Chevro_Runna

I have a 1988 Chevy S-10 EXT cab 4.3 4X4 pickup I have put tons of work into this truck and it still doesn't go right. The truck goes good but when it goes from first to second gear it studders and hesitates and doesn't have the power it should have it also does it under pressure like climbing hills it doesn't do this when it's cold only warm if i push the throttle harder it will push past this if it is in neutral and i push the throttle it will skip and hesitate like it does when i drive it, it isn't the tranny because i just had a new one put in then know i have this problem i think it might have a short in wiring but i don't know where i just tuned it up and it didn't help. Any help would be appreciated.