Engine Mechanical problem
1998 Chevy Monte Carlo 6 cyl Front Wheel Drive Automatic 168000 miles
I have a 1998 monte carlo Ibought about a month ago, When I got it a code quickly came up and I had it scanned and reset, It read EGR flow insufficient. It came up again. The only problems I felt in the engine was a very occasionaly msifire while idling once the car was warmed up, sometimes a slightly rough idle while at a stop. THis rough idle would go away if I put it into park then into gear.
Well a couple days ago I was coming home on the highway, and all the sudden my tach started jumping all over the place so I turned down my music and I heard it misfiring. I dropped my RPMS and rode the rest of the way home with an occasional misfire that would almost stall the engine.
When I got home the car stalled out when I put it into park and got out to open the hood. It wouldn't stay running at all, the idling was incosistent and it would miss and stall out. If I gave it gas, once it approached 2500 RPMS it would misfire very heavily and not go over 2500 RPMS at all.
THe next day I started the car and it idled fine and smooth, but if I gave it gas it would start missing at 2500 rpms, I can run it at 2000 rpms fine with no missing.
I took the egr valve off and put some carb cleaner in the tube and started the car up
the one side of the EGR valve that goes into the intake is sucking in air pretty well, whereas the other side is pushing out air.
I'm not sure where to go with this problem now as i've never experienced anything like it.
I have the 3.1L v6 engine " M"
Saturday, September 12th, 2009 AT 9:21 PM