I have a 1990 Oldsmobile Cutlass Ciera V6 that has had a problem for a while now that I can't seem to pin down.
When I start the car and it is in closed loop, it seems to run with minimal problems, only some minor missing of the engine.
I will drive down the highway for a while and after the car warms up it will start to act weird, such as missing to the point where I can feel and hear it. It also seems to happen when changes in the gas flow happen, such as when decelerating or accelerating. It is also a problem for keeping a steady speed cause I can feel the car misfiring.
Another symptom I have is when idling, mainly after driving for a while, it will have a loping erratic idle, and the RPM's dip so low sometimes that it seems to want to stall, and one of the ways that I can deal with this is to throw the vehicle into neutral and the loping idle will turn into a very rough idle with the engine shaking sometimes.
Also related is when I lightly accelerate from a stop some times the vehicle will stutter like some one is******** the front of the car over and over.
Another symptoms that I have seen is that when I have the vehicle in park and the engine turned on, and I rev the car suddenly, the vehicle will stall. I have to rev it gradually in order to keep it from stalling.
Another Weird problem I have that may or may not be related is the fact that while I'm driving at night and I hit speeds between the 65 MPH marker and the 70 MPH marker, my car will start to buck and the headlights begin to flicker. It does this randomly at other speeds, and very infrequently, but between those speeds I can get it to do it consistently.
I am really stumped by this problem. Any help would be appreciated!
have the same problem?
Monday, July 4th, 2011 AT 7:55 PM