Why would there be occasional hesitation with acceleration?

1994 BUICK ROADMASTER
140,000 MILES
Avatar
TRINA2012
  • MEMBER
  • 3 POSTS
There have been a few problems with this vehicle, but the most recent is after obtaining a new battery the vehicle's lights and the sound from the radio, along with the speedometer would "pulse" at certain times. Not any particular thing would instigate it, or make it stop. Then after a few months it started having issues with acceleration usually after a particularly bad case of the "pulsing". It would do it once, or 10 times, then eventually "catch" and drive normally. I thought it seemed like an oxygen sensor, however it seems to be closely related to the "pulsing" so now I don't know what it could be.
May 31, 2012 at 10:15 PM
Advertisement
Avatar
SATURNTECH9
  • ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
I would have the alternator tested and make sure the battery cables are clean and tight.
May 31, 2012 at 10:34 PM
Avatar
TRINA2012
  • MEMBER
  • 3 POSTS
The alternator was tested when the battery was, and then after the battery was replaced and it is fine. The cables are like brand new, the only other issue with the battery was the ground wire needed to be tightened which a mechanic that did some other work told me he did.
May 31, 2012 at 11:02 PM
Avatar
SATURNTECH9
  • ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
I would still check the negative and postive battery cables i have seen most of the inside of the battery cables all corroded up and show no signs of corrission on the outside.
May 31, 2012 at 11:10 PM
Avatar
TRINA2012
  • MEMBER
  • 3 POSTS
I will do that tomorrow morning then, thank you for your assistance :)
May 31, 2012 at 11:37 PM
Avatar
SATURNTECH9
  • ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
Your welcome let me know what you find.
Jun 1, 2012 at 1:28 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.