If you can pop it to the floor, and drive it hard,
and never get a code, it's probably a sticking injector.
My black one does this, the red one has started doing it occasionally, and both sometimes give me trouble with the Idle air control solenoid.
Driving it hard takes care of it...of course that may be hard on you license...
Off topic: Is there a way, besides going to the dealer, to find out which injector is sticking?
Passed my buddy in my Black Cougar yesterday, (he has a mustang GT) at about 80, both back tires smoking, as it shifted into third...Man, I love these cars...
He told me today he's selling his 'stang...
(No, I was not on a public road, if you were wondering...)
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote