Car is runnin like $hit
 

I recently drove from Florida to New Jersey to visit some family and then back to Florida. Now my car is running really slow. No throttle response, shifting like crap, and there is burnt serpentine belt caked one of the pulleys. (the upper smaller pulley) dont know which one that is. Any help is appreciated.

when was the last time you changed the fuel filter?

Fuel filter and fuel injector cleaner. Had similar issues.. slow throttle response, felt sluggish. Put in injector cleaner and feels much better. Still have to change the filter too. How many miles you got?

what fuel injector cleaner did you use and how did you do it?

It just goes into the gas tank with a full tank. I used prestone but was told chevron was the best.

It would also be good to clean your throttle body as well as the MAF.

Well after a day or so of messing with it, i called a local dyno shop and they are gonna custom dyno tune it. it did throw a few codes. The left bank 1 sensor 2 circuit had a slow response and a bank 2 sensor 2 is not right. I guess it will work out i have always wanted a dyno tune. Stand-by for some numbers.

+1 Chevron Techron II

Is the pulley you are talking about on the passenger side? The highest small pulley is one of the idler wheels at the belt tensioner assembly. Buildup on the idler wheels is somewhat common when the belt starts getting some age on it, but is not the cause of your problem. I'm pretty sure the dyno tune will cure your problems but I was just trying to give you one less thing to worry about!