Dear friends, We have the following problem with our '99 2.3 dohc authomatic galaxy: When we arrive at fairly low speed continuous drive speed (up to approx 2500 rpm) the engine stutters often but not always, until we (and more) gas bijgeven. At a standstill in the d varies the speed around 750 stores and sometimes even decreasing. When the car in the p or n put it back to normal speed and the engine will not spontaneously. When you start and put in the d, there is nothing wrong. When using injection cleaner seemed the issue, but after 2 refueling the problem is again, and injector cleaner helps even more. What have we done: Spark plugs replaced 1 of the ignition coils replaced because of the contact was broken lmm replaced air filter egr blanked off injectors cleaned fuel filter Who can help us with this? Thanks ... P.s. Great site, i've allready solved some problems with help of this site, and sorry for any mistakes in my english because i'm dutch.