Iat Air Temp Causing Limp Mode On Rb26 Gtr Ecu

[flame_this]

My rb26 power fc is running on limp mode (cuts all fuel at 2.7 MAF volts/ wont hit boost)

wondering if the air temp sensor will cause this as its not plugged in/ dont have one. (running it on an rb25)

[STATUS]

have you paired the afm v inputs?

it should be workaraoundable unless its d-jetro.

fix ait though its important.

[The Mafia]

Definitely need an air temp sensor wired in

[wodanbrlam]

Hmmmm ... I'm going to have to think about that one

[flame_this]

have you paired the afm v inputs?

it should be workaraoundable unless its d-jetro.

fix ait though its important.

L- jetro.

i have paired afm v inputs, (tried 2 working afm's, not the problem)

paired o2 sensors.

i just installed the air temp sensor. still has fuel cut at 2.7v maf :-(

noticed the f/p fault code comes on when it hits the fuel cut.

does the 26 pfc regulate fuel pressure voltage? its in an r32 gtst so no FPCM

no matter what i do with the afm curve/ enrichment settings doesnt change the lean out.

Edited February 20, 2012 by flame_this

[flame_this]

forgot to mention. pluged a standard 33 ecu in and it worked fine. so everything mechanical works fine. the problems with the gtr ecu conversion

[SargeRX8]

Can you try the ecu in another car?

Edited February 20, 2012 by SargeRX8

[flame_this]

been looking for another 26 ecu to try but no1 seems to have one around my area

[flame_this]

Turns out the Gtr power fc/ ecu was cutting the fuel pump earth at 2.7v maf.

Thinking it was to do with the fpcm that gtr's and 33's have while r32 gtst's don't

[albie r33]

How did u fix this problem

[JonnoHR31]

Easiest way would be to earth the pump straight to the body.