I just had a mechanic come by my house and the weird this is he said that my ECU isn't throwing any codes. He also informed me that me car had a wire that hooks up to my headlight fuse, straigth to my fuel pump.
I think I have to replace my ECU and MAF.
Do you guys have any other idea on what the problem could be?
Find out why somebody hot wired the fuel pump. Bad Fuel Pump ECU being bypassed? Cheap fix could also be constantly feeding power back into Fuel Pump ECU and Engine Control Module with unknown and unpredictable results. Try to solve one problem at a time, the right way, before moving on to next problem.
That is a good idea. The fuel pump only works not if my headlights are turned on. When I turn them off it cuts the power. I think the fuel pump ecu is another problem too. The main reason for all of the questions is I'm trying to make what ti last until July. Then I'm doing the complete 1JZ-gte swap. Let me look futher into the problem and actually take time to think about it rather than jumping the gun./
Thanks for the info.
okay like he said above solve one problem at a time, it might fix the other issues. the lexus is a very complex beast and two things that u would think have nothing to do with each other seem to coincide. first and foremost. disconnect that fuel pump wire from the headlamp fuse. then check the connections at the pump itself. if its plugged in, go to the fuel pump ECU located in the arm rest panel on the driver's side in the back seat. make sure the ecu is plugged in. small silver box with fins on it. attempt to start the car. if u get a no start, disconnect the fuel pump ecu and take the two larger gauge wires from the harness and plug them into each other. attempt to start the car. this bypasses the ECU the proper way. it also ensures u have constant power with the vehicle in run mode, and the proper amperage and voltage. if u get a no start that way, check to make sure ur fuel pump fuse is still intact. after that ur car should be running. then check ur other issues. private message me if u need more help.