Hey Guys,
I have a 1991 GMC Sonoma 4.3L that has 106K original miles and is running really strange. It has a bad hesitation promblem around town and going up a hill, forget about it. Now if I'm going along about 40 or 50 MPH and mash on the gas, it acts like it's not getting any gas and actually looses power and speed, rapidly. Can anyone help me with a possible direction before I take it to the shop. Please, thank you.