1991 Dodge Stealth intermittent hesatation-iddle sometimes

1991 DODGE STEALTH
12,500 MILES • 6 CYL • FWD • MANUAL
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PONTIAC121
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hi im a shop owner for over a year -i have over 13 years in the field and i got a customer car , a 1991 dodge stealth 3.0 dohc -stick-non turbo-alrite this is whats up , the car runs good no codes - i did a tune up ,new plugs wires cleaned the throttle body,and a coil -it was arking,

it has a problem when on the highway in fifth gear when you put a load on the motor it feels like the throttle has a dead spot -it will clime in rpms a little the when it hits 2500 rpms it will jump and feel like it wants to take off-it felt like a bad tps sensor -so i tested the voltages and everything is ,i even tried a new sensor -no luck- i thought it could be a mas air sensor - same thing -i tested the wiring and even tried the sensor -nope ---so i need help !!!!!!! were would you go next ??
May 7, 2010 at 6:27 PM
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MERLIN2021
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When you cleaned the TB did you see any sign of wear? Plate move side to side or up and down (play)? Or a ridge worn into the horn?
May 8, 2010 at 8:16 AM
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PONTIAC121
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no signs of play -and no vacume leaks !
May 8, 2010 at 3:41 PM
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MERLIN2021
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Only thing I can think it could be is maybe a few bad injectors, Sticking open too long?
May 8, 2010 at 11:11 PM
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PONTIAC121
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but how would that cause the feeling like a bad tps under load ?
May 9, 2010 at 8:03 PM
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MERLIN2021
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Pulse width is too wide(open too long) on one or more injectors, can cause cylinder balance problems, flooding out... check all plugs for signs of fuel fouling.
May 11, 2010 at 9:29 AM
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PONTIAC121
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no signs of fauling i changed the plugs wires and a coil pack 3 mths ago-

no vacume leaks i smoked the intake and no leaks -
Jun 5, 2010 at 10:10 PM