What do I do To fix it?
My car sputters really bad if I mash on it from the light wants to get up to 50 and 60 if I try to mash on it again to get over it's butters as if it's not picking up then the engine light starts blinking

The era of the big boat sedans has long since sailed away, thanks to the 1970s energy crunch, but somehow the Bonneville has endured and managed to shift its image from old lady driving slowly on Sunday car to a modern, sporty performance sedan. There were few major changes to the 2003 Pontiac Bonneville. Once-standard side airbags are now only an option on the SE and SLE trims. Front bucket seats get more power adjustment for reclining and lumbar support, and XM radio is added to the options list. The 2003 Bonneville is sports-oriented, even without the supercharged V6. The SE and SLE are aimed not at grannies, but at a younger family market looking for practical roominess and trunk space along with style, performance, and sporty handling. The SE and SLE come with a 3.8-liter, 205-hp V6, while the SSEi features a supercharged 240-hp version of this engine. A 4-speed auto tran allows you to switch between normal and performance modes. The SSEi has sports suspension, rear spoiler, a heads-up display projected onto the windshield, power leather seats and variable steering. But even the SE gets supportive glove-like seats, cruise control, ABS brakes, power locks and mirrors, and remote entry. The SLE falls somewhere in between the two, sportier than the SE, but with fewer standard features than the SSEi. The supercharged engine is a favorite of 2003 Bonneville owners, who like its highway performance and immediate acceleration action. The heads-up display gets high marks for allowing you to keep your eyes on the road. The Bonneville features sporty handling, a smooth ride, and tight steering. It is also very roomy, with a large trunk. 2003 Bonny owners complain about wind noise and lack of room in the backseats, particularly headroom. Cupholders are badly made as are most of the plastic parts. The way too busy dash is complicated and hard to get used to, say drivers. Many wish the rear seats had a fold-down option instead of just a trunk pass-through in the armrest.
My car sputters really bad if I mash on it from the light wants to get up to 50 and 60 if I try to mash on it again to get over it's butters as if it's not picking up then the engine light starts blinking
How much does it cost to sell a car on your website?
My car stops running as I am driving down the road and wont restart I have already replaced crank sensor and the idle position sensor
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Front side airbags
Audio System
Single disc in-Dash CD · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Steering wheel trim: leather
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio
Lights
Exterior entry lights: security approach lamps · Headlights: Auto on/off
Mirrors
Exterior mirrors: power · Inside rearview mirror: electrochromic
Rear Seats
Type: bench
Roof
Moonroof: power
Seats
Front seat type: split-bench · Heated: front seats · Upholstery: leather
Suspension
Air Suspension: rear · Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Leveling: self leveling suspension · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): front
Tires and Rims
Wheels: steel
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Front side airbags
Audio System
Single disc in-Dash CD · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Steering wheel trim: leather
Convenience Features
Dimming rearview mirror: auto-dimming · Multi-function remote: keyless entry · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio
Lights
Exterior entry lights: security approach lamps · Headlights: Auto on/off
Mirrors
Exterior mirrors: heated
Rear Seats
Type: bench
Roof
Moonroof: power
Seats
Front seat type: bucket · Heated: front seats · Upholstery: leather
Suspension
Air Suspension: rear · Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Leveling: self leveling suspension · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): rear
Telematics
Satellite communications: OnStar
Tires and Rims
Wheels: chrome
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Front side airbags
Audio System
Single disc in-Dash CD · Premium Brand: Monsoon · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Steering wheel trim: leather
Convenience Features
Dimming rearview mirror: auto-dimming · Memorized settings: driver seat · Multi-function remote: trunk release · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio
Lights
Exterior entry lights: security approach lamps · Headlights: Auto on/off
Mirrors
Exterior mirrors: power
Rear Seats
Type: bench
Roof
Moonroof: power
Seats
Front seat type: bucket · Heated: front seats · Upholstery: leather
Suspension
Air Suspension: rear · Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Leveling: self leveling suspension · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): front
Telematics
Satellite communications: OnStar
Tires and Rims
Wheels: chrome