background: His car wouldnt start anymore. Came over and checked it out with him, he wasnt getting spark, injector pulse, and the fuel pump wasnt coming on. So essintally the computer wasnt turning or something. Check all his grounds, they seem to be fine.

Later on some else came over and checked, and found out his computer was only getting 5v of power. So they ran a power wire inline and it started right up. I told my boss also of this problem and what they did to fix it. He brought that the wire they used could have been the 5v reference for the sensors. But since the car started up and runs everything was good. But I believe matt said his CEL has been on ever since and his gas mileage is horrible.

Fastfoward to sunday, I come over to help set his idle and tps. When I checked the TPS with the multi-meter, He was getting 5v at all three wires...

What does it sound like?