Hey all, I'm looking at buying a '93 Chevy 1500 as a beat-around truck. It's got a 4.3L and automatic trans. Odometer has 267,000 on it, but the tranny and engine are not original, as claims the seller.
I test drove it and it runs and drives. But it has a hesitation, or roughness to it. I was just wondering if anyone had some tips as to what could be causing it. It runs fine at idle, and seems to run fine at full throttle. But just taking off and driving down the road normally, it runs rough. It has a noticeable shudder to it while running down the road. No check engine light at all. I didn't try to pull any codes off of it though.
Could this be a bad TPS? I looked into the TBI while it was idling and the injectors looked to be working normally. I don't know anything about fuel-injection or computerized vehicles, so any help would be great.
Thanks, Tony