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Hi guys first post here so here goes,
I have a 2004 4.8l petrol patrol here it's a nice rig and runs well until it doesn't. Can go 40 minutes or 5 minutes before hesitating and sputtering under throttle. So far airflow sensor changed, cleaned throttle body, changed fuel pump pressure and flow checks out ,38psi at idle and 43 under load. Earth have been cleaned, no codes stored on ecu. Disconnected one injector and reachable coils while.running and all make a difference. Passes power balance test, removed cat. It really feels electrical in nature like a signal playing up, at this stage in thinking throttle body or ecu. Has anyone come across this before?

Scott
 
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