SPONSORED LINKS

1989 Chevy Beretta Rough Idle Idles up and down RPM's

Tiny
MYERSRANGER
  • MEMBER
  • 1989 CHEVROLET BERETTA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
Rough Idle. Idles up and down on RPM's Gauge.
Does it need a Idle Speed Control? What Corrective Action Needs to be Taken. Also What Parts are Needed for a Complete Tuneup?
Monday, October 26th, 2009 AT 3:35 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Before replacing anything, has the check engine light come on? It could be a throttle position sensor (TPS) or idle air control valve (IAC) or as simple as a vacuum leak. Without a check engine light and trouble code, it becomes a guessing game.

Take the car to a nationally recognized parts store if the light is on and have them scan it. Most will do it for free.

As far as a tune up, spark plugs, plug wires, distributor cap and rotor. I usually like replacing the fuel filter and checking the air filter and PCV valve.

Let me know what you find with the light.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, October 30th, 2009 AT 10:00 PM

Please login or register to post a reply.

Related Engine Idle Erratic Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Idling High
GUIDE
Idling High
Intermittent sensor failure or shorting can cause the computer to act strange with unusual side effects, these problems are particularly tough to diagnose. The computer...
VIEW MORE

Sponsored links