I have a 97 Oldsmobile achieva w 2.4 dohc. It takes off on it's OWN up to 3000 RPM !!! and hesitates and dies. Could this be THROTLE POSITION SENSOR ????
Does it start back up?
Clean the EGR valve as well..
There should be a air idle control sensor that adjust rpm from cold start to warm-up, not to say the TPS is not bad either, it is just a rheostat that tells the computer the position of the throttle. I believe Auto Zone can test these items.
Sounds like a vacuum leak. HTH. -Jim
It DOES start back up. It revs to 3000 rpm and I shut it off and restart. It will do this about every other day or so.
Vacuum leak or sticking IAC (Idle Air Control) valve. HTH. -Jim
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