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  • Member
  • Member For: 12y 3m 9d
  • Gender: Male
  • Location: Australia
Posted (edited)
1 hour ago, El Andrew said:

BTW setting the number of O2 sesnors to zero didn't work  - car would crank but not start

 

Do not do that. Ford call it number of O2 sensors, but it is actually number of "banks". If you set it to 2 it will make the PCM think the car is a v8 and you'll screw up the firing order. Not sure what 0 would do!

Edited by rollex
  • Legacy Donating Member
  • Member For: 11y 4m 26d
  • Gender: Male
  • Location: Canberra ACT
Posted

It cranked but didn't start. Interestingly when you released from the start position it kept cranking! Turning back to accessories stopped it turning over.

Was in a multi level car park so was somewhat relieved when I reflashed and it started again!

  • Like 1
  • Legacy Donating Member
  • Member For: 11y 4m 26d
  • Gender: Male
  • Location: Canberra ACT
Posted

Well that was interesting. Have the car set to command 0.95 lambda everywhere (and took the boost out of the tune). Car holds 0.95 on throttle, but idles steadily at 0.85.

Makes me wonder if my low slope is off, but I'm using F6 injectors with factory data. Plus I had the issue on the factory injectors. I did have fuel pressure tested but now I feel like I want to get a gauge and see it for myself!

Idle was very smooth and no more stalling, but need to give it a few more drives to be sure. I think I've learner something about the issue, just not quite sure what to do with it yet!

  • Legacy Donating Member
  • Member For: 8y 4m 8d
Posted
23 minutes ago, El Andrew said:

I did have fuel pressure tested but now I feel like I want to get a gauge and see it for myself!

only way to know for sure.

 

what fuel pump and pressure reg are you using?

  • Member
  • Member For: 12y 3m 9d
  • Gender: Male
  • Location: Australia
Posted

What pump do you have? If you have as walbro 460 or bigger and dont change the return line or regulator return you will get high pressure at idle.

 

Check my post here Andrew, this will tell you immediately where your slope is wrong. In my case the car had slopes from the wrong injector inputted. I will finish the post soon showing how to fix it.

 

https://forum.pcmtec.com/topic/42-howto-injector-scaling-basics/?tab=comments#comment-2627

  • Legacy Donating Member
  • Member For: 11y 4m 26d
  • Gender: Male
  • Location: Canberra ACT
Posted

Thanks!

Pump is a Walbro 255lph and has a new genuine reg. Fuel return isn't modified but shouldn't need it I would t think.

  • Legacy Donating Member
  • Member For: 11y 4m 26d
  • Gender: Male
  • Location: Canberra ACT
Posted

Added about 6 lb/hr to the low slope and now idle commanded AFR and measured AFR line up. No stalling.

I'll turn closed loop back on and see if it behaves itself.

Super strange though that both the XR6 injectors and F6 injectors seemed to be out. On two different factory regs. On two different fuel pumps.

  • 5 weeks later...
  • Member
  • Member For: 12y 11m 18d
Posted

Howdy gang after some help I'm looking for bf factory wiring diagrams. I already have ba diagrams but from what I can find the pedal wiring doesnt quite match up and I think this is the cause of my throttle issues on my conversion. If anyone has a copy can you please hit me up via pm 👍

 

Im also looking for advice on what I need to change tune wise to disable the vct as im running the ecu on a SOHC any advice would be appreciated.

  • Member
  • Member For: 10y 11m 9d
  • Gender: Male
  • Location: Mildura
Posted

Send me a pm with your email address and I might be able to get you the wiring diagram tomorrow.

As for the vct, I'm pretty sure there is a setting to disable vct in hp tuners, but I don't have my tablet with me so I'll check later.

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