How To Test R33 Afms And Fuel Pumps?

[TUF250]

Hi folks, I have an issue with my R33 GTS-T that im chasing, basically I want to test the AFM and fuel pump for correct operation and correct voltages etc.

Can someone explain where you have to test them (which wires), what conditions and what I am expecting to see?

Any help would be great. Did a search but all I could find was GTR stuff and not sure if they are the same

Cheers

[Tyral]

I'm also curious about this!

[jeffworld2]

Fuel pump is easy. turn the car on and grab the hoses to the fuel rail. if you can feel the pulsing, then your pump is on, also listen for the injectors clicking.

If your car starts, and idles, thats a good sign. Disconnect the afm plug and if it changes, the afm was good lol. Plug it back in.

The easiest way to really check an afm is to borrow a power fc with hand control and see what voltages its spitting out

If you let us know specifically what you are chasing we may be able to help you out a bit better

[Basti]

any way to test either of these BEFORE they are installed? just to check they are not faulty

[ksx]

Is it possible to "clean" the AFM?