I HAVE 98 V70 NON TURBO LIGHT CAME ON AND READ P0120 AND IPUT A NEW TPS ONIT AND THE SAME PROBLEM START UP AND THE IDEL GOES UP AND DOWN THEN SHUT OFF OR SOME TIMES GOES TO NORMAL
Check your idle air control valve.It is mounted on your throttle body.Remove it and turn the key without starting it.If it doesnt move then it needs to be replaced.
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Check your idle air control valve.It is mounted on your throttle body.Remove it and turn the key without starting it.If it doesnt move then it needs to be replaced.