Join Date: Feb 2010
metalman55 is offline
Re: Engine sputters when accelerating! Help!
i am having the same exact problem as the thread starter. it started after i put in some gumout fuel system cleaner. might be coincidence but i figure its worth mentioning. i changed the plugs, plug wires, fuel filter, took it to a mechanic for a diagnostic where he checked cylinder compression (fine) and some other stuff that i forgot but he couldnt figure it out and reccomended a new ecm so i got one programmed to my vin, put it in, and still same problem. i have checked the fuel pressure (fine), the fuel pump does turn on, changed that vacuum line to the fuel pressure regulator and the 2 connected to it, went to jiffy lube and had their pressurized fuel system cleaning thing done, took out the fuel injectors and had them professionally cleaned/serviced, cleaned out the intake plenum and all that other stuff attatched to it as my hanes manual instructed, and after all of that still no luck. i was thinking it could be a plugged catalytic converter but the problem came on pretty suddenly and slowly got worse. i cannot afford to have another mechanic look at it and know that there isnt really a way to check the cat without just replacing it. i have also recently started using shell v-power gas in hopes that it would help but no such luck. please help!