At first it threw P0103 circuit high some people told me its the MAF so changed it to another used one and same code poped up bought TSP 100mm as I will mod the the truck in this month searched for the wiring decoding and hooked it up and the same damn code is there toke the truck to the tuner told me check the fuses and I did and all of them are fine so I told him tune it to speed density because I want to use the truck its my only transportation and he did the truck made 303whp on 2nd gear out of 4.8 drove the truck two days and today the check engine light poped up again toke it to a friend that has scanner scanned it and these are the codes that shown P0748,P0463,P0322 and P0103 all of them are circuit related issues whats going on with this truck? Im just 1 inch away of converting to carb but I dont want to go to that route where should I look for problems? I noticed something in the fuse box all the fuses and relays are stuck/hard to get out should I clean it with electrical spray first and see from there? I read here that some faulty pcm can cause those problems

 

Stop replacing parts and Diagnose the codes.

Have you checked your grounds and connections at each circuit with a fault code???

Most of those are circuit fault codes.

Make sure the wiring is good and that you have continuous circuit and no corrosion at each end.

For good measure, have you Checked your fuel pressure???

 

Oh another thing I just remembered when I unhook the negative cable from the battery then hook it it acts like I hit it to positive side it sparks alot and I learned from a guy that its not supposed to spark when you hook the battery just very little sparks are fine but not too much what causes this? Maybe the codes are related to this problem and the wiring is the stock and standard one on it but the previous owner used to take the truck to fix it in a garage that has bad reputation so maybe the a.hole did something to the wiring while he fixed the parts or something

 

Anyone??