Having problems with your 1997 Chevrolet S-10 Pickup ?
Very poor gas milage on 1997 s 10 4.3 vortex motor
You know I have seen this before and it could be just that a good tune up could help, from wires to all the filters but I wanted to tell you a problem that I found on the 4.3. I found one time that the thermostat had stuck in the open position causing the computer to think that the engine was cold all the time, thus dumping more fuel into the motor all the time. Now this may not be your case at all but if you are getting really bad mileage then it could very well be your solution. The thermostat is not that expensive and depending on your skill level can be done at home.
Repair Help & Product Troubleshooting for 1997 Chevrolet S-10 Pickup
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.