02-15-2021, 03:52 AM
Hey there mr Fix
Think we’ve got our wires crossed on the maf. I do have 12v on the blue black wire to the maf. Got 7 or more at idle on the gray black wire back to ecu.
I jus rewired the tps and pulled the o2 ect maf wires out of the ecu harness connector. So far so good. Def does run rich but... runs... so far. Have had it go 3 weeks n then drop my 5v to the tps so we’ll see.
I want to prove it’s somewhere in those wires at least so I can start to narrow it down one at a tone somehow.
Something interesting is that it used to have a bad lag somewhere bout 3500 rpms before and now it doesn’t? Maybe one of the either grey wire back from tps or blue white wire?? Dunno.
Tested these wires and sensors every which way including pulling sensor wires out of ecu connector and sensor and load testing each wire. Haven’t found anything wrong except the maf but even with those wires pulled from back of ecu still would end up dropping my ref. Sooo I got something else goin on somewhere.
Thought once this thing runs awhile hopefully. I’d clip my tester to each sensor wire unplugged from ecu. Drive it around for awhile and watch for something out of whack. It’s just so intermittent that seems I’d have to watch each sensor wire for a month In order to rule it out since it’s run just fine for 3 weeks n the past. Something like that. Need a way to watch each sensor and wires for awhile and rule them out.
Or... tell me what you think. Rerun All these sensor wires? Guess could still be the sensors so maybe replace these too?
Where it’s at now if I drop my ref vol again then it must the ecu power or ground or sensor ground???
I’d love to take each sensor and plug them back to the ecu one at a time but I don’t want to blow another ecu.
Thanks for your time and insight there mr
Think we’ve got our wires crossed on the maf. I do have 12v on the blue black wire to the maf. Got 7 or more at idle on the gray black wire back to ecu.
I jus rewired the tps and pulled the o2 ect maf wires out of the ecu harness connector. So far so good. Def does run rich but... runs... so far. Have had it go 3 weeks n then drop my 5v to the tps so we’ll see.
I want to prove it’s somewhere in those wires at least so I can start to narrow it down one at a tone somehow.
Something interesting is that it used to have a bad lag somewhere bout 3500 rpms before and now it doesn’t? Maybe one of the either grey wire back from tps or blue white wire?? Dunno.
Tested these wires and sensors every which way including pulling sensor wires out of ecu connector and sensor and load testing each wire. Haven’t found anything wrong except the maf but even with those wires pulled from back of ecu still would end up dropping my ref. Sooo I got something else goin on somewhere.
Thought once this thing runs awhile hopefully. I’d clip my tester to each sensor wire unplugged from ecu. Drive it around for awhile and watch for something out of whack. It’s just so intermittent that seems I’d have to watch each sensor wire for a month In order to rule it out since it’s run just fine for 3 weeks n the past. Something like that. Need a way to watch each sensor and wires for awhile and rule them out.
Or... tell me what you think. Rerun All these sensor wires? Guess could still be the sensors so maybe replace these too?
Where it’s at now if I drop my ref vol again then it must the ecu power or ground or sensor ground???
I’d love to take each sensor and plug them back to the ecu one at a time but I don’t want to blow another ecu.
Thanks for your time and insight there mr