10-23-2013, 08:24 AM
Okay internet fanbois, if you just like to see finished clean projects, dont look below.
I always leave wiring out and test before I clean things up and put them away. This was learned from many mistakes of cleaning it up, putting it away, and then having to pull it all out to figure out why something does not work. I left all the wiring out for this project especially. Merging an LS1 98 harness with an OBD2 M3 harness is not simply plug and play. There are no instructions, it was all researched by me looking through wiring diagrams. Unfortunately it would have been much easier had I gone with OBD1, and a 99-2002 f-body wiring harness as those are well documented at this point.
Yesterday I had fixed the dead on arrival relay that was in part of my harness connecting power to the rest of the car. After I Fixed it though the car would not start. I was not getting power from the ECU, even though power was going to the ECU. The battery was very weak so I decided to charge it up overnight and check it out the next day.
I got home late last night and just wanted to see if I could quickly find out the wiring issue. So I hooked up the freshly charged battery, and clicked the keys into the on position. VROOOM!!!!! The sound is soooo noticeably different than an inline 6 I was actually caught by surprise. It definitely is weird to hear 5.7 V8 sounds out of this car.
Turns out the ECU just needed enough juice in it to send power to the fuel pump. She starts!
If I get some time tonight, I will be doing the learn procedure on the TPS and IAC, cleaning up the wiring, and hooking up the coolant hoses. Then I will do another test-fire before she gets buttoned up.
![[Image: 1374864_10101355430188909_1749526657_n.jpg]](https://scontent-a-dfw.xx.fbcdn.net/hphotos-frc3/1374864_10101355430188909_1749526657_n.jpg)
Picture of said diagnosing and test-fire.
I always leave wiring out and test before I clean things up and put them away. This was learned from many mistakes of cleaning it up, putting it away, and then having to pull it all out to figure out why something does not work. I left all the wiring out for this project especially. Merging an LS1 98 harness with an OBD2 M3 harness is not simply plug and play. There are no instructions, it was all researched by me looking through wiring diagrams. Unfortunately it would have been much easier had I gone with OBD1, and a 99-2002 f-body wiring harness as those are well documented at this point.
Yesterday I had fixed the dead on arrival relay that was in part of my harness connecting power to the rest of the car. After I Fixed it though the car would not start. I was not getting power from the ECU, even though power was going to the ECU. The battery was very weak so I decided to charge it up overnight and check it out the next day.
I got home late last night and just wanted to see if I could quickly find out the wiring issue. So I hooked up the freshly charged battery, and clicked the keys into the on position. VROOOM!!!!! The sound is soooo noticeably different than an inline 6 I was actually caught by surprise. It definitely is weird to hear 5.7 V8 sounds out of this car.
Turns out the ECU just needed enough juice in it to send power to the fuel pump. She starts!
If I get some time tonight, I will be doing the learn procedure on the TPS and IAC, cleaning up the wiring, and hooking up the coolant hoses. Then I will do another test-fire before she gets buttoned up.
Picture of said diagnosing and test-fire.
2020 Ford Raptor
2009 Z06
1986.5 Porsche 928S
2009 Z06
1986.5 Porsche 928S