1FZ-FE running rich! Plz help me haha (2 Viewers)

[petegangies]

If the fuel regulator was stuffed, you'd have fuel in the vacuum line. Check it a few times, sometimes mine did sometimes it didnt, but it was stuffed. So just check it a few times after a drive to see if there's any drops of fuel.

You may also want to check/test and adjust your throttle position sensor.

LPG systems usually splice into the o2 sensor, TPS, engine coolant temp sensor, injector signal wires etc. Check your wiring, if they removed the LPG tank, converter etc, did they also remove the LPG ecu and wiring? Just make sure all that's been done properly.

Definitely need to try and read your ecu for codes.

Tested your coil?

Reset ecu by pulling EFI fuse and negative terminal for 15mins?

Where abouts in Australia are you?

 

[Dindu Nuffin]

We have a plug like this in the USDM models and there's some pins in there you can jump to then count the flashes of the CEL to get codes. I don't know what pins you'd need to jump with your hundy, but that's where it happens.

 

[geddes33]

If the fuel regulator was stuffed, you'd have fuel in the vacuum line. Check it a few times, sometimes mine did sometimes it didnt, but it was stuffed. So just check it a few times after a drive to see if there's any drops of fuel.

You may also want to check/test and adjust your throttle position sensor.

LPG systems usually splice into the o2 sensor, TPS, engine coolant temp sensor, injector signal wires etc. Check your wiring, if they removed the LPG tank, converter etc, did they also remove the LPG ecu and wiring? Just make sure all that's been done properly.

Definitely need to try and read your ecu for codes.

Tested your coil?

Reset ecu by pulling EFI fuse and negative terminal for 15mins?

Where abouts in Australia are you?

Good point, that is my next avenue after talking to the sparky at work with an early EFI rover, looking into the loom and testing sensor resistances back at the ecu.

I’ll have a look at the TPS, I placed the reg under significant human vacuum haha and it didn’t leak on me. I am wondering if it could be stuck shut.

Haven’t tested coils yet. Drives fine just is rich and has a bit of an idle issue haha. Melbourne, well South-East.

On the code front, I have ordered a cord to use techstream, so I’m going to try that next week.

 

[geddes33]

We have a plug like this in the USDM models and there's some pins in there you can jump to then count the flashes of the CEL to get codes. I don't know what pins you'd need to jump with your hundy, but that's where it happens.

View attachment 3955912

Tried 15 times, doesn’t want to go into the mode.