Re: Blowing ECM \"B\" fuse ***Update***
The problem is solved. Hardcore 71 is right. On friday I started running continuity test on the truck and found a short from the tan and white fuel pump signal wire to ground. Continued tracing it until it hits the firewall and splits in 3 (oil pressure s/u , fuel pump relay, and ecm. Traced it to B2 on the ecm wiring harness and it is shorted to ground. The gray wire on both the oil pressure s/u and the fuel pump relay are shorted to ground but they are shorted somewhere in the harness behind the engine. I am sick of TBI so we are "changing" the jimmy. We are going to pull the engine and tranny and t case. PUll all the wiring complete with ecm. (tbi 350 and complete 90 wiring harness will be going for sale). Drop in a carburated 402-t350-twin stick 205 (where is the right up for a twinstick 205 and is a 71 205 the right style for the doubler). We are then going to run a simple painless wiring kit and put everything on toggle sw. Put the 52's in the front w/ crossover and the 57's in the rear. Cut off the top cage it with 5.13's and lock it front and rear. And put on Hydraulic assist. So the journey will now begin.
The problem is solved. Hardcore 71 is right. On friday I started running continuity test on the truck and found a short from the tan and white fuel pump signal wire to ground. Continued tracing it until it hits the firewall and splits in 3 (oil pressure s/u , fuel pump relay, and ecm. Traced it to B2 on the ecm wiring harness and it is shorted to ground. The gray wire on both the oil pressure s/u and the fuel pump relay are shorted to ground but they are shorted somewhere in the harness behind the engine. I am sick of TBI so we are "changing" the jimmy. We are going to pull the engine and tranny and t case. PUll all the wiring complete with ecm. (tbi 350 and complete 90 wiring harness will be going for sale). Drop in a carburated 402-t350-twin stick 205 (where is the right up for a twinstick 205 and is a 71 205 the right style for the doubler). We are then going to run a simple painless wiring kit and put everything on toggle sw. Put the 52's in the front w/ crossover and the 57's in the rear. Cut off the top cage it with 5.13's and lock it front and rear. And put on Hydraulic assist. So the journey will now begin.
