constant boosting problem

MA70-3.0GT · 11-25-2009, 03:19 PM

Not sure about the constant boosting thing as the turbo shouldn't be getting enough exhaust gasses to make any boost at low revs, perhaps the sensor has gone haywire? Or if you mean it's overboosting & getting fuel cut then the wastegate could be stuck (or the actuator failed), probably stuck after sitting so long...

As for the rough running, have you got any fault codes when you do the diagnostic check? (making sure the light works beforehand)

11-25-2009, 03:19 PM	#2
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Not sure about the constant boosting thing as the turbo shouldn't be getting enough exhaust gasses to make any boost at low revs, perhaps the sensor has gone haywire? Or if you mean it's overboosting & getting fuel cut then the wastegate could be stuck (or the actuator failed), probably stuck after sitting so long... As for the rough running, have you got any fault codes when you do the diagnostic check? (making sure the light works beforehand) __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!