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i'd belooking for a raeson that has low boost i.e leak in the system ,split hose ,sensor problem.get obd codes read first then see if any are relevant to the turbo
turbo boost sensor located on the wastegate actuator make sure turbo boost wastegate actuator getting engine vacuum.if waste gate getting vacuum more like boost sensor failed.
In general the possible causes could be: - Boost pressure sensor harness is open or shorted - Boost pressure sensor circuit poor electrical connection - Faulty boost pressure sensor - Faulty Turbo/Super Charger - Engine over temperature. - Ignition misfire exceeds the calibrated threshold. - Faulty Knock sensor (KS)
I would doubt its the turbo as you said it seems to be working just fine (unless the wastegate is stuck open/wastegate seal is cracked). Also if the ignition misfire exceeds the claibrated threshold then I would think you'd hear that in the engine running normally. I would say locate the sensor and replace it?
Before we do anything else lets do a fuel pressure check to make sure the pump is a-ok as well as the fuel pressure regulator. Your gonna need shop manual for this as well as a fuel pressure tester. If all checks out then move to the Turbo code.
Turbo code looks like the waste gate is stuck open and your not building the boost. Do a visual inspection look for any signs of overheating and bearing wear. Check or change oil as needed.
With regards to the Mass air flow I believe you have to replace it. Keep in mind this thing might be the root of you whole problem.
I strongly suggest you use the shop manual for the codes you got. it will make this repair a snap.
If oil is coming out of your exhaust manifold you probably have bad piston rings. you can buy a compression tester at auto parts to verify the problem.
hi what was the code (p 0244)sounds like you need to replace the the turbo wastegate valve .sounds to me like its overboosting as if the charge from the turbo gets too hot the engine will misfire thus causing damage to engine ,the waste gate valve is there to prevent over pressurisation
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