Its not a matter of asking for a service call and the injector pump was rebuilt and we did ask toyotalift of houston and they have never seen the problem before...being that it takes 3.5 minutes and then the accleration issue disappears...I have talked to M&D (the very reputable rebuilder) and being that it sometimes works and sometimes does not...they say that cannot be the problem, but I think that we are going to have to pull it anyway for them to double check it...but we hate to go to all that work to find out that there is still nothing wrong with the pump !!!!