I was doing the ecu reset from a YouTube video that happened to leave out the last step, which was once it’s in diagnostics mode you need to hold the accelerator pedal in for 10 more seconds to conduct a fuel pump relearn. The fuel pressure was just getting false readings cause it to run at bad ratio I assume. Below is an attached guide to conduct the full reset, this should fix your problem:
“To carry out the reset, carry out the following:
Turn the ignition on so all dash lights come on.
Wait 3 seconds.
PUMP the accelerator pedal 5 times within 5 seconds.
with the foot now OFF accelerator wait 7 seconds.
After 7 seconds, press and hold down the accelerator pedal for 10 seconds.
After 10 seconds, the Engine Management Light will start to flash, at this point, remove the foot from the accelerator.
The Nav is now in diagnose mode, so let the EML flash for a bit. Then press and hold the accelerator pedal down for more than 10 seconds., this will then reset ECU and fuel pump, etc., and put them into learning mode.”
