hesitation in response when the gas pedal is pressed
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never, my car has been sitting for 2 yrs before i bought it, i put a radiator, water pump, thermostat, and my brother had the engine rebuilt before he put it away.
Check your timing and make sure you're at least running at 10* BTDC. I would go ahead and advance the timing to 12*.
The fuel thing could also be an issue. If you're running off of 2 year old gasoline, I give you a BIG . I've seen what gas can do even after just sitting for a few months. Not pretty...
Change the fuel filter, and hopefully the fuel pump is OK...
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-1994 Mustang GT "The Red Baron": 3.73 gears,K&N filter,GT40 tubular intake,BBK Full Length Headers,modified midpipe & Flowmaster muffs, timing at 12*. Best time- 14.74 @ 93.16 -Check profile for pics of our car collection! - AmericanMuscle ROCKS!! - "True Hot-Rods don't have valve covers!"
Definetly need to syphon the old crap out and fill w/ good premium or reg. If your going to advance your timing to 12* then use premium otherwise no need but check your timing to be @ 10*btdc. You will need to do a complete tune-up: Plugs, wires, cap, rotor, oil, filters, etc. Get a can of starting fluid a spray aroumd your intake while idling to check for a bad gasket or hose.
Most of the guys in here more than likely got it right when they are saying its bad gas or it just needs a nice tune up. If you already ran the gas might as well run it all out and then tune it up and change everything. Trying to syphon it out you are not going to get everything. No two mustangs are alike in throttle response. I have has some better than others. Most people overlook tps.
Throttle position sensor its located right on top of the throttle body it needs to be calibrated to I can't remember the voltage but is pretty specific. Thats a good point.
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03 cobra vert black mostly stock
02 maxima 255hp Daily Driver
(SOLD) 2003 Mustang GT Procharged 374.3 rwhp
(SOLD) Bolt on 1990 GT 5sp conv "Blackbeauty90GT"
green to black should read .98v or as close as possible (loosen screws to adj then carefully retighten while holding in place) but thats probably not going to give it hesitation.
green to black should read .98v or as close as possible (loosen screws to adj then carefully retighten while holding in place) but thats probably not going to give it hesitation.
i AGREE i recalibrated my TPS a couple of weeks ago and i could tell a difference as soon as i started my car. the have been several threads about this subject-i would search the site so you can make sure you are doing it correctly. the car has to be off, the key has to be in the "on position" (when calbirating your voltage). then you need to start your car and recheck your idle screw on your TB. my car(5.0/5speed) is set at a 750RPM for idle, yours will vary based on year and transmission.
to add to the fuel thing, after syphoning out the old junk-add 1/2 a can of Sea-Foam to your tank and run it-you can pick it up at any auto parts store for around $8. good luck!!
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86 GT Vert, Black, T-5, MAC shorties,40 series flowmaster 2-1/2", O/R X, CAI, EXP2 Upper and Lower, EXP2 injectors, 65 mm TB, Electric fan, 4:10's, 180* T-stat, MSD coil, cap and button, Taylor wires, 17x9 Cobra R's
07 Dodge Magnum. Electric Strawberry(Red), leather, DVD headrests(for the kiddos).....the grocery getter with an attitude!
TPS out of range can result in a Hesistation. The ECM uses the TPS, MAF to determine what type of load condition is on the engine, then uses spark and Fuel as neccessary
Not saying it his Problem, but it can happen.
Change Gas, change Plugs and wires, cap and rotor.
Run the Diagnostic codes. Doesnt matter if the Check Engine Light is on or not.
hesitation in response when the gas pedal is pressed 
. I've seen what gas can do even after just sitting for a few months. Not pretty... 
