Bonneville that sputters with acceleration

check wheel alignment and wheel weights

Does it use spark plug wires or individual ignition coils for the each plug?. My 98 intrepid uses coils and occasionally I have to change them out cause it would start to miss when normal temperature was achieved. If it uses wires, try replacing them, along with the spark plugs.

It is a clear case of the fuel pump malfunctioning. As not enough fuel is being pumped when accelerating, the engine sputters and stalls. The pump could be needing servicing. Nothing serious. Happens. So, please have it serviced.

check your catalytic convertor for blockage

sounds like the ignition module is going bad.

clean throttle body intake ,,,run cleaner, thru injectors or carb, check all air hoses and tighten,check air filter,,,check idle air,,,or replace idle air,,,they go bad

Haynes manual should be easy to find for it. Diagrams are about 1/3 of the back of them.

I just went through lots of troubleshooting and expense on my 1996. Whenever I would lift my foot off the accelerator and was below about 30 mph, the rpm's would starts jumping around and sometimes it would stall. If I gave it a little gas (accelerator), I could sometimes keep it running. It also backfired once in a while. Starts right back up. Also, if I let it idle while in part, it would die after 1-2 minutes.

I ended up finding a hole in the fuel regulator. About a ~$70 part if you get an AC Delco, but very simple to change.

first thing is the engine light on?
these cars had problems with the on plug ign coils and if this is a misfire the comp will tell you which cyl is the problem.

The idle air control solenoid could be bad. give the engine a vacuum leak and see if that helps any