Hi, thanks for loooking. Ok i have a 1990 cheyanne, ran fine while i drove to the bank. Went in came back out and wouldnt start. Tried a few times...nothing. Waited about 20mins and it started up! Drove back to work bbut it was chugging and had no real power in it. When i left work it started fine got a block away and it stalled. Now it wont start. Lots of battery and cranking power. Lots of gas? Have no clue what to do. Please help. Thanks