05-10-2019, 11:06 PM
ok, fuel pump test...1. keyon 42psi(only leak down to 35psi after 4 mins)
2. idle 33-35 psi. only thing i did notice was when i gave it gas the pressure would go up to about 42 psi then back down to 33psi at idle
i did put a leaf blower on the MAF and got it to put out about 3.8v. i also put a calibrator on the MAF input wire going back to the ECU and started out at 2v at idle. as i increased the voltage the idle started getting rough(as i assume the ECU was receiving that signal and adjusting the EFI). i had to give it gas to keep it running as i increase the voltage to the input. it would still try to bog down until i got above 4.8v then it seem to run better. i know that i could not vary the signal like i would be if it was coming from an MAF. so maybe MAF is no good. just odd that i had to get it to almost 5v before it would run right. does the MAF vary from 2v at idle to 5v at wot? i would have thought with a leaf blower i could have gotten the MAF to max out at 5v. so maybe it bad.
2. idle 33-35 psi. only thing i did notice was when i gave it gas the pressure would go up to about 42 psi then back down to 33psi at idle
i did put a leaf blower on the MAF and got it to put out about 3.8v. i also put a calibrator on the MAF input wire going back to the ECU and started out at 2v at idle. as i increased the voltage the idle started getting rough(as i assume the ECU was receiving that signal and adjusting the EFI). i had to give it gas to keep it running as i increase the voltage to the input. it would still try to bog down until i got above 4.8v then it seem to run better. i know that i could not vary the signal like i would be if it was coming from an MAF. so maybe MAF is no good. just odd that i had to get it to almost 5v before it would run right. does the MAF vary from 2v at idle to 5v at wot? i would have thought with a leaf blower i could have gotten the MAF to max out at 5v. so maybe it bad.