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Car stalling while driving with new turbo

miskyline94

By miskyline94,
in Engines & Forced Induction

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miskyline94 Enthusiast

miskyline94

Posted
Posted
Car stalling while driving with new turbo

hi all, 

i just replaced my turbo on my gtt from factory turbo to Garrett gt 30/76 internals on my factory housing. 

when i drive at a rpm over 3k and put it in neutral the revs will go all the way down till the engine stops.

does anyone have any idea why this could be ? 

thank you  

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

factory pipe work.. could be leak somewhere..

Are you running any wanky BOV? or is everything stock except the turbo?

Also it might be overboosting because the turbo has a larger actuator on it.. not ECU related.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
2 hours ago, miskyline94 said:

It's a factory bov but it is blocked of to re-curc and I have a front mount intercooler other than that its stock

there's your problem :)

admS15 Grand Master

admS15

Posted
Posted

The pressure is also going through the air flow meter backwards. The ecu sees this as additional air flow and injects more fuel. On some cars with air flow meters this causes stalling problems on others just rich running, unless the ecu has been tuned for it. Try unblocking and see what happens. Im sure dosepipe will correct me if im wrong :banana:

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miskyline94 Enthusiast

miskyline94

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Also i might add, 

the reason i changed the turbo is because the factory one shit itself but when it went out there was a bit of oil around the intake hoses, so i was wondering if some of that oil would have gotten on the AFM. 

should i remove it and clean it with contact cleaner? @admS15 @Dose Pipe Sutututu

miskyline94 Enthusiast

miskyline94

Posted
  • Author
Posted

ok so i there is nothing the bov is doing to the stalling, 

but we did rasie the idle a tad so the car has stopped stalling and also must of fixed the over boosting problem. 

a new ECU is defs on my list but money wise it is not going to happen very soon. 

and whats a nistune board? easy install and pricey? @GTSBoy 

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