Bought an 89 YJ today that has a rough idle. I pulled the fuel injector out and cleaned it up a bit and it ran good for about 5 minutes or so and went right back to the rough idle. I have been told it could be the MAP sensor as well that causes this. I have checked the vaccuum hoses for leaks and haven't found any yet. Also, the TBI unit seems to make a fluttering sound when its running. Could it be that I need to replace the fuel injector???
Thanks,
brian
