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Having some trouble with my 1990 r32 gtst Sometimes when I drive it won't rev over 2000 rpm it revs to 2000 and then drops to 1500 and bounces between that at wide open throttle like a rev limiter if I take off in a higher gear then force it into lower gear n get the revs over 2000 rpm then it's fine to drive until it drops back under 2 grand, have tried a couple air flow meters and swapped ecu's any help is appreciated, thinking maybe TPS or cas

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try setting your fuel pump to full pressure all the time. i had a problematic dropping resistor in my stag that wasnt letting enough fuel through, hence the stalling when more air is introduced.

i think on 32's its the silver aluminium box thats bolted to the left hand strutt tower. try simply disconnecting the plug

Down in tassie. It doesnt stall when more air is introduced it cuts the revs like an ignition fault not fuel but I will try the fuel pressure thing. Have had a look at wiring e.g wiggle test and terminal tension when fault occurs, have tried known good afm, I think it's more sensor related, it happens after you drive it get it hot turn the car off for a while and then re-start it like a sensor getting hot and

Playing up

Down in tassie. It doesnt stall when more air is introduced it cuts the revs like an ignition fault not fuel but I will try the fuel pressure thing. Have had a look at wiring e.g wiggle test and terminal tension when fault occurs, have tried known good afm, I think it's more sensor related, it happens after you drive it get it hot turn the car off for a while and then re-start it like a sensor getting hot and

Playing up

  • 3 weeks later...

So it looks like the problem is after fitting a r33 turbo things are a bit hotter around the left hand side strut tower, this has caused the insulation to melt off the loom, I pulled the rest of the isolation and inspected all the wiring no faults, the problem is when the loom get really hot it gets a high resistance in the wiring I believe (getting very hot) so re insulated and relocated wiring loom and also applied some heat shield seems to be all good!

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