Sounds like it could be the Vehicle Speed Sensor (VSS), but you might check the wiring connections at the sensor which is mounted on transmission.
You can replace your 1998 Buick 3.8 liter engine with a Buick 3.1 liter engine. You will need to change the motor mounts and some of the wiring harness will need to be modified.
3.8 liter
200 hp for 3.8 liter and 240 for 3.8 liter super charged
Where is the power steering fluid for a 1997 Buick Regal LS 3.8 liter engine?
A 2000 Buick uses Dexcool.
what is the torque specificationfir the rockerarm bolt on 1991 Buick le Sabre v-6 3.8 liter
The 1992 Buick Regal GS The 3.8 liter V-6.
It will affect the speedometer but the tachometer will still be accurate.
Yes
Check the rear end. My Ford F-150 has the speedometer connection on the rear end housing.
2.3 liter 4 cylinder or 3.1 liter V6
That might be the PCV pipe or some other vacuum leak. That will cause stalling.