I AV INFINITY QX4 2002 WHEN EVER I SWTICH ON THE AC THE CAR WANNA SWITCH OFF SO I OFF THE AC AND THE A/C ISNT COLD ENOUGH PLZ HELP ME OUT

I think it has something to do with the car battery

but the battery is powered and i av been using for a long time shd i change it sir i use 80amps sir

You need to check your tuning , i mean your engine tuning and also your plugs and current for leakages anywhere. Also if your engine compression is low as a reult of dirt, carbon build up,it wouldnt stand it that has to do with your cylinder heads and injection system- That i learn from AU. Hanson in Mercedes Benz thread

thank aloty engine tuning abi wen i swtch on the ac the engine sond goes down and the no goes below 1 but wen swtch off it rises sir