greddy32

It did stay connected but only 1 time for some reason. I've tried a couple times since and the ecu always disconnects

45 drops from 12.5 to 7.73 while cranking

Off topic but which was is the correct way to wire a radiator fan? 30 batt 87 fan 85 ecu 86 switched 12v Or 30 batt 87 fan 85 switched 12v 86 ecu

Okay my son is asleep for the night so I won't be able to test any cranking until tomorrow. To your example, my fuel pump is getting 12v triggered from the trunk, it's reloomed but I'm assuming it's the circuit you're referring to. Where would I grab 12v from thats not on the same ignition switch?

So I'll retest test with 45 and ground and let you know what it says.. if it's low whats the solution? A new ignition barrel? Also would running all ecu grounds directly to a batt(-) stud help at all?

What should voltage be on 45 whioe cranking? And am I testing it correctly?

It doesn't show any voltage on 45 while cranking or ever for that matter. 1 lead on 49 the other on 45 while testing

Hey Adam, my g4+ is from 2019 do you think that it's possible my mosfet is bad? I was reading a thread between you or Simon and godzillamf, he seemed to be having the same issue that he solved by running a relay to pin 16.

okay thank you

so from the header should i run each ground to its own location or can i use a batt neg. stud i have on the firewall?

Pin 16 was left in the header I used a piece of welding wire to poke through the back of the header and touch the terminal, from there I ran a jumper from chassis to pin 16, this left the ecu on even when the car was off when I removed the jumper the ecu powered down. The harness has had unused connectors removed i.e. no power steering, no abs, no ac, no heater No wipers, no defrost it's bare bones essentially. The car was just on a rotisserie for the past year too.. can you see much from the logs? Or scope?

so sorta strange... the car starts now... ill attach everything i collected the car is just idling on my lift with a few revs. i also grounded pin 16 and got 1 log of it cranking then that didnt work anymore for some reason, but the car runs both with with pin 16 grounded and not grounded. the ecu also looses connection both ways too, ill tripple check that in like 30 min to confirm. also with pin 16 grounded when i turn the car off the ecu starys on im assuming this is normal if pin 16 in grounded? Trigger Scope Log 2024-04-23 1;58;17 pm crank no start.llg Trigger Scope Log 2024-04-23 2;15;45 pm 2.llg random start.llg running 2.llg running.llg

Hey Vaughn this is what I came up with 49 grounded to frame key on is 13v then drops to 9.48 while cranking 49 to 10 cranking is 8.75 49 to 20 8.87 49 to 107 8.72 49 to 108 8.68 49 to 116 8.63

Hey Vaughn, the wifey got a flat tonight I'll have to get with you tomorrow if you're available.

Hey Vaughn are you available in about 1.5 hours? Gonna head out to the garage when the baby wakes up