philly3384

If i am idling and i go to rev the car it doesnt rev up itll take me like three times to get to be a crisp response. When i pin it itll take a second to kick in and then finally go. I changed Cap, rotor, plugs, wires, fuel filter, and just added some fuel injector cleaner and neither seem to have done it. What else would would you guys suggest?

IownaMustangNow

is it an automatic?

roundman

have you adjusted the TPS output voltage to .98 volts with the throttle closed???
this will make the computer respond better to any movement of the gas pedal.

philly3384

yeah it didnt work

silver91gt

I have the same problem, and would like to know if a bad tps could cause this?

philly3384

I changed that too and set it.. that did nothing..

Predator

Maybe pop the hood and watch the tb as you give it some gas; and clean it. I guess giving the intake a good look might be worth it.

grabbem88

are you talking about backing the idle screw all the way????or just with the butterfly closed??

Aliate X

I have the same exact problem man! Also when I nail the gas in gear, it like boggs its way up to 4k rpms or so and occasionaly pops really loud, sorta like a backfire from the engine compartment. After doing it 3 or 4 times though, its fine. I also replaced the fuel filter behind the tank, cap, wires, rotor, plugs, ECT sensor, and nothing. The wires helped a little considering one of my last ones was blown wide open. Still not much of a diff though.

grabbem88

i'm thinking your car as well as most 5.0's on here is having a "loading up" problem??...if i drive mine normal it will have alittle hesitation prob...but it's very slight.....if i take the ol'girl out and open her up she's fine for a couple of day's...then again i think it's time
for a re-tune.