDLE HIGH / TRANSMISSION NOT SHIFTING / STALL WHEN DRIVING, WHAT COULD BE PROBLEM????

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  • Anonymous Mar 14, 2014

    will not shift from 2nd to 3 rd

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Had same problem i would check the Idel Air Valve and also check all of your vaccum hose lines makeing sure there are no cracks or splits in rubber connectors if there is repair immediatelt because over time they start to dammage the internal parts fo the engine and if youve replace tps mass air etc. sounds like a vaccum hose problem

Posted on Feb 10, 2009

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Try cleaning your grounds under the hood: under Ignition Module bracket, rf fender behind battery and lf fender in front of windshield washer fluid bottle.
I had similar problem and this fixed it.....grounds are very important for computer.
I used a carbon conductive grease on the connections to keep them from oxidizing.
Hope this helps you out.

Posted on Jan 31, 2009

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