Hesitation at high RPM's

[tommy583]

OK update. The chirping noise has been solved. It was a loose plug. The hesitation at RPM's over 5,500 is still there sometimes. I stopped by an Autozone on the way to work. There were no codes using the ODB II scanner. Now should I just buy a Durametric or would an Indy have a scanner that would work.
To refresh the situation the car has new plugs, fuel filter, air filter,AOS and belt. The indy that put in the plugs said the coil packs look good. I have never had a check engine light come on. I have run 5 or 6 tanks of gas since the car was taken out of storage. It did the same thing last year before i put it in storage.
From the input i have received from you guys so far i still need to check fuel pressure, MAF and maybe O2 sensors. Thanks