I just changed the air filter on my 91 Plymouth Laser 1.8. I also sprayed some throttle body cleaner in the throttle body while I had the air intake hose on. I put the new air filter in and reattached the air intake hose. Now, the car idles around 1400 RPM's and then it will drop down to a 1000 RPM's and continues doing this up and down idling every couple of seconds. Other than that, the car runs OK. The air filter was extremely dirty that I took out. A neighbor of mine said that since it was so dirty, the computer has to find the correct air/fuel ratio since now it has a new air filter in it. Is this true? If not, what is causing this up and down idling every couple of seconds. Thankx. Gary
have the same problem?
Wednesday, May 9th, 2007 AT 4:43 PM