My 87 Jimmy 2.8 just started acting like it is vaporlocking, it's either a fuel delivery problem, or ignition.
It runs great, when I first start it and drive for awhile but starts stuttering once it's warmed up, which has me thinking its a sensor. The engine has 160K on it and normally runs great, I have never changed out any of the sensors so I am thinking of starting with the MAP sensor, and then the O2 sensor, the plugs are maybe 2 years old so they would be next on my list (but if one was fouled it should not run good until it warms up
), does anyone have any other recommendations?
I believe the KEY here is that it runs great before it warms up, and I THINK that the sensors and computer don't start doing there thing until its warm?
It runs great, when I first start it and drive for awhile but starts stuttering once it's warmed up, which has me thinking its a sensor. The engine has 160K on it and normally runs great, I have never changed out any of the sensors so I am thinking of starting with the MAP sensor, and then the O2 sensor, the plugs are maybe 2 years old so they would be next on my list (but if one was fouled it should not run good until it warms up
I believe the KEY here is that it runs great before it warms up, and I THINK that the sensors and computer don't start doing there thing until its warm?