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1995 Oldsmobile Achieva Slows down and speeds up on own

Tiny
CHELSEANAOMI
  • MEMBER
  • 1995 OLDSMOBILE ACHIEVA
1995 Oldsmobile Achieva 6 cyl Front Wheel Drive Automatic 106k miles

I will be going a certain speed then all on it's own my car will slow down for a second then speed back up. It hasn't done this for a few months after I bought it. But I got a under body car wash yesterday and it did it on the way home. And it has been doing it on and off ever since. What could cause it to be doing this?
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Friday, October 15th, 2010 AT 7:52 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the vehicle speed sensor and oxygen sensors-check the wiring connector
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Friday, October 15th, 2010 AT 8:37 AM
Tiny
CHELSEANAOMI
  • MEMBER
  • 4 POSTS
Does it have something to do with under the car or under the hood?

Do you have a diagram?
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Friday, October 15th, 2010 AT 8:43 AM
Tiny
CHELSEANAOMI
  • MEMBER
  • 4 POSTS
I don't have any plug wires or distributor cap.
Also, It's a 4 cylinder not 6.
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Friday, October 15th, 2010 AT 10:01 AM

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